We'll continue to post these episodes here on RUclips. If you can wait for the rest of the build, visit our site to binge-watch: www.powernationtv.com/build/65/low-buck-iroc
I'm building in 07 Mustang 5.7 L Hemi in it I'm calling it f.o.r.d. what do you guys think the nice Dodge motor in it just to make my old man pissed he's a Ford man
I conic. I own a 1992 aniversrey Z28 that I bought new in 1992 and I still have it with only 16thousand miles.It is definitely not the fastest car in the world but style with T TOPS leather and for 92 they only built 5000 Z28.Only going to go up in value.
If they didn't lie & told you that they spent 60% of their $10k budget on the car, nobody would watch... Who can make a 30 y/o claped-out "musclecar" (with the headliner falling out and paint that hasn't been waxed since 9/11) look & drive well for $4000 ? Unless you DIY with all used parts, and don't factor in labor... And it would still be close to, if not over $4000.
@@teggsrb18c1 where are you from? I picked up my 90 Iroc-z for $1500 cash. All it needed was the ignition control module, and an alternator. I'd show pics if I knew how to post them.
A ragged out Z28 or RS not even an IROC seems to be around 3500 here in Kentucky, and most have been heavily molested, a rust free shell would be a sweet find.
@john jones True, the stock compression ratio is somewhere in the ballpark of 8.6:1 with their setup, they also used too high cfm heads for what the rest of the engine was, destroying low-end torque and over all horsepower due to decreased compression and air/fuel mixture velocity. Basically, this was a "what not to do" for performance or street drive-ability because this car would get both horrible mileage and terrible performance in a real world scenario, aka not at all what anyone wants.
A stock 305 in an IrocZ can make more than 300 hp ( at the key at least ) with just changing over to that Holley Carb 650 cfm with changing the intake, installing headers ( I had to use shortys since manual transmission was in the way of long tubes ), removing the catalytic converters, remove smog pump, and a flow master muffler ( I used an 80 series ). If the car is an automatic I’d get a moderate cam or something more aggressive than that factory cam ( this should be your most expensive job ). This here is what I did minus the cam since my 1988 came factory with it’s moderate cam because it’s a 5 spd car. Unless your 305 is having major issues like the one in the video, then changing it out for a 350 isn’t needed. Those TRICK FLOW heads and that nitrous kit aren’t needed neither. The carburetor with intake, longtube headers, cam, flowmaster, AND YOUR HEAVY FOOT is really all you need to get that near or better than 300 hp the tire. You will pocket a lot of that money!
I have never seen so much work and parts result in so little power... Full engine swap, aftermarket heads and cam Plus NOS and it didn't even crack 300 HP?!
Obviously, these people need to take a few lessons from Reeves Callaway. My ideal set up for a Third Generation Chevrolet Camaro/Pontiac Firebird/Trans Am would be to start with doing what he did to make the Callaway Sledgehammer and work up from there.
Mark My thoughts exactly those heads alone should have been good for 75HP however I don't think they gave the specs on the cam so I'm wondering how weak the cam they chose or what, I'm pretty sure my Modded 305 Truck motor in my SS monte on my channel here makes equivalent power to that Modestly built ground pounder they got , LOL
@@mwilliamshs The point is to grenade the stock engine for the fun of it. I would have ran premium fuel and tried to get around 11 degrees of base timing without the nitrous. I'm surprised they used a block with universal pistons in it.
@nallen100 then wireing. Custom oil pan cause the stock one will not fit. Custom motor mounts. Pcm cause the stock one will not work. Then u need a transmission that will even bolt onto a 6.0 (cheapest would be a 4l80e) . Then a fluid pan for the tranny cuse it wont fit right. New driveshaft to fit the new tranny. And re arranging the engine bay to make sure the 6.0 will drop in place. By the end of it. U will be spending way more money and time.
I graduated HS in 86 and my parents got me an IROC Z for my grad present. It was identical to this model except the paint job was midnight blue. T-tops, same wheels, same motor. Black leather interior and I put an Alpine stereo system. God I loved that car. It was so quick, so head turning. Maybe I will get another for my midlife crisis.
Hot damn that sounds nice. I bought a 305 z28 when i was 17, painted it army green, got the same wheels as the vid, and put in a holley tpi kit and put in stronger cams. She ain't an iroc, but she's the fastest 305 I've ever seen.
Figured out why the numbers were so disappointing. The cam they're running is tiny. The cam info they give in the video is for Trick Flow's 31402002 Hydraulic Roller Cam. Which is pretty aggressive and you can tell that's not what's in the car when you hear it idle and pull. They're running a flat tappet, likely the TFS-31401000. A mild flat tappet: - 212/214 @ 0.050" lift - 0.443"/0.449" Valve lift with 1.5 Rockers With such low lift, lazy lobes, and short duration teamed up with the stock IROC exhaust (stock y-pipe is the killer)... 230 whp and 276 ft-lbs is about what I'd expect through a high mileage 700R4. Roughly 270 hp and 330 ft-lbs at the crank. Sounds about right. The heads can't even be taken advantage of due to the low lift.
Your totally right that cam was not .555 lift, they don’t even sell a hyd flat tappet that big. Plus those pathetic factory dish pistons are the worst, 0 quench area!
Good point, it don't idle like it has 246/254 @.050, .555 lift cam. Idles smooth in the video. If it was really running the stated cam, it'd be a pretty radical idle.
No way there the cam specs with that compression , probably 8 to 1 sized heads wrong should have gone lower on the heads cc's. Horsepower should be over 300 without spray. The could have got a GM crate motor instead of trick flow kit!!
those 2 guys who bring back the big foot can make this project engine go over 400, and also the engine came with the car itself if im not mistaken is a four valve per cylinder V8 based on the pockets of the piston heads, why would they swap with big bore 2 valves??
TPI flattens the HP curve above 4500 RPMs... This build is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
This format is just like a rehashed saturday morning episode of TRUCKZ from 1994. Aluminum heads and on the squeeze it didn't make 300hp. I'm surprised this video got uploaded on the internet. LOL
Hell...20 years ago a stock 350 was pushing 335hp at the crank already...But today atleast we have the excuse of being able to find late 90s-mid 2000s Chevy 5.3s 5.7(350)s, 6.0s at any scrapyard in the US that produced 290hp-360hp at the crank
heads, intake and a cam they should have broke 300 .. then again this is wheel hp on a weakass automatic that probably needs new bands and clutch packs
They said nothing about the cam other than you should lube it. Didn't degree the cam. Didn't check the compression ratio. Made the car illegal from an emissions standpoint. I gotta believe the exhaust system is probably junk. A 4.8/5.3 will make more power for less invested in the engine itself, but what do all the swap parts cost?
Joshua Skinner It would likely cost less than the $3500 they spent on this. $1000 for a used 5.3/4L60 (the trans is a direct bolt in replacement for a 700r4) with harness, ecu, and accessories It already has a EFI tank/lines, so just swap the pump (under $300) If they wanted sponsor parts, could use Holley oil pan/engine mounts and Hooker manifolds (all for under $1000). They could have even splurged and used a Holley swap EFI harness/ecu ($1000-1200) and still been under the $3500 budget. If they used HP tuners and the stock harness/ECU, they would have had enough for a cam swap. Completely stock, a 5.3L makes 220+ to the wheels. My completely stock (tune only) 2000 4.8L Silverado made 220whp, and the pulls were done in 2nd gear, which reads lower than 3rd gear (1:1 ratio) that pulls are typically done in. Video on my channel for proof.
these fools didn't spend a single nickel. They just showed how to make power back in 1976, not modern day. Hell, I put SHIT parts on a stock bottom ended 6.0 and my extended cab S-10 was running 7.50's in the 1/8 on motor. stock 400 trans, 4500 converter, 4.30 gears, 28" slicks, 862 heads, 650 untuned carb, 575 lift E-1839-P Elgin cam, 1 3/4 long tubes, 485 pound driver.
What a blast from the past! I owned an '85 Yellow TPI 5.0 IROC-Z that eventually was stolen, and then replaced it with an '87.5 Yellow 5.7 TPI IROC-Z. The yellow used on both cars was actually different. I'm not sure when it changed but I suspect '85 and '86 yellow were the same, and '87 was different. My '87 had tan leather, Bose, and neither had T-tops. Good times!
Screwed up using rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Nice no rust body and wheels! Great platform for a sleeper build. Glad to see that your not going crazy and putting a five hundred horse engine in a chassis that not prepped for that kind of power. Awesome video guys
i dont know how you can spend that much money for so little of power gain they are probably trying to do some advertising for a big bunch of maneur parts that never sells because for that much money thats pathetic
@@jackstheman426 The base engine was in horrible shape. Running 2/3rds of the power it came with originally. They dropped the 500 bucks on a better block so they could start with a better base hp. Otherwise, theyd have to put all the effort into the block it came with in hopes of getting it higher, with no guarantees. They also didn't spend all of the 10k, I believe they still have over 3k considering they bought a block and paid for the other parts required for the block. What else would you do? use the crappy parts from an 86 engine, or new parts with better performance and durability? It would've cost a helluva lot more if they didn't do the labor themselves. That would've doubled the price, probably.
Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and 550 HP cam...
Builders were mud! Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Was excited until you ditched the tpi. The tpi is part of the coolness of thirgens. I know they limit hp to about 350 but they are torque monsters. You could have also ported the tpi and gone beyond the 350hp mark and way up into the 400s with torque. The power that 350 made was pretty sad.
A very good idea. The idea of muscle cars back in the day was that every working man could aspire to them. They are now completly out of touch and too precious. You take the idea back to the people. Nice one!
It isn't quite that simple. The turbo kit doesn't build itself. Rarely are they ever built correctly and normally any build like that (whether people like to admit it or not) they are always working on them. Many of the Ebay turbo's have a short life span although they are getting better. People seem to have in their mind lately that a turbo is the answer to every power situation and it simply isn't the case.
@@michaelking1869 nope , but you wanna be quick fer cheap it's your best bet. I myself would go with a 6.0 and a magnason backed with a t56 ...I don't like turbos , I know they are efficient blah blah blah. I work on cars and I see what turbos do to oil and then the engine, I'd rather have a positive displacement roots style super charger or a nasty N/A build.
Some of those IrocZ cars with the 305 actually made good power in their time. Some made between 215 - 230 horses with 300 - 330 pound feet of torque depending on what year and even what transmission. A 1988 IrocZ with the 5 spd WC actually came stock with a moderate cam that was a more aggressive bump stick than even the Corvette. You can actually do everything to that 305 that this guy did to that 350 with getting headers and an 80 series flow-master while removing those smog items that are LITERALLY CHOKING the car of it’s REAL POWER and you will beat his 350. True enough the 5.7L is more powerful but it wasn’t needed especially if you’re wanting to budget. An engine swap isn’t really that cheap and neither is the labor. Those 5.0L engines are stronger than you may think. So if you wanna save time, labor, money... I’m just sayin.
@John Johnson it is. The ls it theeeeeeeee easiest engine to remove, tear down and rebuild. It's also the easiest engine to swap into other cars. I could repiston a LS 5.3 ( from running to running) in about 7 hours( not rushing or killing myself). You need like four tools .
Good heads, bigger cam, higher compression., and you run it with stock log manifolds and factory single exhaust? Yeah, that's not killing 50hp+ right? Instead of spending money on aftermarket heads and roller rockers, should of ran Vortec heads and spent money on exhaust.
I remember pulling the stock y-pipe out of mine many years ago... it was something like 2" diameter and shaped like a T. Whoever designed that piece must've hated performance.
Problem was rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
See rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I had this exact car in early 90s with a fully built 5.7 and dual stage NOS 175. Stock 700R4 and gears, tuned ECM (I went thru 6 or 7), ported manifolds, throttle body, full custom exhaust. The car made about 480 at the crank. It ran consistent 12.20's. Yes I could have carbureted it, put a bigger NOS shot, done a gear and tranny swap but I liked it how it was.
I absolutely LOVE that "Ted Nugent - Strangle hold" kick in at 4:00 . Don't pretend like that isn't the song they were trying to duplicate lmao. They did a damn good job at it too.
they should've kept the 305, not everybody has a 350 laying around. the TPI intake was made for the 305. TPI on a 350 just makes it a good low rpm torque motor. cam, headers, more fuel pressure and tune, then you're making good power. the next weak link is the transmission.
Do these shows ever do anything different? Hot Rod garage built some cool shit, B is for Build is building a 1500hp LS Lambo and these guys are freshening up a 350 like they've done for the last 20 years.
I got smoked by one of these IROCS same color back in the day, he said he was stock except 410 gears, well my 400 GTO was no match for him. 20 years later this color was an instant reminder
In 1990 I swapped a 1986 Iroc z drive train, electric harness, gauges, console, Buckets and more into a 1981 Buick regal that was cherry. Match ported everything from throttle body to exhaust. custom 3" y-pipe to 1.75 duals. upgraded fuel pump, pressure regulator, injectors, throttle body and "chip" and fabricated my own " cold air intake" before that was a thing.... just to mention some of it. A mechanic friend of mine and myself completed the swap in 30 days.. I don't know how much hp or TQ it made, but it sure did move out! By the way i was 20 yrs old, no formal training and didn't have the Internet!!!! I read a lot of Hot rod mags and books from the library..
I like the iroc, at "3000" its a nice deal. But....so much plastic everywhere. Doors are super heavy man. A same year notch fox would be easier to work on, and even faster.
The Fox body is an economy car chassis which is why they're light. That light weight gives them better streight line performance at the same hp number to a point since they're much less aerodynamic but they're on economy car suspension which makes them less of an all round performer if you care about corners. Many people don't. And there's still a whole lot of plastic in them, no less than F bodies had.
Wrong! These actors are screw ups! Using rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
@@hanzgrueber145 - EFI can work slightly better but is vastly more expensive and complicated and not as reliable... The new engines are so ugly they have to hide them behind fake 'Hemi Look' plastic covers...
@@1flynlow the car had tuneport fuel injection. money would have been better spent tuning it then replacing everything, carb, distributor, intake, regulator
We were making fun of people for carb swapping these TPI cars in the 90s. You guys brought fudd back hardcore! Put that 305 back in on the juice, hog out the TPI intake and show how much torque those cars can make, then siamese the intake and see what you gain.
I would've thought that the increase in displacement alone along with a fresher block would've brought you up to that power number. Having HCI, cubes and only putting out 227 rwhp is horrible.
@@BuzzLOLOL why the hell they used 195 valves when doing the heads is beyond me and I was taught the old school way make sure your exhaust works with what you are building - - before you put more fuel into a motor make sure all the burnt stuff is gone from it or you loose volumetric efficiency. Those horse power numbers suck even with juice - - back in the 60s we were getting 300 to 350 out of a stock 327s of course that was on higher octane leaded gas and much higher comp ratios in the motors
@@garydoyle7155 - ??? ... heads have 2.02"/1.60" valves... they're 195cc intake ports volume... good to 450+ HP... those dished pistons prolly only giving about 8.5:1 compression ratio... way too low for that old NASCAR Racing grind cam size...
On further looking, rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I wish that one day you guys did an eBay build, the best parts on eBay made of the finest Chinesium. It would be a challenge and informative/fun to watch.
@@sicsam1 Well, they could make any less horsepower than they did this time. I've got a gen 6 BB Chevy in a 58 Chevy pickup that was built off eBay. 540 horses at the wheels and 16 inches of vacuum at idle. I have less money in it than they do the 350.
My parents owned one of these. It was black and gray and I drove it to junior prom. Great memories. Too bad someone stole it out of the driveway before I got to drive it again to senior prom.
@@tommymchone5403 it was 227 before they dialed the timing back 4 degrees for the nitrous setup. if the base 305 made 152hp of 190hp originally that's a roughly 20% power train loss which would translate to the last gen 350 tpi w/245hp, and 245 hp w/20% power train loss is right at 196hp at the wheels. 227hp at the wheels translates to 281hp at the crank, 281 or even 274 is a little more than the stock tpi. Now with the money spent to gain only what they did I would have rather them just swap in a junkyard ls truck motor 5.3/6.0 and have more right off the bat, but I don't think those motors will Mount to a 700r4 tranny, but I don't truly know.
@@brandonmccollum6349 Far as I know, GM has never changed their bell housing pattern, so the 5.3L and 6.0L should bolt up to the 700R4, but if you're gonna grab a newer ls, you might as well grab a 4L60 to put behind it. The 700R4 was good for daily driving to and from work on the highway, but they don't like too much horsepower and torque.
@@tommymchone5403 I here that, nice to know. Don't hate me but I'm a Ford guy so some gm detail for me is missing, but I can't help but give props where props are due!! Ls motors are probably the best all around efi engines around.
I had an old 5.0. So not surprising on the low power. And I am not a hater. I love these cars and how they look. I would take the easy road and do the LS conversion.
Loved it guys, those Camaros are Iconic. I think the commentors are not realizing that you are doing rwhp not at the crankshaft. Anyways keep up the good work if you read this.
We realize rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
True! ... Instead went rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
@@cdbennett2332 So fix the problem, cheaper than buying a used 350 and throwing a trick flow top end kit on it. Clean up stock pistons, hone it out with a dingleberry and put some new file fit rings, check that the valves are fully closing and it's sealed up.
I have to admit I always liked the Gen3 IIROC Z. Being more of a Ford man meant I had an enduring affiliation with Fox body Mustangs. However, I think the IROC Z is the best looking Camaro period. It also has an excellent chassis, better than a Fox body. The thing that let it down, was weight. The shitty heavy doors, now the Fox body was no Mercedes in that regard, but those doors at least closed with reasonable precision, and didn’t sag after 5 years. The other thing was the interior, not so much the seats or dash, but the cramped floor layout and crap headliner. Anywho, it still warms my heart when I see a clean Z with original wheels.
I’ve watched power nation for years I’m a big fan but this build is disappointing to say the least. That’s a sad little 350 and why ditch the efi for a carb? Just isn’t right.
I remember my grandad telling me about his days dirt racing back in the day, “Chevy might have made a lot of 350s, but not all 350s are made the same. No matter the love or money you put into it” I’m not sure if this applies here or not, I just know it should’ve broken 300 fairly quickly with those heads, cams, and intake let alone the NOS.
Trick flow heads,,, a 600 Holley,,,, a nitrous kit and a ton of other new go fast parts !!!! All for 3500 bucks!!!!!! What planet do you shop on???? Those heads alone cost more than that here on Earth!!!!
Even the new kia stinger makes more power then that... Hell even hondas come with that much power And they only have half the engine this p.o.s does lol
Yeah, cool build but with that budget you could've done more hp! Hell, you could've done a turbo blow thru carb at 6-8 psi!😆 Keep your channel rolling! Props!
Yeppers, rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I know that the 350 is the easiest to work on and buy parts for but i really want to see someone build a nice 305. a nice cam and some afr heads would make it come alive.
Thanks to 305 sprint cars there are enough really nice parts to make 500hp with them now. Dart even sells a 305 Little M block making a four didgit hp forced induction build possible.
I like the rebuild parts including the heads, intake, HEI, and so on. The 350 is down on power due to the dished pistons; the SBC has low compression. Swap those pistons out for some flat tops, use Fel-Pro 1094 gaskets and keep your compression. Nice work.
Of course, they used rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Smh i had a 355 with simple Edelbrock Performer RPM heads and 600 lift cam single plane on flat tops 3.73 gears 1 3/4 headers 4000 stall N/A and trap 11.90s in ss Monte. Just a simple bs build but that iroc is sad poor choice in cam and that carburetor belongs on a gokart lol.
True, problem is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
It’s an OBD1 EFI. Those are notoriously hard to tune, burning chips/proms and crossing your fingers that the tune is right. Carbs are easier to deal with than that setup. It’s not like the EFI on LS engines, where you plug your laptop in and boot up the HP tuners.
80's era Pony car, it almost sounded like a Mustang referral to me and all us Chevy guys out there know that those Mustangs can't keep up with us.. Chevy #1 always...
They screwed up this build! Used rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
150bhp from a 4.9 litre engine.. wow.. that's.. gutless. We've got 2.0 (122ci) engines from the same era that make the same! - Case in point C20XE GM 4 pot.
305 is 5.0 liters. That Vauxhall/Opel engine may have made 150hp, in 1988 when the IROC had 220hp, but the IROC had 290lb/ft torque, whereas the Vauxhall/Opel had maybe what, 135-140? It would have been worthless for a car the size and weight of the IROC. However, I'm sure it was perfect for a 1900lb Euro tin can.
@@TheKiltedYaksman1 nothing wrong with a lightweight vehicle. Automotive design has been chasing lightness in there performace vehicles for decades now. Even the C1 Corvette was fibreglass and have been some kind of composite or plastic ever since.
@@trillrifaxegrindor4411 How? Where did find this information? Theres a 1000lb difference between the 2 cars. The 1988 vauxhall astra gte does a 1/4 mile in 15.7 the iroc camaro does a 15. Eating? Barely, in fact any human with any sense of shame would be pretty embarrassed a front wheel drive grocery getter is in the same et bracket. That 302 is a CAFE regulated, low compression clump of shit. Its not a Hemi, its not a Ford Boss, its not a 454 ls6. Its and old library bus motor.
A 555 lift cam with a stock convertor that couldn't even stall at 2000 rpm on a good day! That oughta idle good, be a pleasure to drive around town, and have a blistering 3 second 60 foot time at the track...
@@stlchucko - Smooth idle is from no compression... Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
@@BuzzLOLOL Even if it's as you stated ("Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance"), the valve reliefs would have to 30cc to get 7.5:1 compression. Most pistons like that with 4 valve reliefs are anywhere from 5-15cc, so even on the large 15cc size, that'd make the compression 8.5:1. Plus, if it were bored 0.030", that'd add another 0.1 to compression. PLUS... Even if the compression is 7.5:1, that wouldn't make a cam that's 246/254@0.050", 0.555" lift, and a 112 LSA sound as mild as it does. I have a much smaller cam in a 454 (210@0.050", 0.500" lift, 110 LSA) and it has more lope than this small block. PLUS PLUS... The Dyno (17:20) showed that HP peaked at 5k rpm. There's no way a cam with 246 degrees @ 0.050" would peak there in a 350 cid engine, especially with decent heads; regardless if it had 7.5:1 compression. With those heads, it should have easily made peak HP at 6k rpm. Even a 224@0.050" cam with stock Vortec heads will make peak HP around 5500 (much smaller cam and heads that flow 20-30 cfm less). ALSO... Those TF heads flow 253cfm @ 0.500". That's enough to support over 500hp NA. Even stock L31 Vortec heads (upwards of 230cfm) flow enough to support 475hp NA. So I don't know where you're getting "the 475 HP heads", let alone the "550 HP cam" nonsense.
@@stlchucko - Take a closer look at those horrible pistons at 07:18 !!! Huge champfer around the outside corner/edge... #1 sitting way down in bore... Large dish of at least 22cc... Plus 4 valve eyebows in the bottom of the dish... Plugging the numbers into Summit's Compression Calaulator give 7.2:1 !!! Not much more compression than a campfire... LOL !!! Throw all power expectations out the window with such a soggy running engine... It's why a 1978 L82 Corvette 350" engine with L46 224/224 cam was rated 180 HP... We grab 195cc heads when building a 475 HP engine... We grab 244/254 cam when going for 550 HP... We don't build with 7.2:1 compression ratio... ( I realize inexperienced people look at pistons like that and call them "flat tops"... ) www.crankshaftcoalition.com/wiki/Quench
Actual problem is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the expensive 475 HP heads and way too big 550 HP cam...
pretty easy to build for $10k if you have a solid rust free car to start with. Ive built a dozen or so back in the 90s for around $10k-15k. but using a LS block and making close to or over 500HP. T Tops are sweet, if they dont leak every time it rains. At least you can get parts and seals cheaper today.
The 5.7 liter IROC-Z is the cream of the crop but a lot of people didn’t like the fact that it was only available with the automatic transmission. The 220-240 horsepower 5.7 liter was the most powerful engine you could get in a 3rd gen Camaro but was easily upgraded to put out more power. Prices are going up on 3rd gen Camaros as well as Fox Body Mustangs.
We'll continue to post these episodes here on RUclips. If you can wait for the rest of the build, visit our site to binge-watch: www.powernationtv.com/build/65/low-buck-iroc
Hello
I'm building in 07 Mustang 5.7 L Hemi in it I'm calling it f.o.r.d. what do you guys think the nice Dodge motor in it just to make my old man pissed he's a Ford man
I conic. I own a 1992 aniversrey Z28 that I bought new in 1992 and I still have it with only 16thousand miles.It is definitely not the fastest car in the world but style with T TOPS leather and for 92 they only built 5000 Z28.Only going to go up in value.
I want to know how you could bolt on aftermarket aluminum heads, cam, and intake on a 350 Chevy and only make 250 HP. That takes talent.
PowerNation zDSSWBVCBNJKKLOP01
$3k for that IROC in that condition? I’m calling bs. Only in magic tv land.
Brandon Clark First thing I thought of as well. A running/driver IROC would go for at least 5K where I’m from
If they didn't lie & told you that they spent 60% of their $10k budget on the car, nobody would watch...
Who can make a 30 y/o claped-out "musclecar" (with the headliner falling out and paint that hasn't been waxed since 9/11) look & drive well for $4000 ?
Unless you DIY with all used parts, and don't factor in labor... And it would still be close to, if not over $4000.
The puke yellow paint doesn’t exactly help the cars value.
@@teggsrb18c1 where are you from? I picked up my 90 Iroc-z for $1500 cash. All it needed was the ignition control module, and an alternator. I'd show pics if I knew how to post them.
A ragged out Z28 or RS not even an IROC seems to be around 3500 here in Kentucky, and most have been heavily molested, a rust free shell would be a sweet find.
The stock 305 could have made 300 on the bottle and saved the time and money..This makes Trick Flow look pretty bad.
Tyler Avery true
@john jones True, the stock compression ratio is somewhere in the ballpark of 8.6:1 with their setup, they also used too high cfm heads for what the rest of the engine was, destroying low-end torque and over all horsepower due to decreased compression and air/fuel mixture velocity. Basically, this was a "what not to do" for performance or street drive-ability because this car would get both horrible mileage and terrible performance in a real world scenario, aka not at all what anyone wants.
A stock 305 in an IrocZ can make more than 300 hp ( at the key at least ) with just changing over to that Holley Carb 650 cfm with changing the intake, installing headers ( I had to use shortys since manual transmission was in the way of long tubes ), removing the catalytic converters, remove smog pump, and a flow master muffler ( I used an 80 series ). If the car is an automatic I’d get a moderate cam or something more aggressive than that factory cam ( this should be your most expensive job ). This here is what I did minus the cam since my 1988 came factory with it’s moderate cam because it’s a 5 spd car. Unless your 305 is having major issues like the one in the video, then changing it out for a 350 isn’t needed. Those TRICK FLOW heads and that nitrous kit aren’t needed neither. The carburetor with intake, longtube headers, cam, flowmaster, AND YOUR HEAVY FOOT is really all you need to get that near or better than 300 hp the tire. You will pocket a lot of that money!
Agreed,Rookies!!
305 can do more without nitrous oxide or forced induction
I have never seen so much work and parts result in so little power...
Full engine swap, aftermarket heads and cam Plus NOS and it didn't even crack 300 HP?!
Obviously, these people need to take a few lessons from Reeves Callaway. My ideal set up for a Third Generation Chevrolet Camaro/Pontiac Firebird/Trans Am would be to start with doing what he did to make the Callaway Sledgehammer and work up from there.
Drivetrain exhaust and tune needed....
Explains why that little 5 liter Ford consistently curb stomped those things.
@@rreno496 before those stangs started enjoying jumping curbs
@@jennifurzoe1302 Weak, just like that 200 horse 350. LMAO
Nice. I have a 87 I've been wanting to tinker with. Now I know what NOT to do ! Lol
Id be pissed to make that much power with those parts
The Squirrel Chronicles aka Rescue's put naws on it
i have one,i could never have a car like this and play with squirrels while it rots,fuck that.get busy and leave the bushy tailed rats alone.
@@trillrifaxegrindor4411 ... What you not a new subscriber ? Lol
I don't even think those guys tuned the carb.
220rwhp out of a 350 with trick flow top end kit? ...something's wrong with that motor.
...lol...😝
That's the same thing I was thinking.
That's what stock TPI 350 Vettes put down. Something is way off on this build for sure or the drivetrain has used bubble gum instead of oil in it.
Mark My thoughts exactly those heads alone should have been good for 75HP however I don't think they gave the specs on the cam so I'm wondering how weak the cam they chose or what, I'm pretty sure my Modded 305 Truck motor in my SS monte on my channel here makes equivalent power to that Modestly built ground pounder they got , LOL
305, it's not a 350. That was alot to do with it
@@Elver_Galarga_jugo No sir, they picked up a used 350 for the replacement, that thing is a boat anchor.
Should have just put nitrous on the stock engine and saved alot of money.
The engine that was already down on compression in a few cylinders? Not a good idea.
@@mwilliamshs The point is to grenade the stock engine for the fun of it. I would have ran premium fuel and tried to get around 11 degrees of base timing without the nitrous. I'm surprised they used a block with universal pistons in it.
I think the ACTUAL point is to have something that survives the episode
@John Johnson The stock fuel pump is fine. This wasn't the puny TBI pump.
I bet that things got around 5:1 compression
More like 1:1, that’s WEAK
@@johanneswarn5488 1:1 would equal 0
C'mon... maybe 6:1 :-)
😂😂
hahaa
For the money spent and stuff that got swapped, I'd rather do a junkyard 6.0 and carb it.
exactly.
would gain more hp over all just by swapping to a 6.0 lol. file the ring gaps a lil and power add it.
Where are the 364 cubic inch lq4 lq9 motor is a great motor. in some places like where I live people on $1,000 just for that motor.
Might as well keep the ls efi. That toilet bowl will cost more than a complete junkyard motor
@nallen100 then wireing. Custom oil pan cause the stock one will not fit. Custom motor mounts. Pcm cause the stock one will not work. Then u need a transmission that will even bolt onto a 6.0 (cheapest would be a 4l80e) . Then a fluid pan for the tranny cuse it wont fit right. New driveshaft to fit the new tranny. And re arranging the engine bay to make sure the 6.0 will drop in place. By the end of it. U will be spending way more money and time.
I gained a 135 hp in my LS with just a head and cam swap. This is unethical.
lol
@Christopher Ochoa from 325 to 460. Shit bag
Always that one dude
nigga said unethical☠️
wish they went LS as well it’s pointless any other way.
That car is pretty darn clean. I'd have paid $3000 for that thing any day of the week and twice on Sunday!
Haha I paid 300 bucks for a 1986 z28 at the copart auction in 2016 it’s possible it had a 305 that ran once I threw a carb on it
I graduated HS in 86 and my parents got me an IROC Z for my grad present. It was identical to this model except the paint job was midnight blue. T-tops, same wheels, same motor. Black leather interior and I put an Alpine stereo system. God I loved that car. It was so quick, so head turning. Maybe I will get another for my midlife crisis.
Hot damn that sounds nice. I bought a 305 z28 when i was 17, painted it army green, got the same wheels as the vid, and put in a holley tpi kit and put in stronger cams. She ain't an iroc, but she's the fastest 305 I've ever seen.
Highly recommended
Midnight blue? I don’t remember them coming in that color.
@@Helmuesi911 I called it midnight blue, I don't know what the official GM color was called. But it was beautiful.
Hek yeah
Figured out why the numbers were so disappointing.
The cam they're running is tiny. The cam info they give in the video is for Trick Flow's 31402002 Hydraulic Roller Cam. Which is pretty aggressive and you can tell that's not what's in the car when you hear it idle and pull.
They're running a flat tappet, likely the TFS-31401000.
A mild flat tappet:
- 212/214 @ 0.050" lift
- 0.443"/0.449" Valve lift with 1.5 Rockers
With such low lift, lazy lobes, and short duration teamed up with the stock IROC exhaust (stock y-pipe is the killer)... 230 whp and 276 ft-lbs is about what I'd expect through a high mileage 700R4.
Roughly 270 hp and 330 ft-lbs at the crank. Sounds about right.
The heads can't even be taken advantage of due to the low lift.
don't forget the 4 eyebrow pistons. probably only 9:1 compression. I guessed 300whp and was disappointed.
Cam specs were 246@.050, 555 lift.....that's not a small cam at all.hydraulic flat tappet....
Your totally right that cam was not .555 lift, they don’t even sell a hyd flat tappet that big. Plus those pathetic factory dish pistons are the worst, 0 quench area!
Good point, it don't idle like it has 246/254 @.050, .555 lift cam. Idles smooth in the video. If it was really running the stated cam, it'd be a pretty radical idle.
No way there the cam specs with that compression , probably 8 to 1 sized heads wrong should have gone lower on the heads cc's. Horsepower should be over 300 without spray. The could have got a GM crate motor instead of trick flow kit!!
Disappointed you all didn't use the TPI...
Me too they could've made so much more power with a 350 with heads and cam with a dyno-tuned tpi system.
Agree.
Isn't the 350 tpi a 235 hp and 290 torque motor ?
@@Knightmare-gz9ls stock yeah, but had these guys still have done the heads, cam, intake and kept efi they'd make more power.
So buy a 5.7 tpi car and add a nitrous kit , bam same power lol
What did I just watch? With those heads and cam, it should have been around 400hp.
OCofthe3 I thought the same thing!!! What the?
wrong mechanics to watch maybe???
Already watched all my Roadkill episodes and Dirt Everyday. Was hoping for more I guess ha ha ha!!!
Maybe if they all talk like the voiceover guy it makes 750hp.
those 2 guys who bring back the big foot can make this project engine go over 400, and also the engine came with the car itself if im not mistaken is a four valve per cylinder V8 based on the pockets of the piston heads, why would they swap with big bore 2 valves??
What's one of the most iconic things about an IROC? TPI! Why the hell did you remove it!
IROCs could have also been equipped with LG4s and L69s in 1985-1986, as well as the L03 starting in 1988.
TPI flattens the HP curve above 4500 RPMs...
This build is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
This format is just like a rehashed saturday morning episode of TRUCKZ from 1994. Aluminum heads and on the squeeze it didn't make 300hp. I'm surprised this video got uploaded on the internet. LOL
This is like a horsepower tv episode that wouldve aired 20 years ago.
Yep felt like it
Except they would have got closer to 400 HP out of a 350 Chevy with heads, cam, and intake.
04Interc3ptorP71 facts.
195cc heads and decent cam with 5k rpm pulls on a 600cfm carb what do you expect? I'm sure more cfm with a 6k+ pull would look a lot better.
Hell...20 years ago a stock 350 was pushing 335hp at the crank already...But today atleast we have the excuse of being able to find late 90s-mid 2000s Chevy 5.3s 5.7(350)s, 6.0s at any scrapyard in the US that produced 290hp-360hp at the crank
Heads, cam, intake, ignition and nitrous and still didnt break 300hp, that's weak guys. Makin chevy look weak. 🤦♂️
heads, intake and a cam they should have broke 300 .. then again this is wheel hp on a weakass automatic that probably needs new bands and clutch packs
could have miss timed the cam
@@luketeverino6085
Was thinking the same. I wonder why they didn't install the cam dot-to-dot?
@@of_lion22 they did
They're Dodge and Ford fan boys.
That was lame, especially for what they spent on heads/cam/intake. A stock 4.8ls would have done better and cost less.
Or a LS1
They said nothing about the cam other than you should lube it. Didn't degree the cam. Didn't check the compression ratio. Made the car illegal from an emissions standpoint. I gotta believe the exhaust system is probably junk. A 4.8/5.3 will make more power for less invested in the engine itself, but what do all the swap parts cost?
Joshua Skinner
It would likely cost less than the $3500 they spent on this.
$1000 for a used 5.3/4L60 (the trans is a direct bolt in replacement for a 700r4) with harness, ecu, and accessories
It already has a EFI tank/lines, so just swap the pump (under $300)
If they wanted sponsor parts, could use Holley oil pan/engine mounts and Hooker manifolds (all for under $1000). They could have even splurged and used a Holley swap EFI harness/ecu ($1000-1200) and still been under the $3500 budget. If they used HP tuners and the stock harness/ECU, they would have had enough for a cam swap.
Completely stock, a 5.3L makes 220+ to the wheels. My completely stock (tune only) 2000 4.8L Silverado made 220whp, and the pulls were done in 2nd gear, which reads lower than 3rd gear (1:1 ratio) that pulls are typically done in. Video on my channel for proof.
They could have swapped in a bone stock 5.3 LSx out of a junkyard and made more power lol.
Is it just me or dont you hate when they turn an efi car to a carb.
Dan d carb is better
I 100 percent agree
TPI EFI makes no power above 4500 RPMs... hate low RPMS cars...
230 Horsepower for all that work.. New short block, Trick flow heads, and new cam?? So much wasted money.
these fools didn't spend a single nickel. They just showed how to make power back in 1976, not modern day.
Hell, I put SHIT parts on a stock bottom ended 6.0 and my extended cab S-10 was running 7.50's in the 1/8 on motor. stock 400 trans, 4500 converter, 4.30 gears, 28" slicks, 862 heads, 650 untuned carb, 575 lift E-1839-P Elgin cam, 1 3/4 long tubes, 485 pound driver.
86 you mean and trick flow heads are pretty current
Should have took the block 30 over with the money for real power
At that power level I'm feeling like my crown Vic is a speed demon 😂🤣 😂
@Corey Theisen stock 5.3 without a tune and 4l60e makes 225whp so I agree
What a blast from the past! I owned an '85 Yellow TPI 5.0 IROC-Z that eventually was stolen, and then replaced it with an '87.5 Yellow 5.7 TPI IROC-Z. The yellow used on both cars was actually different. I'm not sure when it changed but I suspect '85 and '86 yellow were the same, and '87 was different. My '87 had tan leather, Bose, and neither had T-tops. Good times!
Insurance was exceptionally high on irocs and corvettes in the 80s because of the high risk of theft on those cars.
Yes it was! :( @@Helmuesi911
Damn my wife’s Kia has more hp then that build that’s sad...
*than
Sean Roche my bad! THE SPELL CHECK POLICE IS IN THE HOUSE!!!! My z06 has more power then your vocabulary check doeee!! 😂😂😂
Your kia is more reliable too LOL
@Milhaus Not to the tires
555 lift cam and no stall converter or gear change....that should work really good.......not
The converter has nothing to do with it on a dyno.
@@Thirdgen83 - It does until get above 3500 RPMs where that cam starts making power
Good job guys now that car makes same horse power as 2010 Camaro V6.. ..
Lmao
Screwed up using rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Nice no rust body and wheels! Great platform for a sleeper build. Glad to see that your not going crazy and putting a five hundred horse engine in a chassis that not prepped for that kind of power. Awesome video guys
The Iroc RULES! Their planning was a complete FAIL! Budget or no budget.
i dont know how you can spend that much money for so little of power gain they are probably trying to do some advertising for a big bunch of maneur parts that never sells because for that much money thats pathetic
@@jackstheman426 The base engine was in horrible shape. Running 2/3rds of the power it came with originally. They dropped the 500 bucks on a better block so they could start with a better base hp. Otherwise, theyd have to put all the effort into the block it came with in hopes of getting it higher, with no guarantees. They also didn't spend all of the 10k, I believe they still have over 3k considering they bought a block and paid for the other parts required for the block. What else would you do? use the crappy parts from an 86 engine, or new parts with better performance and durability? It would've cost a helluva lot more if they didn't do the labor themselves. That would've doubled the price, probably.
Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and 550 HP cam...
My wife had a 1986 Trans-Am when I met her in 87. We got a 85 in about 1990. Loved that car. Miss it.
Quick! Please someone notify the sponsors to pull off this vid... their names get drag in the mud here
Why? I didnt hear any of that?
Builders were mud! Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
HOLY CRAP!!! Was obsessed with this car for years and NEVER found one in this good of shape for less than 8K.
I think they lied on that purchase price of $3000...
Was excited until you ditched the tpi. The tpi is part of the coolness of thirgens. I know they limit hp to about 350 but they are torque monsters. You could have also ported the tpi and gone beyond the 350hp mark and way up into the 400s with torque. The power that 350 made was pretty sad.
Going backwards from fuel injection, to a carburetor.
with the $ they spent i could have made like 500 hp np. wtf?
A very good idea. The idea of muscle cars back in the day was that every working man could aspire to them. They are now completly out of touch and too precious. You take the idea back to the people. Nice one!
Wanna make a iroc fast?
Step one....install LS.
Step two...eBay turbo
Step three...drive it.
It isn't quite that simple. The turbo kit doesn't build itself. Rarely are they ever built correctly and normally any build like that (whether people like to admit it or not) they are always working on them. Many of the Ebay turbo's have a short life span although they are getting better. People seem to have in their mind lately that a turbo is the answer to every power situation and it simply isn't the case.
@@michaelking1869 nope , but you wanna be quick fer cheap it's your best bet. I myself would go with a 6.0 and a magnason backed with a t56 ...I don't like turbos , I know they are efficient blah blah blah. I work on cars and I see what turbos do to oil and then the engine, I'd rather have a positive displacement roots style super charger or a nasty N/A build.
Some of those IrocZ cars with the 305 actually made good power in their time. Some made between 215 - 230 horses with 300 - 330 pound feet of torque depending on what year and even what transmission. A 1988 IrocZ with the 5 spd WC actually came stock with a moderate cam that was a more aggressive bump stick than even the Corvette. You can actually do everything to that 305 that this guy did to that 350 with getting headers and an 80 series flow-master while removing those smog items that are LITERALLY CHOKING the car of it’s REAL POWER and you will beat his 350. True enough the 5.7L is more powerful but it wasn’t needed especially if you’re wanting to budget. An engine swap isn’t really that cheap and neither is the labor. Those 5.0L engines are stronger than you may think. So if you wanna save time, labor, money... I’m just sayin.
@John Johnson it is. The ls it theeeeeeeee easiest engine to remove, tear down and rebuild. It's also the easiest engine to swap into other cars. I could repiston a LS 5.3 ( from running to running) in about 7 hours( not rushing or killing myself). You need like four tools .
@@pmprei3767 I'd rather have the 305/5spd over the 350/auto anyday
Good heads, bigger cam, higher compression., and you run it with stock log manifolds and factory single exhaust? Yeah, that's not killing 50hp+ right? Instead of spending money on aftermarket heads and roller rockers, should of ran Vortec heads and spent money on exhaust.
It had headers....but the rest of exhaust was prolly shit.. Something def aint right, should make atleast 350 rwhp on motor alone. fuckin pathetic
I remember pulling the stock y-pipe out of mine many years ago... it was something like 2" diameter and shaped like a T. Whoever designed that piece must've hated performance.
Problem was rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
And them mangled intake runners!
And it still would have been better than the carb setup they went with, lol.
@@DerrickRG yes sir!!
My v6 Camaro would smoke that car in the 1/4 lmao
Set of heads, intake, carb,350 ci and a 100HP shot....still doesnt crack 300 HP
Lol
I've noticed it didn't say anything about the exhaust system. Crushed bent with the stock cat it's not helping with flow
dont forget the cam
See rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Was excited watching this until they threw a carb on there.
could at least used a fitech EFI or similar
Blower?
These types of shows almost always just go carb swap because its easier. Never fun to see it though.
@@Dartht33bagger Yeah they really do it way too often.
TPI blocks HP above 4500 RPMs... simply adding a carb. gives 50 more HP and 1,000 more RPMs...
Not a Chevy fan but I have always had a soft spot for the 80's Camaro...
These guys are always down on power😂
I had this exact car in early 90s with a fully built 5.7 and dual stage NOS 175. Stock 700R4 and gears, tuned ECM (I went thru 6 or 7), ported manifolds, throttle body, full custom exhaust. The car made about 480 at the crank. It ran consistent 12.20's. Yes I could have carbureted it, put a bigger NOS shot, done a gear and tranny swap but I liked it how it was.
A fully built 5.7 as opposed to a partially built where they leave out a rod and piston or maybe a couple of lifters?
BTW 13.9:1 AFR is not conservative. Should be closer to 12.5-13.0
Not bad hp baseline. I always like the 5.0 TPI setup. I think they were really underrated and had untapped potential.
I absolutely LOVE that "Ted Nugent - Strangle hold" kick in at 4:00 . Don't pretend like that isn't the song they were trying to duplicate lmao. They did a damn good job at it too.
they should've kept the 305, not everybody has a 350 laying around. the TPI intake was made for the 305. TPI on a 350 just makes it a good low rpm torque motor. cam, headers, more fuel pressure and tune, then you're making good power. the next weak link is the transmission.
Do these shows ever do anything different? Hot Rod garage built some cool shit, B is for Build is building a 1500hp LS Lambo and these guys are freshening up a 350 like they've done for the last 20 years.
At least they didn't paint it orange.
Check out vice grip garage. That's a good channel right there. Almost like roadkill.
99.9999% of people don't have a Lambo lying around...
So glad these episodes are on RUclips.
Little disappointing the fuel injection was removed. Would love to see a build where the TPi was kept
I got smoked by one of these IROCS same color back in the day, he said he was stock except 410 gears, well my 400 GTO was no match for him. 20 years later this color was an instant reminder
They lacked in HP numbers, but if you had a TPI back in the day you were a stoplight to stoplight champion for sure.
One of the best looking Camaros ever!!
PhillLsx Ga. Yes sir
@@_baller I don't know what in the heck happened to the Camaro!! Sad...
The 1st gen is the best.
basshead eh
I drove a new Iroc in 87 & same day drove teh 5.0 87 mustang , & That Iroc felt every bit as strong as the mustang but with better ride & feel imo
Wow , to bad you guy's don't know how to build an engine , Nitro is CS
EFI when you know how to use and tune it ,Go play with go kart's
In 1990 I swapped a 1986 Iroc z drive train, electric harness, gauges, console, Buckets and more into a 1981 Buick regal that was cherry. Match ported everything from throttle body to exhaust. custom 3" y-pipe to 1.75 duals. upgraded fuel pump, pressure regulator, injectors, throttle body and "chip" and fabricated my own " cold air intake" before that was a thing.... just to mention some of it. A mechanic friend of mine and myself completed the swap in 30 days.. I don't know how much hp or TQ it made, but it sure did move out! By the way i was 20 yrs old, no formal training and didn't have the Internet!!!! I read a lot of Hot rod mags and books from the library..
I like the iroc, at "3000" its a nice deal. But....so much plastic everywhere. Doors are super heavy man. A same year notch fox would be easier to work on, and even faster.
not even. mustangs arent fast.
@@stormwickham1675 These dudes make everything slower. It was a comparison in weight and similar aftermarket support.
The Fox body is an economy car chassis which is why they're light. That light weight gives them better streight line performance at the same hp number to a point since they're much less aerodynamic but they're on economy car suspension which makes them less of an all round performer if you care about corners. Many people don't. And there's still a whole lot of plastic in them, no less than F bodies had.
@@RSChris666 would the gay f body be the berlinetta?
These guys are pros and all you RUclips mechanics coming out of the woodwork let's see y'all build a engine and do this good of a job doing it
Wrong! These actors are screw ups! Using rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I cannot imagine removing a Tune Port Injection system, and putting on a CARBURETOR.
We can if you want some HP and RPMs... Tunnel Port Injection would have been better...
@@BuzzLOLOL carbs have ultimate throttle response and look amazing
@@hanzgrueber145 - EFI can work slightly better but is vastly more expensive and complicated and not as reliable...
The new engines are so ugly they have to hide them behind fake 'Hemi Look' plastic covers...
I like your pfp
She's beautiful and even more rare than you might have realized because of the color. Just leave it be! Perfection needs no assistance.
Liked the build, but still wrapping my head around nos with carb vs nos with fuel injection
I know but with all the modern fuel injection why???
this is a budget build. fuel injection is pricey to add to an old vehicle.
@@1flynlow $1000 For a sniper efi they spent half that on a carb and regulator
@@1flynlow the car had tuneport fuel injection. money would have been better spent tuning it then replacing everything, carb, distributor, intake, regulator
but the tpi doesn't flow much at all over 4500rpm and would still put down disappointing hp numbers.
We were making fun of people for carb swapping these TPI cars in the 90s. You guys brought fudd back hardcore! Put that 305 back in on the juice, hog out the TPI intake and show how much torque those cars can make, then siamese the intake and see what you gain.
I would've thought that the increase in displacement alone along with a fresher block would've brought you up to that power number. Having HCI, cubes and only putting out 227 rwhp is horrible.
Yeah, 450 HP heads plus a 550 HP cam should have done better...
@@BuzzLOLOL why the hell they used 195 valves when doing the heads is beyond me and I was taught the old school way make sure your exhaust works with what you are building - - before you put more fuel into a motor make sure all the burnt stuff is gone from it or you loose volumetric efficiency. Those horse power numbers suck even with juice - - back in the 60s we were getting 300 to 350 out of a stock 327s of course that was on higher octane leaded gas and much higher comp ratios in the motors
@@garydoyle7155 - ??? ... heads have 2.02"/1.60" valves... they're 195cc intake ports volume... good to 450+ HP... those dished pistons prolly only giving about 8.5:1 compression ratio... way too low for that old NASCAR Racing grind cam size...
On further looking, rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I wish that one day you guys did an eBay build, the best parts on eBay made of the finest Chinesium.
It would be a challenge and informative/fun to watch.
They have too many sponsors to do that and if they did, they'd used the most expensive stuff they could find
@@sicsam1 Well, they could make any less horsepower than they did this time.
I've got a gen 6 BB Chevy in a 58 Chevy pickup that was built off eBay. 540 horses at the wheels and 16 inches of vacuum at idle. I have less money in it than they do the 350.
@@johnparrish9215 It's like they dont even try. They could had mad a easy 350 hp if they wanted but didnt for whtever reason
I remember the IROC stock engines pulling more HP than this budget build..
Well... no...
My parents owned one of these. It was black and gray and I drove it to junior prom. Great memories. Too bad someone stole it out of the driveway before I got to drive it again to senior prom.
All of that time and money, and it still makes less hp than the factory 5.7L TPI that came factory in my 1990 Iroc-Z.
Omg lmao🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
@@sonny9608 yeah, base line on that engine after all that work was only 221 hp.
@@tommymchone5403 it was 227 before they dialed the timing back 4 degrees for the nitrous setup. if the base 305 made 152hp of 190hp originally that's a roughly 20% power train loss which would translate to the last gen 350 tpi w/245hp, and 245 hp w/20% power train loss is right at 196hp at the wheels. 227hp at the wheels translates to 281hp at the crank, 281 or even 274 is a little more than the stock tpi. Now with the money spent to gain only what they did I would have rather them just swap in a junkyard ls truck motor 5.3/6.0 and have more right off the bat, but I don't think those motors will Mount to a 700r4 tranny, but I don't truly know.
@@brandonmccollum6349 Far as I know, GM has never changed their bell housing pattern, so the 5.3L and 6.0L should bolt up to the 700R4, but if you're gonna grab a newer ls, you might as well grab a 4L60 to put behind it. The 700R4 was good for daily driving to and from work on the highway, but they don't like too much horsepower and torque.
@@tommymchone5403 I here that, nice to know. Don't hate me but I'm a Ford guy so some gm detail for me is missing, but I can't help but give props where props are due!! Ls motors are probably the best all around efi engines around.
I had an old 5.0. So not surprising on the low power. And I am not a hater. I love these cars and how they look. I would take the easy road and do the LS conversion.
Ditched the tuned port? Weak.
This is 2019, stop screwing around.
EFI is too expensive and undependable... and TPI whacks off HP above 4500 RPMs...
A 80s car with t-tops in the bonus?
Raindrops falling on my head🎶
Scotty Kilmer would've junked this car on first sight fellas.
Fuck scotty
Loved it guys, those Camaros are Iconic. I think the commentors are not realizing that you are doing rwhp not at the crankshaft. Anyways keep up the good work if you read this.
We realize rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
They would have come out better converting the TPI to a Holley Stealth Ram set up with a GM hotcam.
True! ... Instead went rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
The most unbelievable thing about this video is that you got a iroc in that shape for $3000. That alone is a bang for your buck
Just put n.o.s on the stock 305 it would have done great.....
agreed sir, mine made more than this build.
It was down two cylinders
@@cdbennett2332 So fix the problem, cheaper than buying a used 350 and throwing a trick flow top end kit on it. Clean up stock pistons, hone it out with a dingleberry and put some new file fit rings, check that the valves are fully closing and it's sealed up.
I have to admit I always liked the Gen3 IIROC Z. Being more of a Ford man meant I had an enduring affiliation with Fox body Mustangs. However, I think the IROC Z is the best looking Camaro period. It also has an excellent chassis, better than a Fox body. The thing that let it down, was weight. The shitty heavy doors, now the Fox body was no Mercedes in that regard, but those doors at least closed with reasonable precision, and didn’t sag after 5 years. The other thing was the interior, not so much the seats or dash, but the cramped floor layout and crap headliner. Anywho, it still warms my heart when I see a clean Z with original wheels.
I’ve watched power nation for years I’m a big fan but this build is disappointing to say the least. That’s a sad little 350 and why ditch the efi for a carb? Just isn’t right.
I remember my grandad telling me about his days dirt racing back in the day, “Chevy might have made a lot of 350s, but not all 350s are made the same. No matter the love or money you put into it” I’m not sure if this applies here or not, I just know it should’ve broken 300 fairly quickly with those heads, cams, and intake let alone the NOS.
who pays 500 for a 350? their 100 all day. you get complete 5.3 for 500!
Trick flow heads,,, a 600 Holley,,,, a nitrous kit and a ton of other new go fast parts !!!! All for 3500 bucks!!!!!! What planet do you shop on???? Those heads alone cost more than that here on Earth!!!!
Lmao 227 with a trickflow top end
Even the new kia stinger makes more power then that...
Hell even hondas come with that much power
And they only have half the engine this p.o.s does lol
Yeah, cool build but with that budget you could've done more hp! Hell, you could've done a turbo blow thru carb at 6-8 psi!😆 Keep your channel rolling! Props!
Needs more compression to make that combo work
Yeppers, rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I know that the 350 is the easiest to work on and buy parts for but i really want to see someone build a nice 305. a nice cam and some afr heads would make it come alive.
Best engine ive had was a worked over olds 307 chevy 350 didnt have the rpm it had
305s will runforever as well
Thanks to 305 sprint cars there are enough really nice parts to make 500hp with them now. Dart even sells a 305 Little M block making a four didgit hp forced induction build possible.
Lots of 305 build articles/videos available online...
@@user-iu6vt1tz7v - Olds heads can't be made to flow like Chevy heads...
I like the rebuild parts including the heads, intake, HEI, and so on. The 350 is down on power due to the dished pistons; the SBC has low compression. Swap those pistons out for some flat tops, use Fel-Pro 1094 gaskets and keep your compression. Nice work.
Of course, they used rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
Smh i had a 355 with simple Edelbrock Performer RPM heads and 600 lift cam single plane on flat tops 3.73 gears 1 3/4 headers 4000 stall N/A and trap 11.90s in ss Monte. Just a simple bs build but that iroc is sad poor choice in cam and that carburetor belongs on a gokart lol.
True, problem is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
I don’t care what anyone says I still love those cars, I was born in 83 so I’m only 38 but I still love so many 80s and 90s cars
Why did they opt for a damn carburetor EFI is so much better and already there
That's what I was sayin! Lost total interest once I saw they were using a carb
Truth
I was blown away too. Throw away a halfway decent EFI system?!
OBD1 injection system.....not that great, carb will make higher hp....This engine was a turd though
It’s an OBD1 EFI. Those are notoriously hard to tune, burning chips/proms and crossing your fingers that the tune is right. Carbs are easier to deal with than that setup.
It’s not like the EFI on LS engines, where you plug your laptop in and boot up the HP tuners.
The TPI system was the best part of those cars.
Good torque, but no more HP above 4500 RPMs...
80's era Pony car, it almost sounded like a Mustang referral to me and all us Chevy guys out there know that those Mustangs can't keep up with us.. Chevy #1 always...
I don't know, 150hp... I think the Ford's breaks would get pretty warm waiting for you to catch up.
Well Ford never made a very good break anyway
My normally aspirated 392 Mopar puts Out 485 at the crank. This is in 2020 and gets 23 mpg on the flat with A/C running.
I've built many sbc motors and never had to spin the cam a 180° out to be on tdc. So I call bs on that.
Tommy Powers I thought that was odd too and I’ve never built a sbc personally lol
At dot to dot, that's number 6 firing on a SBC, or a BBC.
I personailly don't believe that with as many times I have rebuilt a sbc with the dots lined up and ran perfect.
@@tommypowers9695 - You were lucky... many people get the crankshaft 360 degrees off at first...
I had one of these when I was 16 and now I’m driving an import with 500 wheel. My old Cameron had 175 hp
That's alot of Time and money spent for 75hp gain smh.
I kno right
@@louphi34 coulda pulled a 5.3/6.0 outta the junkyard, dropped a walboro 455 in the tank, swapped the cam only and did more hp than that lol.
they make it look so easy, I should have went to school for this stuff, never did machine shop or anything in high school
They screwed up this build! Used rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
150bhp from a 4.9 litre engine.. wow.. that's.. gutless.
We've got 2.0 (122ci) engines from the same era that make the same! - Case in point C20XE GM 4 pot.
305 is 5.0 liters. That Vauxhall/Opel engine may have made 150hp, in 1988 when the IROC had 220hp, but the IROC had 290lb/ft torque, whereas the Vauxhall/Opel had maybe what, 135-140? It would have been worthless for a car the size and weight of the IROC. However, I'm sure it was perfect for a 1900lb Euro tin can.
@@TheKiltedYaksman1 nothing wrong with a lightweight vehicle. Automotive design has been chasing lightness in there performace vehicles for decades now. Even the C1 Corvette was fibreglass and have been some kind of composite or plastic ever since.
a) at the wheels not flywheel like your power rating b) torque is almost 300 poundft(or triple your rating) believe me this eats your junk
@@trillrifaxegrindor4411 How? Where did find this information? Theres a 1000lb difference between the 2 cars. The 1988 vauxhall astra gte does a 1/4 mile in 15.7 the iroc camaro does a 15. Eating? Barely, in fact any human with any sense of shame would be pretty embarrassed a front wheel drive grocery getter is in the same et bracket. That 302 is a CAFE regulated, low compression clump of shit. Its not a Hemi, its not a Ford Boss, its not a 454 ls6. Its and old library bus motor.
@@2011metalmaniac eh it's a 305
A 555 lift cam with a stock convertor that couldn't even stall at 2000 rpm on a good day! That oughta idle good, be a pleasure to drive around town, and have a blistering 3 second 60 foot time at the track...
Kenny DeMartini
With how smooth it idles, I think they gave the wrong cam specs
My stock converter stalls at 1100 RPMs in my stock TPI 350...
@@stlchucko - Smooth idle is from no compression... Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the 475 HP heads and way too big 550 HP cam...
@@BuzzLOLOL
Even if it's as you stated ("Rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance"), the valve reliefs would have to 30cc to get 7.5:1 compression. Most pistons like that with 4 valve reliefs are anywhere from 5-15cc, so even on the large 15cc size, that'd make the compression 8.5:1. Plus, if it were bored 0.030", that'd add another 0.1 to compression.
PLUS...
Even if the compression is 7.5:1, that wouldn't make a cam that's 246/254@0.050", 0.555" lift, and a 112 LSA sound as mild as it does. I have a much smaller cam in a 454 (210@0.050", 0.500" lift, 110 LSA) and it has more lope than this small block.
PLUS PLUS...
The Dyno (17:20) showed that HP peaked at 5k rpm. There's no way a cam with 246 degrees @ 0.050" would peak there in a 350 cid engine, especially with decent heads; regardless if it had 7.5:1 compression. With those heads, it should have easily made peak HP at 6k rpm.
Even a 224@0.050" cam with stock Vortec heads will make peak HP around 5500 (much smaller cam and heads that flow 20-30 cfm less).
ALSO...
Those TF heads flow 253cfm @ 0.500". That's enough to support over 500hp NA. Even stock L31 Vortec heads (upwards of 230cfm) flow enough to support 475hp NA. So I don't know where you're getting "the 475 HP heads", let alone the "550 HP cam" nonsense.
@@stlchucko - Take a closer look at those horrible pistons at 07:18 !!!
Huge champfer around the outside corner/edge...
#1 sitting way down in bore...
Large dish of at least 22cc...
Plus 4 valve eyebows in the bottom of the dish...
Plugging the numbers into Summit's Compression Calaulator give 7.2:1 !!!
Not much more compression than a campfire... LOL !!!
Throw all power expectations out the window with such a soggy running engine...
It's why a 1978 L82 Corvette 350" engine with L46 224/224 cam was rated 180 HP...
We grab 195cc heads when building a 475 HP engine...
We grab 244/254 cam when going for 550 HP...
We don't build with 7.2:1 compression ratio...
( I realize inexperienced people look at pistons like that and call them "flat tops"... )
www.crankshaftcoalition.com/wiki/Quench
Wow they limited that engine between the intake and carb,the stock exhaust system and using that junk ass transmission that is the 700r4
Yes not having headers kills it and exhaust but they got weak can and I think those are cheap heads and needs porting
Actual problem is rebuilder dished pistons that sit .020" lower than stock plus .045" thick rebuilder composition head gasket gives .090" engine quench distance and about 7.5:1 compression ratio... crippling the expensive 475 HP heads and way too big 550 HP cam...
pretty easy to build for $10k if you have a solid rust free car to start with. Ive built a dozen or so back in the 90s for around $10k-15k. but using a LS block and making close to or over 500HP. T Tops are sweet, if they dont leak every time it rains. At least you can get parts and seals cheaper today.
You could do better with an LS swap. 291 WITH No2.....sad.
They could have done better with an LT4 hot cam in an othewise stock Vortec 350. No real need to swap in a plastic engine.
The 5.7 liter IROC-Z is the cream of the crop but a lot of people didn’t like the fact that it was only available with the automatic transmission. The 220-240 horsepower 5.7 liter was the most powerful engine you could get in a 3rd gen Camaro but was easily upgraded to put out more power. Prices are going up on 3rd gen Camaros as well as Fox Body Mustangs.
5.7L wasn't available in '86...