SBC combination critique

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CGT
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Re: SBC combination critique

Post by CGT »

Newold1 wrote: Fri Feb 15, 2019 3:01 pm I notice a lot of posters come in on a thread subject like this without starting at the beginning and reading the previous posts.
Coming from the guy that thought the OP was wanting to run a 30° valve face on the 30° topcut of a 45° valve job? cmon.


Does it matter anyway? It's obvious to me at this point that the OP is none other than the great "Chaz Speards" himself . Everyone knows he can never truly be "out" #-o
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Re: SBC combination critique

Post by Orr89rocz »

Fwiw

Plenty of guys making around 400 whp using afr 195’s on 350-383’s. Some good bit over 400. Which is around 500 flywheel.
My 383 was 2.05 valve and went 119 mph at 3450 lbs in 2500 ft da. Not bad, simple hyd roller street build

Another guy on this site had a 369” sbc, believe it might have been a 3.625 stroker car? Have to search but a jones 233 hyd roller and ported afr heads that cc’d out to 222 cc i believe it was made 535 on engine dyno, 420 whp thru auto. I dont think his valve was over 2.05
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Re: SBC combination critique

Post by CGT »

Orr89rocz wrote: Fri Feb 15, 2019 5:04 pm Fwiw

Plenty of guys making around 400 whp using afr 195’s on 350-383’s. Some good bit over 400. Which is around 500 flywheel.
My 383 was 2.05 valve and went 119 mph at 3450 lbs in 2500 ft da. Not bad, simple hyd roller street build

Another guy on this site had a 369” sbc, believe it might have been a 3.625 stroker car? Have to search but a jones 233 hyd roller and ported afr heads that cc’d out to 222 cc i believe it was made 535 on engine dyno, 420 whp thru auto. I dont think his valve was over 2.05
To the OP, whoever that may be..., sometimes it's not necessary to complicate things. You have chosen a 17th place engine out of 20 as a model. The engine that 89roc mentions(369 ci) here making 535ish on the dyno would only need to make 490ftlbs to have beaten your example in that contest you linked...easily doable. No 11.5:1 or .800 lift necessary.

I understand its compelling and interesting to try something different, but in this case there are at least 16 better examples just within the one link you posted. And your goals could be met and your example exceeded by simply building a "Jegs" motor, simply ordering stuff and bolting it together as is, especially with a few more cubes as mentioned by others.
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Re: SBC combination critique

Post by Orr89rocz »

I found it. I thought he had ported heads but i think they are the comp ported versions of 195’s
https://www.thirdgen.org/forums/tpi/552 ... added.html

https://www.thirdgen.org/forums/tpi/552 ... id=1&pid=5
As some of you know I'm building up a 369sbc motor. It has the AFR 195 heads and a Mike Jones 233/233 camshaft. For the dyno I used a Victor Jr. intake manifold and a Holly 750hp carb. I'm going to have the Victor Jr. manifold flowed to see how much cfm it will flow. I bet it is less than my ported TPI First intake. Here are the results.

Best dyno numbers with the long tube headers was 526 horsepower at 6500 and 471 torque at 5200rpm.

Best dyno numbers with my custom chasis fit short tubes was 524 horsepower at 6500 and 466.5 torque at 5300rpm with the same conditions.

We switched to Mobil One and let the intake manifold cool off but kept the oil hot and we managed to squeeze 535 horsepower out of the shorter tube headers. This motor only likes a total of 30 degrees timing.
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Re: SBC combination critique

Post by Newold1 »

Orr89rocz wrote: Mon Feb 18, 2019 10:18 am I found it. I thought he had ported heads but i think they are the comp ported versions of 195’s
https://www.thirdgen.org/forums/tpi/552 ... added.html

https://www.thirdgen.org/forums/tpi/552 ... id=1&pid=5
As some of you know I'm building up a 369sbc motor. It has the AFR 195 heads and a Mike Jones 233/233 camshaft. For the dyno I used a Victor Jr. intake manifold and a Holly 750hp carb. I'm going to have the Victor Jr. manifold flowed to see how much cfm it will flow. I bet it is less than my ported TPI First intake. Here are the results.

Best dyno numbers with the long tube headers was 526 horsepower at 6500 and 471 torque at 5200rpm.

Best dyno numbers with my custom chasis fit short tubes was 524 horsepower at 6500 and 466.5 torque at 5300rpm with the same conditions.

We switched to Mobil One and let the intake manifold cool off but kept the oil hot and we managed to squeeze 535 horsepower out of the shorter tube headers. This motor only likes a total of 30 degrees timing.
Did he ever run the engine on a dyno with the EFI-TPI setup?

Did he post those dyno results?
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Re: SBC combination critique

Post by Orr89rocz »

https://www.thirdgen.org/forums/tpi/601 ... er-12.html

He did go to a ported afr 210 head that measured 222cc and 2.46 sq in csa. Flowed 305. The old 195’s flowed 285. The efi system flowed I think 335 best, more than te vic jr. Same cam as before.

The big efi base and large runners designed for harmonic wave did exactly as predicted. Made peak power in the 6300-6500 range then fell off quick after 6500. Dyno’d 423 whp with fuel curve abit off but not bad.
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Re: SBC combination critique

Post by Newold1 »

Think you may have posted the wrong link to the EFI upgrade as the link posted does not involve that subject?
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Re: SBC combination critique

Post by Sumtingwong »

CGT wrote: Mon Feb 18, 2019 9:49 am
Orr89rocz wrote: Fri Feb 15, 2019 5:04 pm Fwiw

Plenty of guys making around 400 whp using afr 195’s on 350-383’s. Some good bit over 400. Which is around 500 flywheel.
My 383 was 2.05 valve and went 119 mph at 3450 lbs in 2500 ft da. Not bad, simple hyd roller street build

Another guy on this site had a 369” sbc, believe it might have been a 3.625 stroker car? Have to search but a jones 233 hyd roller and ported afr heads that cc’d out to 222 cc i believe it was made 535 on engine dyno, 420 whp thru auto. I dont think his valve was over 2.05
To the OP, whoever that may be..., sometimes it's not necessary to complicate things. You have chosen a 17th place engine out of 20 as a model. The engine that 89roc mentions(369 ci) here making 535ish on the dyno would only need to make 490ftlbs to have beaten your example in that contest you linked...easily doable. No 11.5:1 or .800 lift necessary.

I understand its compelling and interesting to try something different, but in this case there are at least 16 better examples just within the one link you posted. And your goals could be met and your example exceeded by simply building a "Jegs" motor, simply ordering stuff and bolting it together as is, especially with a few more cubes as mentioned by others.
And you would know I assume! What a joke! And I guess the 407 wouldn't have done a lot better with a slightly different cam either!

Your right, just go with the AFR's

Waste of bandwidth....Im done here!
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Re: SBC combination critique

Post by Orr89rocz »

Newold1 wrote: Tue Feb 19, 2019 11:13 am Think you may have posted the wrong link to the EFI upgrade as the link posted does not involve that subject?
No its the efi project he did to eventually dyno with. It made 423 whp. Atleast the link works for me. What does it show for you? The results post is down the page some
https://www.thirdgen.org/forums/tpi/601 ... ost5121677

Tpi long runner project, page 12, post 342
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Re: SBC combination critique

Post by Warp Speed »

He's "Out"! :lol:
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Re: SBC combination critique

Post by groberts101 »

I couldn't care less who the OP is or how smart and successful some of the guys relpying here are.. or think they are. Considering recent events and the fact this forum appears to be on thin ice in regards to longevity, there is absolutely no reason whatsoever some of these posters should be allowed to contribute towards this place backsliding right back into the same old petty and useless back and forth crap that Don was becoming more and more frustrated with and ultimately trying to eliminate before his untimely passing. This ain't yellow bullet.. show some respect and try to have a little class.

This place most definitely needs fewer childish petty assholes who won't actually contribute much to a discussion and instead prefer to just come around to stir up as much stink as possible and then run off laughing like teenagers by posting stupid emoji faces. What a joke.. hope the new management quickly straightens things out or just plain bans them. Smartest most experienced world record holders or not.. contribute in a constructive manner or just plain go away to stir pots somewhere else where that bs is accepted.
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Re: SBC combination critique

Post by groberts101 »

And @OP.. that motor should hit close to or slightly better than 500 while still making decent torque under 3,500 rpm.
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Re: SBC combination critique

Post by slo-svt »

Sumtingwong wrote: Tue Feb 19, 2019 12:07 pm
CGT wrote: Mon Feb 18, 2019 9:49 am
Orr89rocz wrote: Fri Feb 15, 2019 5:04 pm Fwiw

Plenty of guys making around 400 whp using afr 195’s on 350-383’s. Some good bit over 400. Which is around 500 flywheel.
My 383 was 2.05 valve and went 119 mph at 3450 lbs in 2500 ft da. Not bad, simple hyd roller street build

Another guy on this site had a 369” sbc, believe it might have been a 3.625 stroker car? Have to search but a jones 233 hyd roller and ported afr heads that cc’d out to 222 cc i believe it was made 535 on engine dyno, 420 whp thru auto. I dont think his valve was over 2.05
To the OP, whoever that may be..., sometimes it's not necessary to complicate things. You have chosen a 17th place engine out of 20 as a model. The engine that 89roc mentions(369 ci) here making 535ish on the dyno would only need to make 490ftlbs to have beaten your example in that contest you linked...easily doable. No 11.5:1 or .800 lift necessary.

I understand its compelling and interesting to try something different, but in this case there are at least 16 better examples just within the one link you posted. And your goals could be met and your example exceeded by simply building a "Jegs" motor, simply ordering stuff and bolting it together as is, especially with a few more cubes as mentioned by others.
And you would know I assume! What a joke! And I guess the 407 wouldn't have done a lot better with a slightly different cam either!

Your right, just go with the AFR's

Waste of bandwidth....Im done here!
Weren’t you already out and or done here once?
Pure logical thinking cannot yield us any knowledge of the empirical world; all knowledge of reality starts from experience and ends in it.

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Re: SBC combination critique

Post by In-Tech »

I don't think this combo will have any problem making 500fwhp either, regardless of seat. However, with the 30 degree seat it will not run very well with mufflers unless the exhaust is WELL situated, low lift flow does not necessarily mean low rpm torque with this cam. The EFFECTIVE overlap will be much higher with the 30 degree seat vs a 45, imo I would run what he has except with a 45 or 50 degree seat. 50 being preferred.
Heat is energy, energy is horsepower...but you gotta control the heat.
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Re: SBC combination critique

Post by ClassAct »

To the OP. There is nothing wrong with your combo other than what I noted. I'd never use that big of a valve and a 30 degree seat. Use a 2.055 valve, unless someone has blown the bowls out and use a 50 degree seat.

You can easily use 11:1 on pump gas and I would. No reason not to. The other thing I don't like is the hydraulic roller. I'd rather see you use a solid roller with a good love designed for street use.

You can easily make 500 HP under 7000 RPM and drive like a cream puff.
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