I wasn't able to upload the actual dyno test that made the best HP numbers, this was the first carb it was a terd out of the box we kept tweaking this thing because our thinking was the carb is new, after we changed it most of the problems went away eventually, we hit it with 200 shot of NOS and it made North of 600 HP

Simply amazing how back in the 60s to get that kind of power you would need Dual quads and 12 to 1 105 octane. and hardly ever would you see a factory corvette engine get more HP per square inch with all that. What I would have never thought of is the 2 inch spacer. We all know high rise manifolds ad torque but to think you got more HP....It is all about combination finding the exhaust length and intake length that meets maximum flow to the cam curve is an ART.....you did it.

WOW!! Definite improvement!! Nice and solid, little 350.. Great build sir!!!

Great video! From Japan👍

Glad to see this. I took a similar 350 with flat top pistons and added small chambered Aluminum heads that gave me 10.2 -1 compression, a edelbrock air gap intake, 650 holly double pumper brawler carb and a 498 lift flat tappet cam so It should be making similar HP on 93 octane.

Great build, nice work, really paid off.

I've been watching your videos for years and I always said if I ever needed a Built engine I was going to have you do it.

Glad your doin video's again!!! I always learn somethin when I watch ur show's! Thanks!

You are very knowledgeable. You love your work. We all love your videos. Excellent!!!!

Love your videos. Was hooked from when you did the SBC head comparison. Great vids

Love the dyno videos. Great results.

Just subbed again - glad your making more videos! You look happy and healthy - keep rocking!

Great video. I watched the olds 455 build you did a hundred times while assembly of my 455. Thanks

Best detailed engine building channel on KZfaq. The LS engine series build was excellent!

Pretty wild power for the money you spent. Thanks for posting, really great to see you back.

Well I've watched quite the different episodes on engines from a lot of other people but it seems your building motors is better than some with all the high dollar full race no other options available for the plain man or enthusiastic person who would like a better choice to enjoy the simplest things to make a difference between a good time & good choices. Thanks for sharing the video

Impressive results. 👍

Very similar to what a I'm putting together. Glad to see the numbers you got. Thanks for the video.

Best follow along. Never gets old. 👍🏼

Nice to see the students learning. My friend's son went to UTI a few years ago and got hired immediately by Mercedes.

Nice video! Great horsepower!

Hello from Pittsville Wisconsin!

Great video..thanks for your time on putting these videos together. I'm always learning something! Question..Do you have time to do a video on tuning? I have a Holley sniper and was curious on how you'd do the air/fuel & timing. Again, thanks for your knowledge & tips it's greatly appreciated..

Nice to see, I've got 2 Ford trucks with 351 w and m. Both are suppose to have good bottoms on them and I was planning on doing pretty much the same thing as you did with that 350.

Original 327,I changed the cam heads and intake,600 vacuum secondaries,with a tube 400 Trans made about 340 at wheels,which probably is around 400hp not bad on an old 327 block

Impressive how much improvement you got from changing to the 2" spacer. It would be interesting to see what would happen with an old Torker or Streetmaster single-plane.

Thanks for sharing this, I learned something today,

Really neat. Great advertisement for the school.

Great video. About to dyno a similar 350 rhs steel heads flat top bootlegger roller cam same intake carb.

Any SMC 350 man ( a Dart block is always a real plus ) would be proud of this gem. Going from 250 hp and lack luster torque numbers up to 412 hp and 432 ft lbs is a fantastic gain in anyone's book. That thing was really making torque all across the pull too, that's nice!

Thanks for showing the dyno curve, that's what tells the story. Where did the torque peak at, if you remember? Thanks, great build!

Dang, jammed that in there like a gentleman. Haha

Good stuff guys 👍

Love the video man !!!! Only guy I trust that actually knows what he’s doing… question i Have a 93 chevy caprice wagon 5.0 tbi motor from a truck . What will be your suggestions for me to get decent power . Do u recommend any heads, Cam & Intake manifold I can use that will suit good for her while still using my tbi set up ?

Great street engine!

Nice job

Please try a 32V head conversion kit

Nice 👍

412hp from a pump gas 350 sbc yep I'll take it🔥🔥🔥🔥🔥

carb spacers usually seem to improve things. Its a shame you have to contend with hood clearance issues most of the time thou (like in my case).

I would love to know your opinion on BluePrint engines. 355. I will be putting it in a 86 c10. Thank you for all your awesome tutorials and your over all teaching abilities. Everyone have a great day!!

This is exactly what I want to build with afr heads. Any idle clips from this set up?

Right on

Awesome! Congratulations for this build! Would like to make 250, 280, maybe up to 300 hp on my 350 TBI from 89. From which power range I should start to think about brakes and gear and other things? Thanks!

Hey engine master you want to submerge that tool into some Brad pen green oil.. it does prodush metal shavings.

So were those cork valve cover gaskets?

So, I've got a question that maybe you can answer for me. I started buying parts to build a 400 (406) SB Chevy for a very decent street motor. In that parts list included a set of AFR 195 cc Street port heads with the 2.05" intake valve. But, as I've done so many times before, I changed my mind and decided to order a simple ZZ4 350 short block and build it up as I didn't need 500-550 HP for this new particular build up. So my question is this: The ZZ4 engine uses a 4 valve relief hypereutectic piston in the short block. Do you think that My AFR 195 cc heads will work with these pistons? Remember... the AFR 195cc head uses a 2.05" intake valve which I believe is moved .080" away from the exhaust valve for clearance and flow. The ZZ4 has the smaller valve reliefs. I know that a head with a 2.02" intake valve will work, but, I'm concerned that the AFR's might touch the side of the valve reliefs. Thoughts.....

I wish this guy was my best friend. I do all my own wrenching but when it comes to maximizing the power/torque out of my 350 I don’t have quite the time or knowledge. Any mechanic near me is a hack…..

What RPM would you be willing to take a Gen. 1 350 to

B4 u went down in jets I’d of upped the timing a bunch of degrees???

Make you that power with GM 487 or 493 casting heads with the same flat top piston short block.

What was the idle like on this? I am surprised the power curve didn’t carry up to 6500. Maybe the cam was out of juice by then. Probably this combo is better for the street. Anyways probably even more power up top with a different cam? Great video!

Wonder what the cam specs were?

What did it cost for this upgrade not including the short block...just the top end as if someone was upgrading their good short block?

Hello Sir, out of curiosity what was your base and total timing and do you think an RPM airgap style intake would greatly benefit that setup? Thanks and nice build.

Hello sir I have a vovol penta 5.7gs marine stock 250hp at 4600rpm any recommendation for most economical way to increase HP for this engine I hope I can get 280 to 300hp at 3000-3200 rpm

What was the cam specs

This cam, Isky 292 Mega cam, I cannot find a roller version. Any ideas?

I wanted to ask you a question, let's say you have a 57 chevy, that came factory with a v8. Would you be able to take the clutch and pressure plate/flywheel off of that and install it on a say 73 bbc?

Can you go with hyperutectic pistons with 10.5 to1 compression, street motor. Hydraulic ft cam.

Unless it is a vacuum secondary carburetor, 750cfm is too big. Won't see that fully needed until 8000 rpm. Needed a 650-675cfm carb to start with. That's why the spacer was needed. Too low air velocity because of the carb being too big.

Not bad at all seems like it wanted more camshaft duration it ran out of air at 6000 and by looking at the dyno graph this combo wanted 7000 rpm

Trying to find the first video but can’t seem to.

What were the jet sizes with ? or without power valves? and what is your altitude there?

What intake runner are u using and what compression ratio are u running

The old Edelbrock catalog their crate engines make more power with the 180 heads than it did with 200cc heads. I’m not saying 432 hp is bad but for the money in this engine. I would have guessed it made a lot more. I know short blocks can be plain vanilla and it doesn’t make more power. Just think the 200cc intake ports with that much compression would have made a few more power.

i have a few running sbc i went bbc and never went back

Looks like you in a different shop

Do you have a website or contact information somewhere.

Holley has really gone downhill. If you buy a carb from them you may as well get 2 because there is a good chance one of them is crap. It’s sad

Am I just behind or did I miss something? The shop isn't your original one and in this vid you have a UTI shirt on? What's up?

Sadly soon all combustion cars including classics will be banned from public streets in entire EU and Scandinavia :-( In Germany the Green Peoples Party gave order to shorten fuel supply from 2025 on by reducing all conventional fuel stations to only one state operated central gas station per city or county. Now they want to slow down all the gas station pumps from 20 litre per minute to 2 litre per minute...From 2027 on in the EU certain car spare parts will be banned too....as exhaust systems, turbo chargers and even some engine and gearbox oils...California and New York will do the same from 2027 on.... So no investments should be done in oil burning cars any longer....They even created a new kind of crime here, called emissions and smoke crime (Bundesabgasbespassungsverbotsverordnung)!!!

I do not understand why you are wasting your time on these engines, you really need to be building Pro Stock engines, I bet you could set the record the first time out.