Weak Big Block Chev • Wrong Parts + Poor Assembly = No Power!
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- Опубликовано: 1 окт 2024
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The guy who bought this engine was told it would make 600 ponies. But when Nick put it on the dyno, it barely made half that. Now he is going to tear into the big Chev to find out why.
Whoever built that motor just threw it together for a quick flip.Knowing they would have no trouble selling a BBC if it looked the part.They never expected anyone to put it on a dyno before they installed it.
yup.
We need to call these guys out!!
@@terryschnereger8531 I would be going back to who I got that motor from and giving them two options either 1) giving me all my money back and they keep the motor . Or 2) give me back at least half if not more of the money I paid and I keep the motor. Then you tell everyone you know not to do business with them.
I'm a Mopar guy but this is the kind of stuff we all need to watch each others back and expose the scumbags who try to screw us over. No matter what you drive.
@@whitelightining7125 agreed. Nick should tear it down and do a full race rebuild if the owner expects to get 600 HP out of the big block. Those heads are excellent,but who installed the pistons 180• wrong ? Needs a better cam,too.
You’d be crazy not to, paying big block dollars for an engine that’s claimed to be 600 hp,forget it.too many shysters out there
105 psi compression? I've had farts with more pressure than that
badcactus72 taco Bell helps get you to 120psi
@@spankthemonkey3437 lmao! I'll take that under advisement, but I'm scared to blow out an o-ring!
badcactus72 yea that rear main seal is important you don't want to slip and fall
I’ve had coffee give me a higher compression than that.
use a jalepeno spray injector to get to 170psi with them tacos
obviously he had the engine laying next to the car for so long, all the horses ran away
Runes. LOL.
Con job,the car community is ate up with it . Do your own work If you can
Good one!!!!
Lol
That happened to me once
I love seeing badly built engines tested, taken apart and the mistakes explained. There's always that factor of surprise.
Feel badly for the customer though...
I call that educational process when they don’t pay attention to the how to build engines in the manual
me to
ahh I love "those engine builders", the ones that calculate hp based on adding up the box tops...
iguess they figured it was half way there, lol. well some smaller chambers or reverse dome pistons would do the trick along with a bigger cam and 175 to 190 ish psi. oh and port matching and head work. etc. etc. the list goes on and on don't it.
That's why I put stickers on my cars ... +5 hp per sticker.
@Jason Davis why?
@Jason Davis As a young man I had a friend who was a retired Air Force engineer who was in on the testing of F-4 phantom engines for the Black bird project,he said the standard phantom engine produced 30,000 horse power with different fuel they could achieve 175,000 hp. Now the fuel he told me was good for extremely high altitude flight,the three key components: first was a thing I think he was mumbling to protect secrecy it sounded stupid furfall alcohol,second hydrazine, third aniline oil to control burn-rate,he was retired and had 2 hobbies fishing and flying his P-51 Mustang,he was a great man loved to listen to his stories.
One thing I left out the whatever alcohol and hydrazine would detonate when in contact with each other so the need for the aniline oil.
When I purchase engines from anyone in the private sector, I use a cheap bore scope that hooks to my phone. It will tell you if a engine has flat tops, you can easily look at the valve train, you can check to see the bottom end, or see if a engine has four bolt mains (if that's the claim). It's quick and easy, and if the seller doesn't want to let you investigate well that tells the whole story anyway. Another great video Nick thanks.
You can get one for under $20 and I agree with you 100%.
@@michaelwilkening8542 👍
What motor are you using?',; calling yoself the LS killer???????
What motor is you using calling yoself a LS killer',?; lol another GM Hater man smh The kings of HP still running things lol
From the moment nick said flat tapped cam, that's a big problem out the gate, plus rust that's literally blocking air too go into the rectangular ports, another problem,then them pistons 😳,if you planning on drag racing with that current set up your losing every last race ,period‼ even against some one on a skateboard
It is a 600hp* BBC. The seller just forgot to tell the buyer that it requires a 300 shot of NOS ( not included )
😂😂😂😂
"600 hp capable..."
"Headers, High rise intake, 4 barrel Carb, a new mild cam, one see through distributor cap and new plugs..""
"6 new parts × 100hp = 600hp"" 👏😕😂
Anyone who knows anything knows the clear caps are junk....thats the sign of a noob
8.0:1 CR lol
Notime ForFakeNews don’t forget 4 bolts main you have to add it by that
@@ToxicMisfitsYt + 400 = 1000hp 😮 😄😂
@@andrewjenkins879. Probably not even 8:1. I was guessing low 7s compression.
Reminiscent of the 1980s.Every 350 chevy made 400 horse even when it was a 305 from a 1978 Caprice.
And they were all "Corvette LT1's" with a rock-crusher M22 🙄 glad the LS has taken over. It's crazy what power guys are making on junkyard 4.8s with a turbo lol
The typical backyard Chevy boy from the 90s.
This is how it is in Germany. Dude drives a pos 1980 Parisienne Wagon with high jackers and a 350HP 350 - I mean, it has a Holley carb and cherry bombs! smh
Lmao
Was not 1 400 factory hp 350. in early 80s not 1
I guess this shows that it’s really hard to not make some power with a BBC. Low compression, tiny cam, big rectangle port open chamber heads, and a single plane and it still made 366hp. It literally had everything working against it.
A set of closed chamber oval ports and dual plane and it’d be a nice torquey motor. Dome pistons and a bigger cam and it’d be a fire breather. Either way and perform way better than when it arrived.
My C30 dually has a 454 that's supposedly had a cam put in it. Now whether or not it's just a stock replacement or an R/V cam or something with more of a performance grind I have no idea. No one in my area with a chassis dyno or even an engine dyno from what I understand so I'm not sure about the cam and I dont want to tear the entire front off my Rat motor to find out. Had planned on dropping on a set of big block Vortec heads but I've been told they won't work on a Mark IV block so I guess I'll just leave it like I bought it.
C30 usually has the RV type cam to begin with
@@modelnutty6503 regardless I don't know for sure what kind of bump stick is in it since I was told it had a cam put in it when I bought the truck. I'm hoping they ment it had a replacement put in it. I've been told the Chevy engines had issues back then knocking lobes off because they weren't hardened or something like that.
That guy got ripped off! Man I like that roadrunner
At least it was actually rebuilt... could have been an old motorhome engine with 100K on it and the only thing keeping the rods from knocking is the 10 pounds of sludge in the crankcase.
That was my thought too. A set of dome pistons should bring that engine to life. Annoying to have to tear down the engine again but not a huge deal with it being out of the car when bought.
@TheMEXICANBEEF Avoid the hassle set the timing 42 btdc buy some MOROSO octane booster if you can still find it if not go to your chemical supply house and get some aniline oil just don't get it on you,you'll get dizzy fall down and die of respiratory arrest,mix that one quart to 10 gallons of 93 octane,hell throw a gallon of toluene with that too,you may even want to try different mixes with e-85 get that virtual compression ratio up and then you'll have a rompin stompin wamma jamma untill it goes bye bye,poof!
At least it wasn't a krylon rebuild with it paint it ship it lol
I prefer the 454's out of motorhomes. I build them for demolition derbies. Even the hated peanut port heads work great for a torque build.
Wow that’s hard to watch as an engine builder I just wanna see that Big Block Chevy built correctly with the right combo and back on the dyno 🤦♂️
There is always a reason an engine is sitting. If it was healthy and made big power it would be in a car. People don't let too many high-performance engines sit around guys. Great video Nick!
I disagree. Most budget builders will do their builds in stages. They either build the engine first or build the car. Life happens, things change, health fails. This is even more so for people on a strict budget. That window gets bigger because vudgets are smaller and is more prone to life disruptions. Mistakes are made from ignorance and not doing homework and desperation to complete the job. A flipper sellsa fresh engine with cheap parts. Not an engine just sitting for awhile.
That's not always the case I have a new Ls 7 454 still in crate that I bought in the 70s to install in my Ls 5 corvette still have both 55k on vette
@@caclark7600 Damn you don't go to the garage and just day dream about what that thing sounds like?
These insights into your shop are a valuable source of knowledge as well as great entertainment for us Tubers. Thank you for being so free with your experience and showing how working life can be a gas with the right attitude. Like others say, take care of yourselves and work safely. You would be missed by many if you were injured. Good to see Vacily wearing gloves when handing oily parts.
a .030 flat top with 119 cc merlin heads then you are lucky to get 8.00:1 with a thick Composite gasket adding 9 or more cc's, Just switch cam to mechanical roller 220 @ 50 , AND .675 Lift with 106 degrees LSA and advance it !!
Just Re-Tumble The Ignition To Match The Door Locks! As Far As The Chevy 427-I'm HOPING For 600HP With Mine And I'm Running ZL-1 .030 Repl Pistons(12.5-1), 074 ZL-1 Heads(Milled .020) W/2.25+1.88 Valves. GM 069 Intake And 850 Holley DP. Cam Set TBD. Think It's Got The Potential!
Mark. The ignition key did not work with either door. Bought a new ignition cylinder because it did not want to go into accessory position. After that, coded both door locks to the new ignition cylinder.
@@nickpanaritis4122 Understand What You Had To Do-However Just As Door Locks Can Be Re-Tumbled-So Can The Ignition Switch. Did It On My Chevelle. Found Unused GM Keys That Fit Door/Trunk Cylndrs, But Not Ignition Cyl. Now Have Orig 1968 Keys To My Car!
@@markpalio4411 . I know.
Underpowered & big block Chevy always go together 😂😂😂😂
Besides the fact that the pistons were installed wrong, did you check deck height? Luckily the cam is small and the intake valve apparently didn't hit the piston. Clearly the engine needs to come apart, check everything, and make some changes if the customer wants to make some power. Good thing it got checked before putting it in the car.
While it was a 454. It still had the factory heads with hand port job. Motor was rebuilt by DRE with his custom hydraulic roller, flat top piston with 10.1 cp and made 606hp on pumped gas with no timing really in it. Soft tune. You can make power when it's built correctly. This video shows what happens when people don't have a clue. I mean really. The pistons installed upside down is just ridiculous.
I would say Merlin heads are probably too big for a street 427 unless it's a high revver. World makes some Merlin oval ports that would easily produce that 600hp number and more torque for the street with the right compression and cam.
Edit: Upon watching this again, that's a tall deck block. So someone slapped some big port heads on a tall deck block. Okay, but you have to have the right pistons for it. I wonder if someone put short deck pistons in it as well? They are awfully far down in the hole.
STROKER ENGINE TIME!!
yup, similar thoughts. its assembled wrong for starters, piston+rings on wrong, wrong intake.. 366 ponies should be a bit higher, but the 125 compression range (lower ratio) could be good for normal driving, spraying when you want big power
you can make 600Hp with oval port heads. Those heads are way to big as is the intake and carb.
I bet you could wire that Dominators secondaries shut and still make the same HP.
@@modelnutty6503 Yeah, you don't know what you're talking about either. Probably, friends with the guy that built that motor. The 125 figure that Nick found was a cranking compression test in POUNDS using a compression tester. Nothing to do with compression ratio. While I would like to see around 140-160+lbs, it's more important that all cylinders are within that 5% number. If there are 7 cylinders showing 150lbs and one cylinder showing 125lbs, there is most likely a problem there.
I love when guys say rectangle ports are not good street heads 😂
Chevy ... what were they thinking.
the big block chevy has the worse rod stroke ratio of all of the big blocks,while its running stock it is trying to scrape the skirts right off the pistons,putting them in r/vs was a big joke,trying to race them is bigger joke,improve the rod stroke ratio to 1.8 from miserable 1,45 stock ratio,1.8-1.9 is perfect
383/400 mopar has a 1.88 rod ratio stock. put the 440 rods in and its indy car levels at 2.01. all that with a 9.98"' deck height lol.
If I had bought that motor I would contact the seller and send him the link to this video and ask him what he would like to do to help make it right. Of course the usual runaround answer that equates to nothing. Then get personal and start messing with his Facebook page or wherever he's trying to sell his junk. Maybe take it to court. I'm sure this guy spent a few thousand and if he fixes it he's gonna spend a few more. A real shame...
Tha car that cut Nick's eye AUTOMATICALLY gained 40hp!👍🙏
105? Seriously? That engine is dead .
Edward. True!!!!!
That 427 is similar to if you jumped in the sack with one of the Kardashians, and she just laid there, looks like it’s gonna rock your world but not even a tremor
That is a great simile😂
U.S. President Ronald Reagan, "Trust but verify".
Time to take the cameras and the crew over to the seller and confront him on his incompetent/lying engine "build".
That actually originated from the Russians trust but verify
@@geraldscott4714 Correct. Reagan used the term while negotiating with Gorbachev for nuclear arms reduction in order to get the Russians to agree with "verification".
Doveryai, no proveryai! (доверять, но проверить) :)
@@cgarris8674 Yes, I didn't cut and paste though......
@@snowcrest7863 Yes, I did - my Russian is terrible!!!!
Gear drives on a bbc is a no no. There only good to 6000rpm, a double roller chain or belt drive is much better !
Check the cam also , some people have no clue about engines or BBC.
A 427 L-88 revved easily to 7200 and had 7/16 pushrods not 3/8. And GM bbc square port heads can build 600 hp very easy. A Edelbrock dual plane rpm intake works well. 850 cfm holley is also a good choice. Try using a first design L-88 solid lifter cam. Get compression up to atleast 11.0 valve springs need updated also.most of this and good machine work should wake the dead out of it, but you are the man Nick.
Love your channel Nick
Wow, the things you find when you dig in an engine, 105 and 115 Cyl. compression, seen old lawnmowers do better than that,lol. Watch the overhead objects Nick, you don't need anymore knocks on the noggin' ;) Hope all is well in the shop on this fine day.
old cars had door and trunk key, and ignition was seperate
If you want to know the truth bring it to Nick's garage. If you want it to run right and make the right horsepower bring it to Nick He's the man. when it comes old school Great job, Nick, and that's a beautiful Road Runner. I can't. Going down the road. Be safe.
Solid comp 660 lift 292 302 duration look at the Pistons open chamber or closed chamber the comb chamber size
Nick shall bring the power forth. Nick bumped his head and made the flux capacitor.
But not with those pistons, maybe not the cam either. I dunno, this engine build looks more like lipstick on a pig rather than a serious build.
I believe the magical Chevy big block fairy's took off with the missing horsepower.
Darn it. We must have a hole in the window screens.
boruff68
Looking at the flame back through the intake the Cam is probably way off by 10+ degrees too
Nothing like building an engine looking for big horsepower. 40 years ago I had a good friend in the neighborhood who built a 383 for his Super Bee, nice car. He excitedly put it together with a big cam, single plane, and 11 1/2 pistons - with the notches facing toward the back. That engine made 0 horsepower but it also made for a VERY hot starter motor.
@@boruff68 - The 4 bent leaking valves were costing 200 HP...
@@mindblownwatcher8536 - The 4 bent leaking intake valves (from hitting the pistons) were letting combustion fire get back up into that gas/air filled intake manifold==> backfiring
Well that would definitely be a major letdown finding out your 600 h.p. engine is just over half of that. It’s too bad that some people have no qualms about ripping others off. I’m sure Nick will sort out this problem if the customer wants to spend some money.
The 427 puts a big flame out At Nicks Garage they don't scream and shout They calmly dismantle to see what the trouble's about Vasily on the case cuz 360 hp is a disgrace The heads are old n rusty The team can fix em trust me Once they put new pistons round the way they should be This engine will run smoothly...
Maybe it had 600hp with a 6-71 blower on top!? After all it did have flat top pistons to lower compression. I've put fla tops on purpose for that exact reason. Doubt that was the reason for this particular 427. At least they knew enough to put Merlin heads on it haha!
Nick can you please rescue my 454 from the grips if the untrustworthy builders and speed shops in the Atlanta area....I'm Desperate!!!
Ever notice if you have worked in an Automotive shop for any length of time that cars come in to the shop sometimes in groups of the same colours, Nicks shop have 3 orange coloured cars that they are working on in this video. It used to be a joke at the shop I worked at one week it would be mostly white car and trucks and a few weeks later silver was the main colour
then Black , then red ............It is something if you work in automotive repair shops ,mine were in Auto body this happens lots
I Got a low compression big block. Was going to get edel 100cc heads and 750 Edelbrock carb or AED carb mild cam. I got a edel rpm manifold...what can I expect am I heading in the right direction. It's only got 40k original miles so I just want to run it. I've got thick skin let me hear your opinions...
I became a mechanic in 1998. This man is living my dream.
Hahahaha 360hp. My 302 made that with a small cam and some TRickflow heads. Lol brutal.
If I remember correctly the base 427 in 1967 was 390 hp. This was a mild street able engine used in Impalas, Corvettes etc. it used hi test leaded gas. Using the flat top Pistons would allow today's regular pump gas. I think the geared cam may also be ground to turn the other way unless it has idlers like the old Jackson setup. This engine is a mess of incompatible parts.
yea I once bought a old 66 c10 that some guy put a 650 lift solid cam in a stock 283 . he kelp swearing it was over 500 hp. I kelp telling him I don't care I just want to the body. we drove it home about 4000 rpm it would start floating the valves. never did find out anything on it I just pulled it out and gave it away I think. but the old truck body looked like it rolled off the show room floor.
Guy would've been pissed if he raced someone with that "600 hp" 427. Lol as it was, even a hot 350 chevy would've put that things lights out.
A stock vortec with a carb and headers would almost get em
@levi blankenship i bet it happens a lot. And from my experience, most guys WAY over estimate how much power they have. I personally work with 2 men that have "600hp" 383 chevys. Both cars really make around 450hp or less. The one is a big cam, big carb, huge single plane intake, with terrible flowing restrictive small runner heads. Cam wants to go to 7,000, heads want to die at 5300. Lol
@@jordan-ramblinaround2323 sad thing is 450 hp from a 383 isnt bad.
Yeah, a 600hp car would have 2 seconds on a 366hp car. Lot of room on the big end.
First of all, it's a tall-deck block, 10.200" deck height, probably from a dump truck. Flat-top pistons with Merlin heads, he lucky if it has 8-1 compression. The fact that the pistons are upside-down, and the intake valves aren't hitting says something about the cam, and that it's not very much. There's probably a lot more wrong with it, and Nick will find out once he sees the entire engine. I don't know why people don't do a bit more research before spending money on an engine build. We see a lot of this at our shop as well.
I mean.. if you're gonna run a 10.2 deck big chev, you might as well come out swinging with 632".
@@HerculesRockefellerESQ A Chevy truck block cannot be worked into a 632. Bores are too small.
@@rollydoucet8909 it was a tongue in cheek remark. If you're gonna run a tall deck, might as well make it count.
@rollydoucet8909 for arguments sake, if you have a 427 TD truck block, with the right combo of parts, a sonic checked block, and a lot of time clearancing the crankcase fmor stroke, there is the potential for a roughly 550 cubic inch combo. But there are much more cost-effective ways to do it. Especially with how inexpensive some of the aftermarket stuff has gotten, by the time you consider how much screwing around you gotta do to make that combo work.
Sorry about that eye!
I once cut an eyebrow on a cars hood.
Ouch...
Anyway.
I also had to buy a new ignition switch and 2 door cylinders.
It's seems to be a MOPAR thing.
Isn't it the way of it?
When we work on a project correctly, WE always have SOMETHING to pay for no matter what we do, you pay for it with money or blood.
(And gain knowledge)
My Dad always said your going to pay for it...
About that BB 427 Chevy,
Backwards pistons?
I'm sorry it's hard to not laugh at that.
My kid brother bought a
Chevy S3 Malibu.
Someone was towing a trailer home with it but it only had a 350/350 HP Small block in it.
No need to say that it had its time.
Out came the 350 and a 454 took its place...
Now you can tow things with it.
I got the 454 out of a junkyard and totally rebuilt the thing to GMs specs.
My brother never had a big block...
I couldn't get him out of the car after that.
My Dad said-
"Look out for the Cops"
And of course, he got his first speeding ticket that week.
My Dad asked me to detune that car a bit.
See?
By the way...
That 454 made 570hp and 610 fp of "twist"
I told you would pay for it.
lol
Thanks Dad.
The way of the muscle car will never die.
T.
Can't wait for the new pistons and cam...nick will have that BBC pushin 5to600 soon
that 427 must have somewhere around 6.5 or 7:1 compression, I have domed pistons in my 396 with 98cc closed chambers and it's 10:1
id bet its a 454 ?? just put a ls6 sticker on it and youll get that 600 hp!! take off all the makeup and youv got a 73 pu engine ..how was the pinon coffe from newmex??
rich b. Coffee was great.
I'd sell the heads, replace with whatever Chevy has for a decent Hi-Po street head, install hydraulic roller cam for mid-range torque, dual plane intake with quadrajet, RobbMc mechanical fuel pump, 3:42 to 3:73 ring and pinion, run trouble free low to mid 12's, have sandwich with buddies at the track, call it a day and drive home.
This is very common....Even people put mean sounding cams in and its slower than stock..
I did a lot of Friday Night racing until the early 2000's and I seen it all..
Lots of so called built cars ran slower than stock and they had big wide tires and traction!!
There was a 1970 Cuda with a so called built 440,sounded really awesome but the car ran 13's -14's lol!!!!
The guy put a bone stock 1969 440 from a wrecked Monaco and it ran low-mid 12's by adding headers and a 750 carb/intake manifold no cam swap,no head job etc...So a, so called built 440 ran 14's lol a stock non hp 440 ran low - mid 12's(12.40's on average)..Same trans,same axle ratio(3.91) only swapped the engine..I seen many cars like this all makes!
He bought the stock 440 from my buddy who built engines,this 440 was from a t -boned Monaco that an older couple owned...engine was stock,never touched! Except for the headers/intake manifold and headers!
Cam and lifters don't make sense, but maybe the original idea was to have a blower on it ? Doesn't explain the pistons backwards or shitty work.
427 tall deck. Lol, saw that a mile away.
Was it the small bores?
@@grabasandwich Bores have nothing to do with it. A 427 TD has the same bore as a short deck or a 454.
@@SealofPerfection I meant if it was a 366 which apparently has smaller bores. My bad.
This reminds me of the older dudes who take a 350 Chevy V8 and they repaint it orange and put an RV cam in it and then they tell all their buddies how it makes 500+ horsepower 🙄
Used engines are like a box of chocolates, you just don't know what your're going to get. Great episode and take care. Didn't forget the cannoli and espresso.
And remember ... I don't want to see Pauley anymore either! 😉😀
One espresso and cannoli for me, please
@@wallacegrommet9343 No problem Sir! I will even throw in a Toscano cigar with a single malt. If you are ever in the Great White North!
Good time to brush-up on your chevolet big block i.d. numbers. Make sure you didn't get a truck 366! and ditch those hideous valve covers.
My thoughts exactly! Those bores look awfully small, and the spacing/meat between them looks thicker than usual. I'm not am expert though
We used to have a standard rotating engine and a counter rotating engine in boats. The screws have to turn outboard of each other or the boat will run terrible. Chrysler got out of Marine. GM and Ford stopped building counter turning engines. Marine gear builders picked up the counter turning screw in the gear. Chris Craft used gear to gear with their counter turning chevys.
The lobes on the cam were ground to provide 12756348 firing order. The pistons in small blocks were put on the rods backwards to compensate for the outboard piston skirt beating on the walls. Big blocks could not do that because the valves hit the pistons. Closed chamber heads were used. Breathing is not the thing in Marine. Long stroke low rpm is. Other differences included reverse ribbing on front and rear main seals. Standard ribbing on a reverse engine will suck the oil right out. Chrysler used slashes on the rear seal surface for the cranks. That had to be machines backwards too. Starter drives engaged backwards. Their drive teeth were machined backwards. Fields wound to spin backwards. I was there, that’s how it was, that’s what I got to say about that.
Mike. So one of two marine engines is all backwards. Interesting. Thanks for the info Mike.
Don't you just love working on someone's screw ups!!! LOL Take care and stay safe all of you!!!
I think they were building that motor as a Turbo or a Supercharger motor. Then you could get 600HP with those Flat top pistons. But that cam and those valve springs go to go.
Like it was meant to have a blower put on it to make 600hp. But they ran out of money for the blower and found that cam at a swap meet. Put it togethers anyway.
used to be a mod to stop power valve issues. you gave a passage seat a mark with a phillips screwdriver to put a cross mark in it, then you put a small bearing in over it. apparently if a back fire happens, the ball gets pushed into the seat, but the X mark you made keeps it from sticking in place?
V is for valiant, the way you approach life!
A is for accountable, someone to be counted on
S is for serene, your calm time.
I is for inventor, how many things will you create?
L is for little, the little things you do.
L is for laughter, you spread wherever you go.
E is for enthusiasm, in even the most dire circumstances
Well the good news is that all it should take is a new set of pistons and a new cam to get where he wants (and better valve springs, etc. to support a higher lift cam because the ones that are in there obviously can't support the lift of that small cam). Seems pretty obvious that whomever put that engine together didn't do the math up front to get the right components to get their compression ratio where it needed to be. I'll bet they didn't even measure the combustion chamber volume of those heads. Which, seeing how the pistons were put in backwards, doesn't surprise me.
Great show Nick! Teach us the odd mechanical part name/tool en francais once in a while!
Lol... What crapper.. Chevy motor..
Small cam.. used weak heads.. shitty rings.. and a lier who sold it... Great combination..
a smart buyer would make the sale contingent on getting approval from you that the engine performs. then hand over the cash.
Nick's garage.........episode uploaded Monday has 109,880 views, great job to Nick and George. .....CONGRATS
Hey Nick..being a tall dude at 6 .1' i have to watch low objects myself and I've hit a few things too..isn't any fun.hope you didn't damage the axel..lol..that's bad about the big block chevy..some people should at least ask someone who knows about them before they tear into them .. it takes a lot of money to make a big block produce 600 hp..i noticed the pistons are flat top..shouldn't they be high domes ? I had a 69 chevelle 396. 350 hp when i got through it was pushing 425 hp it cost me 1.600 to bump it up that much in 1976 that was a chunk of dollars for me .. but she would do it i was very pleased..that 70 roadrunner is sweet wish i had it..whoever ownes it is going to be very happy with it..beautiful car and a performer as well.. ok Nick see you on the next one and don't forget to duck...lol..Cheers 🍻🍻🍻🇺🇸🇺🇸🇺🇸
@Aaron Cubitt Taller than average height of most countries. I'm 6'3" and I hit my head on stuff sometimes. Most stuff isn't constructed for "tall" people. A hat helps cushion the head for sure =)
Just another 427 pulled out of an old Impala station wagon. Then it was advertised as a rare L88 one of three 600 horsepower.
Back when I was in the Air force I ran into a similar deal. A man had a 396 SS chevelle. He rebuild it and it would not turn completely over. He thought about towing it and decided to ask my opinion. Well I went to his home and we removed the heads. The pistons were 12.5 to 1 and were installed wrong and we also found a rag left in under the intake. He reinstalled the pistons correctly and removed the rag put it all back together and it run fine. No one is perfect and hast makes waste. When the work is hard and the wages are low take you time and go quite slow. Lol.
did the 427 owner get the 600 hp guarantee in writing ? I was thinking this is an old truck block engine .
yeah, i thought it could be a 366 school bus engine
Valve reliefs in the block = 396.... what a mess.
I’m seriously in lust with that Road Runner!❤️❤️❤️
Nick, get the door barrels matched to the ignition switch at the local locksmith ( pas cher )
I see many people with big money and zero knowledge buying old cars off crooks ( crosseurs ). One day you have to do an episode on mopar musclecar fraud and VIN switching, rewelding rad supports & quarter panel VINs. I discovered my first "fake" plymouth Gtx when I was 20 yrs old in 1990. The numbers on the rad support were filed off & filled. The quarters were RH satellite and the RS dash had one bolt snapped underneath.
Hot80s. I did give the door locks to a locksmith to code them the same as the ignition.
60th dont know is you can save that block. O well. 🤔😳👍
Nice muscle car community . Just out selling boat anchors
Nice job looking forward buddy. Interesting video. Thanks guys
The Road Runner is gorgeous!
Honestly how hard is itbbto put pistons in the proper way round im, no expet but have put a few donksbtogether all i do isvread and follow all the instructions properlyand thisnnwas b4u tubeb or watever
Thanks Nick and of course George the Super Camera Guy...WOW how good is he..... For the...update video...!
It's like my electronics instructor told us at the beginning. "You will spend more time fixing what others have messed up than fixing the original problem". After 40 years in automotive maintenance he was proven right over and over. A little knowledge is a dangerous thing.
Can't stand when someone monkeyed with float level because it's not running right , and you end up finding the real problem , and then have to fix the float level.
Keep the paws off the float level!
Right. He come fix this job some fawked. Up. Ok. That gonna cost you double. I have to undo someone else fawk up and do over again.
Part of the problem is decades of BS myths around the BBC's that came out of Chevrolet. So many people claimed and believed the LS6, LS7, L88, and ZL1 were these 500-600 hp (or more) right from the factory. So then when someone see's a 427 with "BIG rectangular port" heads and a single plane intake with a dominator, well hell it must make easy 600 if from the factory it was at least 550. If I saw a 427 with rectangular port iron heads, I'd pass instantly.
That’s a darn shame about that Big Block Chevy 427, but that just goes to show you some guys are not the mechanic that they think they are! Geez! It’s a good thing that customer brought it to you Nick, I know you’ll get that big Chevy lined out and doing what it’s suppose too! 👍👍
Was that Big Block Chevy actually a 427? And did anyone else notice the pebbles laying in the lifter valley? We're they there before or after intake was removed, because stuff will fall in on disassembly. 😎✌️
Heh heh, engines like this 454 crack me up! I had a customer back in the mid-80's that bought a pretty nice looking '66 Fairlane with a supposedly 'built' 302. Poor guy couldn't seem to get it past 4200 without breaking up, and after changing out the coil, spark plugs, new carburetor, etc., he finally brought it to me to see what was going on. It sounded great at idle. Nice lumpy cam, roller rockers hiding under pretty chrome valve covers... *on top of stock worn out Ford valve springs and retainers!* It had *maybe* 100 lbs. of compression across the board, and I notified the owner, and he said to pull the engine and see how bad off the rest was. The cam and lifters were probably the best part of the whole engine, along with an antiquated Mallory dual-point distributor, and an almost brand-new set of Hedman Headers. The rest of the engine was essentially bone stock, with typical small port 302 heads, and stock pistons. We ended up using it for a core and got a 347c.i. long-block (stroker crate motor), equipped it with late model ECC IV electronic ignition and a high output coil, and turned that sickly Fairlane into a 370 hp. tire melter that still got fairly decent gas mileage. Not too bad for around $2500 back in the day.😉
@Paradoxical Nightmare LOL, no doubt!😁
Makes 600 HP, ran when parked, only pulled the engine to swap in a ____(fill in the blank)___ . Yada yada, If you can't take a peek inside, let that deal ride! 8^)
Those are merlin iron square port head. They usually have a 119cc combustion chamber, with flat top pistons on a 427 it would make around 7.5 to 8.0 :1 compression, depending on the head gasket being used and the valve relief CC and the depth of the piston in the cylinder. I have built a lot of BBC's in my day and I can tell you these cylinder heads are complete junk on the street. I have nothing against world products heads but this product makes no sense on a street or race engine from a engine building stand point
The square port heads a crap until you get above 3000+ rpm, then they come alive. The problem is on a street driven car you are really never revving that high. Additionally to make big power (600hpo) you need big compression. Iron heads are ok if you are under 9.75:1 compression. But your not going to make 600hp at that compressing level. At 10:1with iron heads you need 96-100 octane fuel, so your not going to be running pump gas at that point. Additionally 100 octane its not available everywhere, so you not driving it on the street.
They don't make sense for a racing engine either since 1. cast iron and weight about 70 LBS each. and 2. aluminum will tolerate more compression and make more power and since you have to run race gas at 10:1 on iron heads why stop at 10:1 compression if you are building a racing engine? unless there is a rule that specifies the max compression being 10:1.
the only place it makes sense to use these iron heads is on an power boat with a large displacement engine, where lake or sea water will corrode aluminum heads. for example a 502, 540 or 572 BBC setup for off-shore racing, I would use these head all day long. but for a street car they are useless.
personally, I would switch to an aluminum large oval port head, and a smaller combustion as 110cc chamber a piston with 28cc dome, it would put the compression around 10.4:1 and you could run pump gas in it. a good roller cam something in the .230/236 - 240/246 deration @.050. should make some solid power. also scrapping the cheap distributor as well. personally I like MSD or Pertronics billet units. and while I was at it I would get rid of that gear drive on the cam, that whine gets annoying on a street driven car.
the other possibility for this engine would be to stick with the square port head, correct the issue with the pistons being our 180 degrees, and stick a supercharger on it and a cam to match. it still wont make the power of a oval port head from idle - 3000. but it wont suck either. still get rid of that cheap dizzy and the gear drive on a street car.
Shad. I agree with you 100%
i hate shivvys nick,but was herei dont get paid like you,so good luck,an tell them mopar or no car please....................
I Always build my own motors! I build them mecticuously! It may take a long time to finish but,they always perform and last!
My friend bought Dodge Charger -68. It had 440 in it with lots of new hipo parts. He took it to dyno because it felt lazy. Dyno result: 144Hp in DIN. 🤣
Carb was off, igmition was off, cam was off. After adjustments it gave 380Hp. Good example when Bob orders hipo parts and puts it together with no adjustments.
Its probley a 366 or a 427 truck engine
Oh boy..... for those like me... at 5:19 mark... put the Orville Redenbacher 'movie theater butter' in the microwave...hit popcorn button. Should probably pause video at 7:50 mark to check on popcorn.
A real 427? It's Chevy's best engine ever! Hopefully it's not a 396 in disguise, or it wasn't built by a knuckle dragger. How much do you get for a dyno session?
A guy in high school bought a 70 mustang with a 351C 4 v engine in it. It had a huge hoodscoop on it and just to mess with people he put a gear drive setup on it, the thing sounded like it had a blower, and nobody would race him.
What happened to the .040 over 427 Ford block? I'd love it!
ken. We are working on the 427FE to have it running for the summer.
Whomever built that 427 BBC didn't know what he was doing, let alone claim that HP rating.
I built a '70 402 with pop-up pistons and put '66 closed chamber heads on it (approx. 10.75: 1 compression). A .510 lift Crower hydraulic cam in it and a Holley 750 cfm double-pumper spread-bore to handle the fuel. A friend of mine, Joe Satmary, guesstimated the HP at around 465+. [Wink.]
How the heck did those valves survive??????????????? Micro cam!!!!!!!!!!
Probably a tow motor can. Usually of the type you'd put in big blocks found in duallies.
Actually, as far down in the hole as those pistons were, it was likely not even remotely a concern.
At this point in time, it's really really hard NOT to make power in a BBC.
6.9 compression ratio I added the combo right. What a boat anchor. They must of thought it was a sbc 64cc head
It just needs a better cam and a turbo. :-)