Super big torque 743 hp SB Chevy build.
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- Опубликовано: 4 окт 2024
- In this, episode 53 of PowerTec 10, DV teams up with retired ProStocker Terry Walters and Dyno Tuner Jack Sain and the result can best be described as spectacular! With torque per cube figures exceeding at least 99.9% of other RUclips builds you are sure to find this build, done with off the shelf parts, well worth watching.
This is the man who got me to build my first small block chevy! With a book!
Which book? I'm doing my first soon
He is inspiring me… but I am unsure if I should… would love a 383 for my 94 k1500
@@jmc6940 "David Vizard's How to Build Max-Performance Chevy Small-Blocks on a Budget"
@@waynetoneseekerandersen2213 My first was a 383. Ask around about machine shops that are accessible to you in the case of an over-bore. Once you hear good things about a shop, go ahead and let them know what you've got and what you are trying to do. Tell them the rotating assy plan you have (ie just the crank or all new). Depending on your home shop, let them seat the crank and other things. If you want to do some work, ask what you can do, like deburring and all. Consider blueprinting and testing the block before the bore. I would get Vizard's book. Building is something that goes really good page by page. I had priorly built vw type 1s about 5 times (4 in high school), so I felt ready for the chevy.
@@soulcapitalist6204 It’s so great for you to give me some first hand advise! Yes I will be buying David’s book. It’s hard finding a machine shop with a clean reputation, since more are likely to complain than recommend. Thankyou my friend
I ordered $5000 worth of parts for my 5.7 vortec build and the very next day I discovered this channel. Needless to say i was able to refund almost all of my parts before they shipped haha.
😂👍🏻
😊😊😊
What did you end up going with?
Thank you David! I can't wait to build the 443 torque monster from your small block Chevy on a budget book!
David,I've always liked the 421 ci small block chevy engine,this is very impressive, my engine builder here in Colorado built me one with rons porting 18 degree heads,hogan's sheet metal intake,twin Holley Dominators,obviously not a street engine,but it made 840hp,680lb ft torque 20 years ago,he is now deceased, I know there are much better cylinder heads out today, im looking to build another 421 engine,hopefully clip the 900hp mark with a single Dominator, wish me luck
Ok
Hello sir. I am an engine tuner, on Austin Mini and other English cars, my workshop is in the south of France. it is thanks to you and your book that I was able to learn my trade. thank you sir.
You are very welcome sir.
You are a genius sir! Thank you so much for the intelligence you have shared with us common folk!
Very impressive!!
I remember the days of finding every little trick in the book to make a n a engine perform. Angle cutting heads, head porting, milling, spark plug indexing, bigger exhaust, stepped race headers, tunnel rams, carb mods, gapless rings, more compression, hi octane gas, intake manifold porting. Truck blocks, cadillac 500s in camaros.
Then all that changed when forced induction became cheap with used turbos, diesal superchargers etc. We made power undreamed of. 800 to 1250 hp now became fairly easy. This other n a mods take loads of, skill, effort and time.
Bloodviking
A big block Mopar recipe would be much appreciated, and thanks for your time and effort to bring us great information
I can not thank you, Andy, and the rest of your team enough for taking the time to share your knowledge with us!
Watching you makes me realize I know nothing about building an engine. I’m still watching with intent and hoping things start clicking soon. Thank you for the spread of knowledge
Terry Walters Racing Engines rocks! I live in Roanoke Va and I take them all my machine work. He has two of my engines currently and has previously worked on at least 3 other engines. Terry and Jack did a turn key, 385 sbc build for me a few years ago. It made 480hp with factory cast block and double hump heads with a 2x4 tunnel ram using 450cfm holleys. I'm currently running it in my 72 pro street Vega. Scat steel crank, Icon pistons, Comp Cams mechanical, flat tappet .555 lift cam. Great people!
Terry and Jack are no joke. They rock!
I know its asking alot but of Andy could put together a full parts list I'm sure many people would like to have it to get started.
I built an engine long time ago off bits and pieces of info from your books. The result was amazing, that 327 was a powerful especially on a budget .
Great job David! This touches on the possibilities of a total build using DV's science and the right builder. This is exciting!
DK, ASE Master Tech Retired.
My 421 build ,23° cnc AFRs custume cam ,ported 2925 ,belt drive ,manual fuel pump ,crank vac ,4150 1000 cfm tuned to and got 731hp @ 7500...573ft @ 5700 on alcohol.
Thank you for even mentioning BSFC! I've watched countless engine builds and dyno runs but no one ever mentions this measurement nowadays, and it seems a great way to compare the relative efficiency of different builds.
Thanks David for the invaluable content. I successfully built my first engine (10.2:1 SBF 332 ) never dynoed it but I know it’s good. Next build I’m planning a 427 Windsor. Looking forward to all your knowledge to implement in my build.
Crazy awesome torque/displacement ration... WOW!
Your videos are like a breath of fresh air. Thank you so much.👍
Love to see the best you could get out of a 350 chevy.
I've been searching through his videos for this. I Love the history and reputation of the sbc 350 and want to keep it as such, regardless of CI hoopla, as I Fully understand more cubes more power, etc. I just wanna see Mr. David'$ Best Streetable sbc 350 build. Ya know he's bound to have one in that genius mind of his.
That is one serious small block wow and a pump gas motor at that I wonder how it would do on E85 or race gas very impressive. Good job guys Rick 427
Thanks David for all your videos and information sharing. 👍
I did the intake manifold on this build. It was originally done by Wilson and then worked on by someone else before I got it. I had three days to work on it. The apex of the turns was min cross section so I needed to work on taper quite a bit. D.V. asked for a specific texture. I spoke to Terry and we had the idea to texture the outside as well. Manifold was coated inside and out with different coatings. Is it possible the brake specifics have some thing to do with the internal port texture? The plenum got a full rework. I needed to do some epoxy work because this manifold was drilled and welded for fuel injection in a past life.
Check out Speier Racing Heads Burr finish. Ive run his 23 degree sbc stuff for years. Darin Morgin says its the bet 23degree head for sbc on the market! Burr finish is what he did when he fully ported my BMP intake and Profiler heads. 715 hp
@@tomhanson4153 These were a specific burr finish. I know Chad and he does excellent work. D.V. asked for a medium burr finish. Not my real rough finish. Thanks
Meaux did mine with a ice skate and a brick. Morgan did some that looked like 60 grit. Both are excellent.
Kudo's to you David, love the way your doing these videos by stopping and explaining everything the we can understand it !
Thank u DV I've been a huge fan for many years & read everything u put out keep up the great content ps Andy is a great addition 👍
Absolutely stunning results. I would like to see some details on the external oil pump.
Designing an external oil pump that separates air from the oil is tricky, but 4 rotors squeeze into two smaller ones with an air bleed ramp near the outside of the circumference seems to work on the two I have seen, just like fuel pumps. The ACDelco EP379 has (2) 44mm rotors with a ramp leading to a hole to force air out before it cavities. These are the same forces that destroy boat props when they have higher HP.
The water boils at ambient temperature when a high enough vacuum is apply.
DK. ASE Master Tech, retired.
@@deankay4434😮😢😢 11:55
Very interesting... thanks DV
I believe the greatest variable in the estimation was the cam.
Hi Don I have been racing flat track motorcycles since 1969 and have had my own shop since 1980 I build a lot of 450cc singles if I could just stay at the porting bench I would be very happy but being a one man shop it’s a bit hard I’m sorry to say but I just saw your videos for the first time and I sure wish I found you a long time ago I can’t stop watching them thank you so much for Sharing your information I can’t get enough of it hope you have a great New Year and thank you again
awsome torque keep up the good work thanks again
Always great content thanks for sharing
Great video Mr. Vizard
ThT is some really serious horsepower for a small block street motor that runs on pump gas wow I wish I knew a tenth of what you know. Great video
gotta love the BSFCs!
Thank you for another great video Mr. Vizard!!
Thanks Dàvid.
Amazing build.
Thank you for the info, im planning on a 383 build and this is going to help alot
Fantastic Dave.. I've been an avid reader of ALL your books for past 30 years and have applied things learned to real world application. In fact.. I'm the guy that did the powder work on the AED carb that is on the cover of your Budget BBC book. Keep up the great vids Mr Vizard! God Bless.
Awesome, thanks for the video, all the best to yous and your loved ones
That's really potent! I really like the insights all throughout your videos; I even notice things you don't mention and go, "Huh. Interesting."
I'm at the pencil-and-paper stage of building a 327cid Motown LS for my '63 Impala. I like the idea of the drop in SBC fit coupled with the free-breathing performance of that LS top end. Might take me until next Christmas to rake together the capital tho. LOL!
Aftermarket sbc heads flow better than stock ls heads. Don't saddle yourself with the oddball block and specific intake design. A regular old sbc can run great. You can use aftermarket multiport fuel injection to get great fuel economy too.
@@EricErnst Thanks. I was kinds still on the fence about it. The original 327 & Powerglide are long gone & I was mulling a remotor back to 327cid, but more formidable than OEM. Kind of a purist thing, 'cuz it's badged that way. I bought it with a 350 running Vortec heads, street-strip cam of unknown origin, gear drive, MSD 6A ignition, Edelbrock RPM Performer intake, 750cfm 4160 list 3310-6, kitted TH350 with a 1500 stall converter, and 3.55 rear end. Bottom line: I've got lots to work with & just really need to ice up a plan for what I want this car to be.
@@darrinrice367 I was pretty excited about the motown LS block when I first saw it. The dart blocks are motown for SBC stuff and Warhawks for LS stuff. I think they missed a great opportunity to call it a Mohawk block.
I think their biggest drawback is that the intake has to fit LS heads and keep the distributor hole. That means the intake manifold selection is VERY limited and specific to only dart castings.. which are probably in scarce supply and very pricey. Like I said, I loved the concept of it when I first saw the motown LS stuff.
I've got a pair of trick flow super 23 175cc heads on my 350. They have tiny 56cc chambers to bump compression. They flow 242cfm@.500" and 245cfm@.600". Through 1.94 valves. With tiny 175cc runners. Port velocity is high with the tiny ports. LS1 heads flow 237@.500" and 243@.600" wirh a 200cc intake runner and bigger 2.00" valve. And a 67cc combustion chamber that lowers compression ratio.
If you can swing it, get afr cylinder heads they offer a 185 and 195 option and flow much higher.. along with their higher end stuff. The trick flows that I'm running will support ~500hp at the crank depending on other parts. That's plenty for a street build like your 63 impala. I've got a baby roller cam with very short duration that puts peak power around 406hp@5500 rpms. 450lb-ft@3000 Top of the page cam. 202⁰/212⁰@.050". .585"/.581" lift. That's 1⁰ off of the stock 400hp LS2 camshaft of 203⁰/211⁰@.050" but it has lower lift of .424"/.421". I can bring the idle down to a lopey 400rpm on my holley sniper unit. I usually have the idle at about 750 for street driving, a little closer to my converter. That's all with simple bolt-on stuff on a 1990 350 block. You don't need a trick aftermarket dart block for your setup. Unless you want to be the only guy on the block with one at a car show. Good luck with your build!
The yellow cheque is my favourite shirt.
Hello David I restore cars and work on muscle cars I have some of your books I’m also very glad to have found this series and has helped me immensely I love physics and understand The principles of engineering I’m a self-taught mechanic self-taught body man and self-taught painter I’ve been building Rochester carburetters for 40 years in the process of building a flow bench ordered a few sets of small blockheads would’ve worked well not excessive boarding because I understand where reversion happens so mostly just clean ups thank you again for your programs you’re helping a lot of people God bless stay safe
I really love all the Terminator style music.
Can tell Dude knows his shit!!!👏👏👏
We used to have that on our big blocks with rec port heads in the 80s
I always wondered about flow numbers vs flow volume. Now I know. Thank you!
Thank you for your knowledge.
He's a true legend!
Great job david!!! Helluva pump gas engine.
Spectacular!
I really appreciate you sharing your knowledge/experience and stories as it makes me realize how much I really don't know. I wondered if you ever done any work on the Chrysler polyspherical cylinder heads of @1957 ?
I have never heard you say you "liked anything" just cause it looked "fancy"! I have another reason to buy parts! :)
I’m the man at logging on at the last 2 minutes 😂
Looks great
Outstanding my friend
The legend has spoken!I know a good bit but wish I knew half of what he knows.I see all these LS swaps and hellcat motors where they rebuild the motor anyway then fight with computers and tuning and all that garbage and I'm still a firm believer in the sbc strokers matched with the right cam heads intake carb ignition system etc.I believe one of his carburated motors will blow all that trash off the track all day long.Im not worried about building a race engine for the street,I don't race on the street,drop that little 421 in s10 or a Monza or something with a good two speed power glide and some 3.73s or 4.11s and get it to hook up and I'd race hellcats title for title anytime they wanted to!
Love your holley books 😊
Thank you for the video
If you were gonna build a engine that was gonna be a work horse in a plow truck, would you build it like a race engine? My boss is 85 years old and he bought a 72 chevy with a stock small block 350 off the show room. He's been running it as a farm truck, plow truck for all these years and she's still pushing snow. I've got a 78 bronco with a worn out 302 that I would like to turn into a plow truck. I guess I'm wondering how do you build a strong engine, maybe not necessarily a fast engine?
We can do that - remind me about March that I said we would!
That would be a perfect engine for my Corvette
Excellent videos
Awesome content, makes me want to make a phone tremendously awesome engineered build...
Power is in the heads always will be that's why the hemi was so good of coarse it has to be strong or it won't stay together
Great vidja 🤙🏼
Sorry DV but not a street motor. Dam good TQ and hp . Killer setup. Love it. I really can’t see driving this down the road at those kind of rpm. Would be a really cool car ( nova) 6 speed,4.56 rear end . 6,000 TQ? Wow. I can’t get that out of my mind winding a motor up that much. Most of the time I run 2200 to 5000 on the street. Would be cool to have a setup like that but man I am going to get to know the cops! Lol ! Can you do a mopar La like that? Nice out of the box. You have a really good Xmas and new year DV and hope to see a killer 318 coming up soon. Good luck on the project!
I would disagree a low gear makes it get into a high RPM quick more like 6500 RPM light to light 456 gears or lower the 12 -1 compression for sure is not a 92 octane set up lol a street set up at the most would be 11-1 more like 10-1
Nearly 500 lbs tq @3000 rpm is exactly what's needed. Weight of car & rear tire dia. is of greater importance. Early Nova or 70's Chevelle
You can drive just about anything on the street if you put the right fuel in it
@Darrell Somers 11.25:1 on a pump gas premium LS7. Actually mix 50/50 premium and mid-grade (89 octane mid-grade/93 octane premium) for pure highway driving. Enough cam duration will lower combustion chamber pressure/dynamic CR. 43,000 miles on it since 2014. Drive it to Florida from Michigan every Fall, back to Michigan every Spring, no issues at all......
@@milojanis4901 yep, cam duration will help Lower compression. Long duration cam in a motor with only 9.to 1 com will feel like a sick dog.
Hope that fits under the Christmas tree .🏁🏁
Great Content!🙏
incredible very impressive
DV, the engine god🏁
Big money build.
David, I would like to see a build using AFR's 245 23deg sbc heads.
Awsome I've said for years big power is in a chevy small block
Would love to see this done on a BBF 460 build.
Wow, impressive
Thank you for the video stout numbers you have done.
You have done several Chevys and Ford engine builds but would you do a Pontiac engine build??
I know the Pontiac engine is much more expensive to build but I would like to see how much you can rip the 400 cid engine.
Good information.
🥝✔️...like McDonald's...I'm Lovin' It
I support this content.
Boy talk about one stout little engine. My question is is how would that engine respond in an application for towing? Torque is obviously not a problem yet I wonder how would it respond to pull in a heavy load at say 2500 RPM down the highway. Can you comment on that DV? I understand this particular build may not be suited to that application necessarily, However I know torque at the end of the day is what gets the job done. If that wasn't the case over the road trucks wouldn't use diesel engines at generate gobs of torque
At the end of the day it's not only the torque that matters in a towing rig but the fuel it runs on. That engine runs on 93 octane plus an octane booster of some sort. This is fine for a car driven around town or to the track and back but it's just not doable for a truck regularly used for towing. You'd need to add octane by other means like water injection.
E85
@@johnflett2531 why is all of additional octane additive needed?
Over the road diesel engines are way more fuel efficient and have longer service intervals.
Power is power and gearing can make anything work, but what you are talking about is almost nascar levels of cylinder pressure for thousands of hours.
Once you start throttling a spark ignited engine its efficiency falls off.
There is some lighter duty commercial vehicles with gasoline engines, think the 7.3l ford pushrod engine, but these are the exception.
As soon as you build a gasoline engine that can do the same things as a typical commercial diesel it ends up being almost as heavy, almost as expensive and burns way more fuel.
Edit. This is a 421 cube, 4.155x3.875, small block. If you went to a big block envelope just for better coolant flow and better internal geometry you end up really close to 427T bbc dimensions.
You could build a 427bbc to make 600hp in a street driven application no prob. Can you do it with a 0.550 hydraulic roller and cast exhaust manifolds?
@@timothymroberts2949 ruclips.net/video/v9R1dh-oTYU/видео.html DV has on screen "4 gallons 93 octane and 1 gallon race gas". This is because of the compression ratio.
I'd bet a real good octane booster such as the stuff VP sells would work instead of the race gas but that stuff costs almost as much as mixing race gas. If I had that engine I'd probably run it on 100LL (aviation fuel), but as Scott Sutherland said E85 is a good choice too. But wouldn't run E85 in a towing vehicle because you can't get it everywhere. To be clear though, this motor would be great in a 1/2 ton pickup that could tow. I just wouldn't use it to tow across Texas because it'd cost too much.
To make this engine good for towing you'd need to lower the compression somewhat, that would change the cam spec and lower the power band. You'd want smaller heads too for the lower operating range, by this time it's a completely different engine build. Which is fine, DV has SBC towing engine recipes in his how to build horsepower book that work good for the job.
I’d love to see you build a MBE top end sbc and see what you could get out of it
Hey John I did get 900 hp from a 427 with a 320 cam at 14.1 comp on hi test back in the 2010. N.a. 8000 rpm.
thanks david
I'm watching your build now I build a 700 horsepower 383 stroker for my 69 Chevelle and I'm also going to be feeding it to 350 shots of nitrous all built at home by me the only one that has ever touched this car nice build
Have to disagree about not polishing the floors and walls of the ports. In this application above where fuel atomization is a concern for guys running annular boosters and only 5-psi of fuel pressure then sure, keep it rough. But with fuel injection running upwards of 45-psi of fuel pressure, the atomization is there the moment it leaves the injectors…
I'd like to see this with a small block mopar.
INSANE #’s!!!! N/A are you kidding me.Peak torque on A single plane,,,there goes that theory 😂😂😂.
Excellent
Great video as always!
Is there a forum or email where someone can ask questions about their build and why it may not be making as much power at the proper rpm?? Struggling with a high compression, big cam, big head, 383ci SBC. Won't make more power after 6500rpm and is only making around 550hp maybe!! ??? New to SBC engines and have put a lot of $$$ trying to figure things out so any help would be greatly appreciated!!
That's excellent!!
For a marine 454cbb to get over 700hp line naturally aspirated engine. what you recommend, in parts?
It would be nice to see more mopars
Is it possible the HP at 6400 rpm onwards, is a little problem with Pushrods and Valvesprings... Valvetrain... ???
DV, I'd love to see how you would build a DZ302 Cross Ram transam engine!!!!! Future videos???!!!
Dave
Do you have any plans to do a video on hp tips on vintage vw's Beetle type 1 engines?
One thing ive learned over the yrs is a msd box will take a dump at the worst possible time, ill stick with my trusty ol' vacuum advance hed distributor.
THE TRUE TEST OF THIS ENGINE SHOULD BE. ENTER IT IN ENGINE MASTERS. BY ITS CLAIMS IT SHOULD EASILY WIN AND DETHRONED THE FORDS.
Not really the best test… fords are heavier than the Chevrolet are they not..?
have you experimented with E85 to avoid the need for race gas?
Yes.
Thanks for the 421 sbc there not much out there for info would like to see one of your videos on this engine like you did on the 383 thanks