I agree 100% we need more aftermarket support for the 4.3. A hand full of cams, a couple of intake manifolds, and limited ignition options make this a hard platform to adopt.
@@overbuiltautomotive1299 Because most of us that choose to run the 4.3 is due to weight or packaging restrictions. SBC doesn’t fit in everything unfortunately.
Honestly the 4.3 v6 is great, stock it can take 500-600hp to my knowledge, and get decent gas mileage...although now I'm more interested in the newer lv1 and lv3 4.3 v6 which is based off the newer LT engines...I know one guy did a lv3 swap in his buick grand national after a prominent company for 3.8 buick engines completely botched the machining on the 3.8
Personally, I'd love a greater aftermarket for the 4.3. Like better heads, cams, efi intakes, etc. But, I wish the LV3 4.3 was more common. If it was, id rather just have one of those
Those were certainly some unexpected results, this was a fun test. I'm looking forwart to seeing more. It would be great if there was more parts availability for this platform in the way of more aggressive camshafts and heads
30 years ago I had an ‘81 Malibu with a 229. A gearhead friend of mine and I swapped on that manifold, a Holley 390 vacuum secondary, and a Comp “260” flat tappet cam with some 1.6 pro magnum rocker arms. Turns out we got lucky and didn’t coil bind the valve springs. Anyway i remember the 1st time going for a ride and him manually shifting the TH350. My 19 year-old self was thoroughly impressed. I think Hooker made a set of headers for that application back then but I think now all you can get is circle track stuff.
Well, Crane has a good steel billet cam, but they're in Australia now. Glad I got mine before they left. My 4.3 has flat top pistons, it's zero deck, the heads are milled, and it has 1.6:1 rockers. No way to dyno it, it's Vortec EFI. Oh, it has Hedman long tube headers.
I have a 4.3 with the Brodix heads, longtube Headman headers, a cam, and a holley 500cfm 2 barrell. Getting it all sorted in my S10 and may get it to a chassis dyno this year. Cant wait to see what you come up with. Note that Brodix heads with angled plugs have major clearance issues. I am running header flange spacers to get the primaries away from the plugs.
It would be great to see aftermarket support for the 4.3l beside Amazon turbo kits and marine intake manifolds. Can’t wait to see your videos on the Comp Cam for the 4.3 as well as any other content you plan on for the 4.3. Keep up the great work and I really appreciate your videos!
I think this thing could be rowdy! A cam and a turbo would probably go a long way to getting this thing to make 700hp. Good job Richard! I’m pretty sure I’ve watched every one of your videos! I’m still waiting for the V10 Ford Triton vs Dodge Magnum shootout!
What was the parts setup for this? I want to do this same package. Where do I find engine, trans, and clutch etc? I just want a carb and points ignition. Thanks
The gen 5 eaton m90 is good for about 400-450 hp depending on airflow mods and pulley's and whether 91-93 or e85...id be more interested if they can come up with a 2005-2014 gt500 supercharger adapter or even terminator cobra m112 adapter...that way there's no need to spin a m90 to the moon and back to reach above 400hp
Would love to see a full v6 engine build. I'm wanting to build a racing v6 engine for next year bump n run season and would love to what makes big gains in hp and torque
Would love to see how much power you could make with the 4.3 I ran one for 20 years in my work truck and even pulled my horse trailer to work getting wild cows up. Great motor!!
Interesting results. You know, in theory both practice and theory are the same. But in practice, they are not! Yes to more Chevy V6 but would really love to see the LFX (60 degree V6 with DOHC)
I have a 1997 s10 with 4.3 that I want to hop up. would love to see more videos on the 4.3. Cam change, port factor heads, test the brodix heads. would like to see it with fuel injection....
This video is causing alot of deep thoughts in the shop right now. Our shop lead is saying its a matter of the stock cam and timing in the mid range more to 🤨follow
We would like to see various cylinder head and camshaft testing on the Vortec 4.3 Liter! I personally would like to see you fabricate an intake to accept the Eaton M90 (L67)!?!
I would like to see more on building lthis engine. I'd balance the rotating assembly, deck the block, grind a hydraulic roller cam for the aluminum heads and a single plane, and Holley injection. If this engine is to be turbo charged, better pistons and rods will lead to a reliable 500 + horsepower engine.
It's good to know this is about the power level I'd see in my boat with that manifold. Looking forward to the swap from the 2-bbl now. As far as parts, it'd be nice. I know guys used to call up comp and ask for the sbc extreme marine cam but for a 4.3 and they'd put the lobes on a 4.3l core no problem. The biggest issue I think is that there are enough differences with the 4.3l over the years it's difficult to have parts as certain blocks use different pieces. Unlike a 350 where it's always the same there are some annoying differences.
What I assume is a wetflow issue is less likely the heads than intake manifold and or carb. I would think this kinda video would be way more interesting with dyno data included. Bsac, bsfc, A/f, water temp and maybe a air turbine reading.
This test was done many years ago using an oversized carb along with Comps biggest offshelf cam at the time the 280HR and the V6 ended up just under 300hp if my memory serves me correct.Pretty sure a V8 with th same mods would of made 100hp more but if you already have the V6 in something small like an S10 it might be worth hopping it up a little
I like the 4.3 i wish it had more support. I really wanted to put in my 65 el camino possibly with turbo, but i got gifted a 283 standard bore block, so i went with that.
I'd really like to see more performance oriented LT based V6. it seems to me like a 3/4 6.2 could do at least very close to as well as a 5.3, while being significantly smaller and lighter
@@richardholdener1727 I've seen them - I've watched most of your videos for years now - but I wish they made a proper hipo V6 with bore matching LT1 as well as head flow etc
I have a older v6 performance book that refered to the 4.3 as a semi even fire motor. I will have to check a motor to see. If so, it will need individual cylinder timing. Reason for second timing mark on harmonic balencer. #2 and #1 cylinder.
Interesting results. That's exactly the opposite of what I'd expect. It would be cool if there was a TPI style intake for these, instead of that spider injector stuff. Or maybe a tunnel ram...
I have a vortec 4.3 and a vortec 4200 the 4.3 is great for towing, I don’t know if something is bad with my 4200 it’s supposed to be more powerful but the 4.3 beats it because of it’s low speed torque and towing uses a lot less fuel
Why build the school bus exhaust system? If it was simply to get the exhaust blowing towards the rear of the room, just turn the dyno cart around, it has wheels for a reason. Yes, you would have to reposition some wires and hoses but that's still easier, and cheaper than buying and building a 15' exhaust. One last thing; is that a 2 1/2" to 2" REDUCER on the end of the transcontinental pipeline! The increased exhaust back pressure would explain the AFR
Im ALWAYS interested in seeing performance V-6 stuff. Im sure that 4.3 could make 300hp with a cam and heads. Especially heads. Maybe adapt the turbo setup from a Buick? Same basic bottom end, isn't it? Hell, I dont care. Its all fun!!
It looks like 2 possibilities intake manifold and or header manufacturer , if intake manifold by edelbrock performer rpm might make a difference or header by Doug thrones hooker etc isn't alot of options probably but the 4.3 is sadly underestimated have a friend of a friend with a chevy chevett with 4.3 running 10's on bottle and high 11's on motor and whenever hearing at idle you think it's v8 powered, definitely is a sleeper, love the videos hats off to you for all this unthinkable testing you it's alot more than powernation and many other automotive performance platforms that's been around along time, especially when you did some honda engines, (Bseries man myself) raised around chevy's but fell in different generation my old man always tell me I'm wasting my time with a 4cyl, pass away before honda era, on side note which was something else raised around is Vw air cooled motors they are also under estimated but don't see them in wreck yard either, good video/info my man.
Definitely 💯 agree with more cams and heads and I wish they made a TPI intake for the og 4.3 the 3/4 350 because I have one in my s10 and it’s a great little engine for having 240,000 on her and she still gets sideways all the time lol but I want more low end and I’m thinking about putting a marine two barrel carburetor intake and cam on it, but I’m not sure if it would help. I would love to see a test with a two barrel intake in carburetor set up and maybe a mild boat cam for a daily driver application love this motor, but I’m still tempted to put a 5.3 I have in it lol but it’s got a glass 4L60E in it so yeah lol
In the past I floated ( and was poo pooed ) the idea of a long header on one side of a V motor and a short on the other to see if this flattens out the power curve. Supposedly, some NASCAR motors in the 90's / 00's used headers with unequal length per bank ( meaning cyl 1 3 5 7 had unequal length and 2 4 6 8 did as well. No info as to if they paired tube length with cylinder firing order bank to bank.
I'm wondering if the crankshaft is forged? I'd like to see the results with the stock heads ported vs some good aftermarket aluminum heads with and without a cam upgrade. I'd also like to know how much it weighs with and without aluminum heads. So, it's 3/4 of a 350, then?
Man you gotta get a mic that can handle high spl in the dyno cell. Maybe try plugging in a pair of headphones as a microphone? I tried putting some airline earbuds in the engine bay once and they worked as a high spl microphone, but sounded... like airline headphones (real bad). So maybe a decent pair of headphones would work as a high spl mic in a pinch?
Affordable aluminum heads!!!!!! PLEASE!!!!!!! These engines are way underrated. More cams and some more affordable stroker kits as well would be sooo awesome. I know so many people that would build the hell out of a 4.3v6 if only they had good aluminum heads. No aftermarket heads though is what turns everyone I know off about 4.3.
I would like you to test the cross-ram intake in the beginning of the video, I have one of these that I ported. I also bought the last new Brodix heads available, the 210, but man oh man they need some serious porting to work right. The combustion chamber is straight out of the late 1960s, I can fix them but it's going to take a lot of work, plus they were not cheap. Also, I have a Comp Cam 224 duration, 525 lift, 110 lobe separation, probably the last cam also. I'm looking for header but probably going to build my own, would like to see more parts for these engines, there small, reliable, and make excellent power and they fit in tiny vehicles, you know the fun ones.
@@No1414body I’ve done 1.6 rockers in my 4.3 that has a comp 268/454 dur and lift cam and maybe seen 10hp difference if that much. Mine is .040 over flat top pistons port matched heads to a edelbrock 2111 intake Sanderson long tube headers and a Holley sniper efi. I’ve got it in a 48 Chevrolet flatbed dually that weighs 5,600 lbs and it pulls it around pretty good
I suspect you were getting different A/F from cylinder to cylinder. Your 02 sensor was most likely on one header out. Probably a combo of the heads and intake. Just a guess.
@@richardholdener1727 yep Above cam shaft U can simply unbolt its gear Balance shaft will holds in place by front ball bearing It lubricates at rear (sleeve) so cant be removed without blocking rear oil passage
@@richardholdener1727 well, dang. I got myself confused. Seems like some of the older ones are odd-fire, but quite honestly I thought the split pin is what made it that. I am seeing different information now. I guess I got too used to my good ole' 6G72 with a firing order of....wait for it: 123456
@@richardholdener1727 the stock crank is good to about 500. The various turbos on the internet show this to true (for example Finnegan's rotsun). the crank is first to go as you get into ~500 territory, especially easy with boost and current parts.
@RichardHoldener- I would ❤️ to see what BigDogs Porting, could do with these stock cast iron heads(w/bigger valves, plus milled, for more compression 9.75 to 10 to 1), BigDogs Ported carbed intake, BigDogs ported shorty headers, & a custom speced hyd. Roller cam by BigDogs Porting, to match this combo! It would be Awesome, if the 4.3 could get some chop, from a high overlap custom cam( with dur. @ .050 being around 220° int., & 228° exh.) , around .500 Lift, with a 110° Lobe Sep. Angle. Power band of around (3,000 Rpm to 6,500 Rpm) This thing, with a 3,500 to 4,000 high speed tq. Converter, drag tires, & matched Rear gear ratio, in a 3,000 Lbs. race wt. Ride would be a "RIPPER"!
I know it's off Subject but have you ever thought about doing a big bang with a 6.2? Just to see if the block goes first or if it's a rod or something. There's always debate on iron block 6.0 vs all aluminum 6.2 block. Just curious
@richardholdener1727 you said once that you couldn't run a 09 3.9 v6. Was just curious why. I'd love to see one with a turbo on it. If I had a transaxle to hold it I'd turbo the one on my rail buggy lol
Didn't Roadkill put a turbo 4.3 in the Rotsun? It's been a minute since I've watched it but I was thinking that's what they used. A turbo off a diesel and ran it till it decided it didn't like keeping all those parts in it. I remember it was a Chevy V6 just can't remember the size.
@@richardholdener1727 Think it would be interesting to know just how much power that engine can make. I know the old 2.8L V6 was tough as hell. I knew a guy who had one and used to beat the crap out of that truck. He would rev it way past the redline all the time. If I remember correctly he went through 4 or 5 clutches because he was always trying to do burnouts by revving the engine up and dumping the clutch. Yet despite all the abuse that 2.8L made it over 250k.
Those headers did what I have been told headers do for over 20 years, shorties for bottom end, long tubes for mid/top end. The AFR at the top end change didn't surprise me either. I am guessing that gooder scavenging of long tubes over short tubes is created the stronger signal. I wonder if smaller high speed air bleeds on the secondary side would help. I think a 300~325hp 4.3 in an S10 would be super fun, so yeah, gooder heads and cams would be cool to see. Maybe there isn't much V6 demand because there isn't much V6 support...
If you think shorty headers do better down low-then you haven't seen any (of the many, many) other dyno results. This was extremely unusual-enough so that I feel there is a problem with the test
I have a 2000 s10 xtreme and I always want to see things I can do to that thing to pep it up a bit, I am going to go with longtubes though I already know they're going to be a pain in the ass to get on
A big 10 4 on the different heads options test . That is where the restriction of air is handicap. ♿️ 👌 . Also, I'd like to see how the torque# is affected on a turbo set up with the different heads swapped . I remember u running the Atlas comparison & it only took 7 lbs to 14 on the vortec. I'm curious if theirs a significantly different change in that power curve towards the end.🫵the man,🙌👩🦲with the dyno😄
No support because no one really hot rods them. They pull them out and they put in SBCs. Sorry, but the small number people that want to hot rod them isn’t enough of business model to generate revenue.
You can buy a Nissan now with 310 hp and a 9 speed auto. It will smoke the trucks with 4.3 with all the modern goodies. Apple-Android play. Adaptive cruise, LSD, 18/24 mpg. etc. Plus the reliability is night and day. The Nissans go 300k miles with only regular maintenance. 2k and older S10's have the poppet injectors, junk. The intake manifold gaskets go out and dump water into your oil. Junk. The distributors are junk. Cap and rotor needed at least once a year regardless of miles. Radiator is to small. Auto trans for those years had issues. I could go and on and on. I just bought a 23' Frontier and it 100 times better than my 2k Xtreme ever was or ever could be. Can't wait for the peice of shit to sell, which reminds me, the resale value is shit too. Edit: The interiors are biodegradable and fall apart. Cracks everywhere.
@chuckyz2 as someone with a 4.3 your new Nissan isn't as reliable how ever an older Nissan might have the same reliability but less power besides the 4.3 is the best sounding v6 anyway
@@elcaminogaming6707 I have a 2000 Xtreme. Had it since new. Biggest p.o.s. I have ever owed. It was great until 170k then nothing but a headache from there. It has 300k miles now. The Nissan is far supreme in every way. First of all, everyone I have asked or known says they have had zero issues with their newer Nissan trucks. Car are different. The trucks are solid. The brakes are way better. The S10 would warp rotors on a regular basis. Rack and pinion on the Nissan. Need I say more about that? Variable valve Timing. Twice the payload and 6800lb towing. Dont try that with the shit brakes on a S10. The 3rd door handle doesn't break on the Nissan. Did I mention a 9 speed auto designed by Mercedez Benz? 12 bolt LSD diff. Front struts. Side and knee airbags. Much better crash rating. Dude, I could go on and on and on. Chevy S10's are and have always been shit. They look good lowered and are a good platform for LS swap and drag racing. But the 4.3 is the first thing you have to toss. 210 hp? Was ok in 2000 but just ok. Ther is a company that already has a blower for my truck and is in the process of getting CARB certified. The ride, the way it sucks up rough road and dips? It's like the difference between a 4 runner and a stadium truck.
I agree 100% we need more aftermarket support for the 4.3. A hand full of cams, a couple of intake manifolds, and limited ignition options make this a hard platform to adopt.
why v8 swap it
@@overbuiltautomotive1299 Because most of us that choose to run the 4.3 is due to weight or packaging restrictions. SBC doesn’t fit in everything unfortunately.
Honestly the 4.3 v6 is great, stock it can take 500-600hp to my knowledge, and get decent gas mileage...although now I'm more interested in the newer lv1 and lv3 4.3 v6 which is based off the newer LT engines...I know one guy did a lv3 swap in his buick grand national after a prominent company for 3.8 buick engines completely botched the machining on the 3.8
I would love to see more videos on the 4.3 V6
Personally, I'd love a greater aftermarket for the 4.3. Like better heads, cams, efi intakes, etc.
But, I wish the LV3 4.3 was more common. If it was, id rather just have one of those
I would love to see more v6 parts.
Agreed.
I built my 4.3 with a lunati cam, self ported heads, dropped biggest valves you can possibly fit in there. Sits around 350hp mark
Those were certainly some unexpected results, this was a fun test. I'm looking forwart to seeing more. It would be great if there was more parts availability for this platform in the way of more aggressive camshafts and heads
30 years ago I had an ‘81 Malibu with a 229. A gearhead friend of mine and I swapped on that manifold, a Holley 390 vacuum secondary, and a Comp “260” flat tappet cam with some 1.6 pro magnum rocker arms. Turns out we got lucky and didn’t coil bind the valve springs. Anyway i remember the 1st time going for a ride and him manually shifting the TH350. My 19 year-old self was thoroughly impressed. I think Hooker made a set of headers for that application back then but I think now all you can get is circle track stuff.
Well, Crane has a good steel billet cam, but they're in Australia now. Glad I got mine before they left.
My 4.3 has flat top pistons, it's zero deck, the heads are milled, and it has 1.6:1 rockers.
No way to dyno it, it's Vortec EFI.
Oh, it has Hedman long tube headers.
I have a 4.3 with the Brodix heads, longtube Headman headers, a cam, and a holley 500cfm 2 barrell. Getting it all sorted in my S10 and may get it to a chassis dyno this year. Cant wait to see what you come up with.
Note that Brodix heads with angled plugs have major clearance issues. I am running header flange spacers to get the primaries away from the plugs.
It would be great to see aftermarket support for the 4.3l beside Amazon turbo kits and marine intake manifolds. Can’t wait to see your videos on the Comp Cam for the 4.3 as well as any other content you plan on for the 4.3. Keep up the great work and I really appreciate your videos!
I think this thing could be rowdy! A cam and a turbo would probably go a long way to getting this thing to make 700hp. Good job Richard! I’m pretty sure I’ve watched every one of your videos!
I’m still waiting for the V10 Ford Triton vs Dodge Magnum shootout!
Would love to see more videos on the 3/4 350
Resonance in tubes tuned exhaust .
I put one of those in a 64 nova with a 1/2 ton truck 5 speed 20 years ago. It was fun
What was the parts setup for this? I want to do this same package. Where do I find engine, trans, and clutch etc? I just want a carb and points ignition. Thanks
Absolutely i'd love to see more performance parts for the 4.3! I's a stout little engine!
Aftermarket 4.3 heads, and an intake manifold designed to bolt a M90 roots blower straight to it. That would be awesome.
Don't know if it'll flow enough judging but this video my 500cfm carb is a little small for it
The gen 5 eaton m90 is good for about 400-450 hp depending on airflow mods and pulley's and whether 91-93 or e85...id be more interested if they can come up with a 2005-2014 gt500 supercharger adapter or even terminator cobra m112 adapter...that way there's no need to spin a m90 to the moon and back to reach above 400hp
Would love to see a full v6 engine build. I'm wanting to build a racing v6 engine for next year bump n run season and would love to what makes big gains in hp and torque
Would love to see how much power you could make with the 4.3 I ran one for 20 years in my work truck and even pulled my horse trailer to work getting wild cows up. Great motor!!
Need to do more testing on these. Turbos and prochargers!!
Interesting results. You know, in theory both practice and theory are the same. But in practice, they are not! Yes to more Chevy V6 but would really love to see the LFX (60 degree V6 with DOHC)
I have a 1997 s10 with 4.3 that I want to hop up. would love to see more videos on the 4.3. Cam change, port factor heads, test the brodix heads. would like to see it with fuel injection....
This video is causing alot of deep thoughts in the shop right now. Our shop lead is saying its a matter of the stock cam and timing in the mid range more to 🤨follow
Yes. I always want to see more. Thanks for what you do. 😊
Yes, affordable aluminum heads and cams would be a game changer
I enjoy the 4.3 content. I'd love to see a couple more cams on that stock build.
I've been wanting to see you revisit the 4.3! Love to see more!
We would like to see various cylinder head and camshaft testing on the Vortec 4.3 Liter! I personally would like to see you fabricate an intake to accept the Eaton M90 (L67)!?!
Wondering if the 180 degree turns to accommodate the flipped header affected power output?
I would like to see more on building lthis engine. I'd balance the rotating assembly, deck the block, grind a hydraulic roller cam for the aluminum heads and a single plane, and Holley injection. If this engine is to be turbo charged, better pistons and rods will lead to a reliable 500 + horsepower engine.
It's good to know this is about the power level I'd see in my boat with that manifold. Looking forward to the swap from the 2-bbl now.
As far as parts, it'd be nice. I know guys used to call up comp and ask for the sbc extreme marine cam but for a 4.3 and they'd put the lobes on a 4.3l core no problem. The biggest issue I think is that there are enough differences with the 4.3l over the years it's difficult to have parts as certain blocks use different pieces. Unlike a 350 where it's always the same there are some annoying differences.
Love to see aftermarket parts for the 4.3. So many have been made but so little in available parts.
If that engine has the aluminum rocker brackets, you can run 1.7 LS rockers on it in place of the stock 1.5 roller trunions.
What I assume is a wetflow issue is less likely the heads than intake manifold and or carb. I would think this kinda video would be way more interesting with dyno data included. Bsac, bsfc, A/f, water temp and maybe a air turbine reading.
This test was done many years ago using an oversized carb along with Comps biggest offshelf cam at the time the 280HR and the V6 ended up just under 300hp if my memory serves me correct.Pretty sure a V8 with th same mods would of made 100hp more but if you already have the V6 in something small like an S10 it might be worth hopping it up a little
I would love to see anything at all for the 4.3l and yes I would buy affordable performance heads
Richard find someone to grind the base lobe of the cam and increase the lift / duration or if you can get a custom one made
I like the 4.3 i wish it had more support. I really wanted to put in my 65 el camino possibly with turbo, but i got gifted a 283 standard bore block, so i went with that.
I'd really like to see more performance oriented LT based V6. it seems to me like a 3/4 6.2 could do at least very close to as well as a 5.3, while being significantly smaller and lighter
see the LV3 vids
@@richardholdener1727 I've seen them - I've watched most of your videos for years now - but I wish they made a proper hipo V6 with bore matching LT1 as well as head flow etc
I have a older v6 performance book that refered to the 4.3 as a semi even fire motor. I will have to check a motor to see.
If so, it will need individual cylinder timing.
Reason for second timing mark on harmonic balencer. #2 and #1 cylinder.
Interesting results. That's exactly the opposite of what I'd expect.
It would be cool if there was a TPI style intake for these, instead of that spider injector stuff. Or maybe a tunnel ram...
agreed
Are you familiar with the marine intake setup for these?
I think lunati makes a Cam for the 4.3, would love to see the difference from lunati and comp cam
I would like to see charts after porting the exhaust ports... If you haven't done that already
Would love to see 300 hp out of a 4.3 liter. Correct cam and aluminum heads should do the trick easily. Once that is done then I'll want one!
I have a vortec 4.3 and a vortec 4200 the 4.3 is great for towing, I don’t know if something is bad with my 4200 it’s supposed to be more powerful but the 4.3 beats it because of it’s low speed torque and towing uses a lot less fuel
Why build the school bus exhaust system? If it was simply to get the exhaust blowing towards the rear of the room, just turn the dyno cart around, it has wheels for a reason. Yes, you would have to reposition some wires and hoses but that's still easier, and cheaper than buying and building a 15' exhaust. One last thing; is that a 2 1/2" to 2" REDUCER on the end of the transcontinental pipeline! The increased exhaust back pressure would explain the AFR
you are incorrect in your assumption that the dyno can be turned around quickly and easily-the exhaust took a just few minutes
Do some testing on the 4.2l ford v6
Thanks, Richard.
Love the testing
Collector design on the long tubes limiting low end torque possibly?
Im ALWAYS interested in seeing performance V-6 stuff. Im sure that 4.3 could make 300hp with a cam and heads. Especially heads. Maybe adapt the turbo setup from a Buick? Same basic bottom end, isn't it? Hell, I dont care. Its all fun!!
Please push for aluminum heads and maybe a better intake🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
Only reason I swap sbc in s10 is no affordable aftermarket parts for 4.3
It looks like 2 possibilities intake manifold and or header manufacturer , if intake manifold by edelbrock performer rpm might make a difference or header by Doug thrones hooker etc isn't alot of options probably but the 4.3 is sadly underestimated have a friend of a friend with a chevy chevett with 4.3 running 10's on bottle and high 11's on motor and whenever hearing at idle you think it's v8 powered, definitely is a sleeper, love the videos hats off to you for all this unthinkable testing you it's alot more than powernation and many other automotive performance platforms that's been around along time, especially when you did some honda engines, (Bseries man myself) raised around chevy's but fell in different generation my old man always tell me I'm wasting my time with a 4cyl, pass away before honda era, on side note which was something else raised around is Vw air cooled motors they are also under estimated but don't see them in wreck yard either, good video/info my man.
My question would be what effect did the longer post collector pipe have on the torque curve..
Definitely 💯 agree with more cams and heads and I wish they made a TPI intake for the og 4.3 the 3/4 350 because I have one in my s10 and it’s a great little engine for having 240,000 on her and she still gets sideways all the time lol but I want more low end and I’m thinking about putting a marine two barrel carburetor intake and cam on it, but I’m not sure if it would help. I would love to see a test with a two barrel intake in carburetor set up and maybe a mild boat cam for a daily driver application love this motor, but I’m still tempted to put a 5.3 I have in it lol but it’s got a glass 4L60E in it so yeah lol
Try a set of sanderson cv97 they will clear everything and be a more equal length
Wondering if you turn the shorties backwards like the long flow would the numbers be a bigger difference
In the past I floated ( and was poo pooed ) the idea of a long header on one side of a V motor and a short on the other to see if this flattens out the power curve. Supposedly, some NASCAR motors in the 90's / 00's used headers with unequal length per bank ( meaning cyl 1 3 5 7 had unequal length and 2 4 6 8 did as well. No info as to if they paired tube length with cylinder firing order bank to bank.
the cup guys have header length and design scienced out-and none of them use shorty headers
Have oregon camshaft grind some custom cams.
Do you have a video out about how to make a turbo system work and what you need, a turbo for du mm ies for lack of better words
I'm wondering if the crankshaft is forged? I'd like to see the results with the stock heads ported vs some good aftermarket aluminum heads with and without a cam upgrade. I'd also like to know how much it weighs with and without aluminum heads. So, it's 3/4 of a 350, then?
Are those 1 5/8 or 1 3/4 primaries? V6 can be an odd duck but very rewarding when done right!
Man you gotta get a mic that can handle high spl in the dyno cell. Maybe try plugging in a pair of headphones as a microphone? I tried putting some airline earbuds in the engine bay once and they worked as a high spl microphone, but sounded... like airline headphones (real bad). So maybe a decent pair of headphones would work as a high spl mic in a pinch?
Can't even tell what the engine sounds like.
Affordable aluminum heads!!!!!! PLEASE!!!!!!! These engines are way underrated. More cams and some more affordable stroker kits as well would be sooo awesome. I know so many people that would build the hell out of a 4.3v6 if only they had good aluminum heads.
No aftermarket heads though is what turns everyone I know off about 4.3.
Yes, to all that.
I would like you to test the cross-ram intake in the beginning of the video, I have one of these that I ported. I also bought the last new Brodix heads available, the 210, but man oh man they need some serious porting to work right. The combustion chamber is straight out of the late 1960s, I can fix them but it's going to take a lot of work, plus they were not cheap. Also, I have a Comp Cam 224 duration, 525 lift, 110 lobe separation, probably the last cam also. I'm looking for header but probably going to build my own, would like to see more parts for these engines, there small, reliable, and make excellent power and they fit in tiny vehicles, you know the fun ones.
Shorties might increase cylinder pressure at low speed?
Before you change cams, try some 1.6 rockers, my experience is that they can bring 25 hp at peak
25 seems like a lot for rockers-but easy enough to test
@@No1414body I’ve done 1.6 rockers in my 4.3 that has a comp 268/454 dur and lift cam and maybe seen 10hp difference if that much. Mine is .040 over flat top pistons port matched heads to a edelbrock 2111 intake Sanderson long tube headers and a Holley sniper efi. I’ve got it in a 48 Chevrolet flatbed dually that weighs 5,600 lbs and it pulls it around pretty good
@@richardholdener1727
I'd agree, I don't think my 1.6:1 rockers are going to gain me 25HP. Maybe 1/2 that.
Any chance you could run some stock manifolds on the same setup?
I suspect you were getting different A/F from cylinder to cylinder. Your 02 sensor was most likely on one header out. Probably a combo of the heads and intake. Just a guess.
THE AF METER WAS IN THE EXHAUST-SAME SPOT ON BOTH-CHANGE WAS THE HEADER CONFIGURATION
@@richardholdener1727 I know. The air fuel was wonky on both.
Long tubes look like they had 3" pipes. Lost scavenging on the little V6 hence the torque loss.
Richard please run with/without balancer !!!!
How many HP it cuts from engine?
do you mean balance shaft? because you should keep the balancer/damper in place
@@richardholdener1727 yep
Above cam shaft
U can simply unbolt its gear
Balance shaft will holds in place by front ball bearing
It lubricates at rear (sleeve) so cant be removed without blocking rear oil passage
Another point is that this is an odd-fire V6. Does that make a difference in how the headers act? I would think so.
this is an even fire v6 (split pin crank)
@@richardholdener1727 well, dang. I got myself confused. Seems like some of the older ones are odd-fire, but quite honestly I thought the split pin is what made it that. I am seeing different information now. I guess I got too used to my good ole' 6G72 with a firing order of....wait for it: 123456
Don't think the length of pipe and 90s made a difference over the shorties?
PS - a stroker crank is first order in priority. Then we can talk about heads, etc.
cam, then heads, then intake, then boost, then displacement
@@richardholdener1727 the stock crank is good to about 500. The various turbos on the internet show this to true (for example Finnegan's rotsun). the crank is first to go as you get into ~500 territory, especially easy with boost and current parts.
@RichardHoldener- I would ❤️ to see what BigDogs Porting, could do with these stock cast iron heads(w/bigger valves, plus milled, for more compression 9.75 to 10 to 1), BigDogs Ported carbed intake, BigDogs ported shorty headers, & a custom speced hyd. Roller cam by BigDogs Porting, to match this combo! It would be Awesome, if the 4.3 could get some chop, from a high overlap custom cam( with dur. @ .050 being around 220° int., & 228° exh.) , around .500 Lift, with a 110° Lobe Sep. Angle. Power band of around (3,000 Rpm to 6,500 Rpm) This thing, with a 3,500 to 4,000 high speed tq. Converter, drag tires, & matched Rear gear ratio, in a 3,000 Lbs. race wt. Ride would be a "RIPPER"!
HCI go a long way
I know it's off Subject but have you ever thought about doing a big bang with a 6.2? Just to see if the block goes first or if it's a rod or something. There's always debate on iron block 6.0 vs all aluminum 6.2 block. Just curious
The alum (5.7L, 6.0L and 6.2L) blocks will not support the power levels of the iron blocks or the alum 5.3L blocks.
@richardholdener1727 that's what I assumed but I had to argue with some internet professionals 😂
@richardholdener1727 you said once that you couldn't run a 09 3.9 v6. Was just curious why. I'd love to see one with a turbo on it. If I had a transaxle to hold it I'd turbo the one on my rail buggy lol
Didn't Roadkill put a turbo 4.3 in the Rotsun? It's been a minute since I've watched it but I was thinking that's what they used. A turbo off a diesel and ran it till it decided it didn't like keeping all those parts in it. I remember it was a Chevy V6 just can't remember the size.
they did
@@richardholdener1727 Think it would be interesting to know just how much power that engine can make. I know the old 2.8L V6 was tough as hell. I knew a guy who had one and used to beat the crap out of that truck. He would rev it way past the redline all the time. If I remember correctly he went through 4 or 5 clutches because he was always trying to do burnouts by revving the engine up and dumping the clutch. Yet despite all the abuse that 2.8L made it over 250k.
I bought my son an H3 hummer, and I'm looking to install a 4 3. I'm looking forward to the next video
Could it be harmonics ?
Is there a method to know if short 1.875 headers or long 1.625 would be better
LONG TUBES HAVE MADE POWER BETTER THAN SHORTY ON EVERY OTHER TEST-I STILL THINK THERE IS A PROBLEM WITH THIS TEST
Can you let us know how much timing was used.
34
Stupid question but never tried 3800 and 4.3 same bolt pattern?
@@keithsmith9889
No
Why you teasing me with the cam video lol I wanna know what my comp 56-450-8 will do
me too
Is Scavenger effect the difference in the headers?
that should help power
Putt an ate fidy Barr' Grant Gremlin carb onnit. Whoo 😊
Those headers did what I have been told headers do for over 20 years, shorties for bottom end, long tubes for mid/top end. The AFR at the top end change didn't surprise me either. I am guessing that gooder scavenging of long tubes over short tubes is created the stronger signal. I wonder if smaller high speed air bleeds on the secondary side would help.
I think a 300~325hp 4.3 in an S10 would be super fun, so yeah, gooder heads and cams would be cool to see. Maybe there isn't much V6 demand because there isn't much V6 support...
If you think shorty headers do better down low-then you haven't seen any (of the many, many) other dyno results. This was extremely unusual-enough so that I feel there is a problem with the test
I just want to see it with 30 psi of boost!
What happened to that Bowtie 2 piece intake that you show on the engine at 0:30?
COMING-BUT IT IS FOR THE EARLY (NON VORTEC) HEADS, SO HOLES MUST BE DRILLED IN HEADS
@@richardholdener1727 Awesome!
I have a 2000 s10 xtreme and I always want to see things I can do to that thing to pep it up a bit, I am going to go with longtubes though I already know they're going to be a pain in the ass to get on
Dual planes have the runners above and below each other, that's a divided single plane.
it really is 1/2 and 1/2-meaning not a great design
@@richardholdener1727 Seperated by 240 degrees at least.
A big 10 4 on the different heads options test . That is where the restriction of air is handicap. ♿️ 👌 . Also, I'd like to see how the torque# is affected on a turbo set up with the different heads swapped . I remember u running the Atlas comparison & it only took 7 lbs to 14 on the vortec. I'm curious if theirs a significantly different change in that power curve towards the end.🫵the man,🙌👩🦲with the dyno😄
Was the choke plate closed?
I'll check the video again, but we checked
@@richardholdener1727at the 8:45 mark is where I saw it.
At 4 minute very very funny engine running ,,no carby then carby with choke closed LOL
No matter what link to header tubes are one tube to all heat to still could be the wrong length for the engine
Looks like it needs an emulsion tube change...
Looks like a closed choke plate under load...
it never moved
You want LS cams for a V-6? Run a LV3, and you'll have an LS minus 2 cylinders.
THE LV3 IS ACTUALLY A GEN 5 LT-BASED MOTOR MINUS 2 CYLINDERS-IT IS NOT LS BASED. I HAVE VIDEOS UP ON IT TOO
No support because no one really hot rods them. They pull them out and they put in SBCs. Sorry, but the small number people that want to hot rod them isn’t enough of business model to generate revenue.
You can buy a Nissan now with 310 hp and a 9 speed auto. It will smoke the trucks with 4.3 with all the modern goodies. Apple-Android play. Adaptive cruise, LSD, 18/24 mpg. etc.
Plus the reliability is night and day. The Nissans go 300k miles with only regular maintenance. 2k and older S10's have the poppet injectors, junk. The intake manifold gaskets go out and dump water into your oil. Junk. The distributors are junk. Cap and rotor needed at least once a year regardless of miles. Radiator is to small. Auto trans for those years had issues. I could go and on and on. I just bought a 23' Frontier and it 100 times better than my 2k Xtreme ever was or ever could be. Can't wait for the peice of shit to sell, which reminds me, the resale value is shit too.
Edit: The interiors are biodegradable and fall apart. Cracks everywhere.
No one watching this video gives a poop about a Nissan.
@@Turbogto_guy I give a shit. Their trucks shred all over the others in many ways but most importantly in reliability.
@@chuckyz2 if you say so.
@chuckyz2 as someone with a 4.3 your new Nissan isn't as reliable how ever an older Nissan might have the same reliability but less power besides the 4.3 is the best sounding v6 anyway
@@elcaminogaming6707 I have a 2000 Xtreme. Had it since new. Biggest p.o.s. I have ever owed. It was great until 170k then nothing but a headache from there. It has 300k miles now.
The Nissan is far supreme in every way.
First of all, everyone I have asked or known says they have had zero issues with their newer Nissan trucks. Car are different. The trucks are solid.
The brakes are way better. The S10 would warp rotors on a regular basis.
Rack and pinion on the Nissan. Need I say more about that?
Variable valve Timing.
Twice the payload and 6800lb towing.
Dont try that with the shit brakes on a S10.
The 3rd door handle doesn't break on the Nissan. Did I mention a 9 speed auto designed by Mercedez Benz? 12 bolt LSD diff. Front struts. Side and knee airbags. Much better crash rating. Dude, I could go on and on and on. Chevy S10's are and have always been shit. They look good lowered and are a good platform for LS swap and drag racing. But the 4.3 is the first thing you have to toss. 210 hp? Was ok in 2000 but just ok.
Ther is a company that already has a blower for my truck and is in the process of getting CARB certified.
The ride, the way it sucks up rough road and dips? It's like the difference between a 4 runner and a stadium truck.