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Old 06-25-17, 08:08AM   #106
Hooter
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Originally Posted by Gach View Post
782 hp....that's awesome love the torque numbers. Perfect street motor ! I think it's going to be allot happer with that stroke. You really didn't lose a whole lot of power, what 18 or so hp. You got to be super stoked about that.
The old motor made 820 at the exact same rpm, so it lost 38 hp. Agree this motor will better fit the street putting a lot of miles on it. Piston speed will be way down compared to the long arm crank.
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Old 06-25-17, 01:07PM   #107
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Yeah I couldn't remember the old hp number, thanks for sharing. Good show though on how stroke effects hp.
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Old 06-25-17, 08:42PM   #108
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Some times, I don't know what the difference in adverage hp was between the two different stroke motors...was, but you could very well run the same ET or damn close, I've seen it happen, not that your overly concern with that. Obviously you just want a good reliable combo. Still 782 hp on pump gas is serious hp.
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Old Yesterday, 12:50AM   #109
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turbo louie
That article from victory library is very good.
That site is a wealth of information.

Iskendarian's piece on the subject basically says the same thing, just not in so many words.
I thought so . glad you liked it. I based my new build on those theories.
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Old Yesterday, 06:30PM   #110
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I am trying to figure out how much power I might loose by using pistons that do not have a dish that mirrors the chamber ?
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Old Yesterday, 06:46PM   #111
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And keep the CR exactly the same?If me I would call Joe Sherman.He has dynoed virtually any kind of engine changes and can give you real world experience.He also has a son whose car runs really well and is always looking for just the "little"Xtra.Might not be pontiac specific but a engine is a air pump.Tom
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Old Yesterday, 08:09PM   #112
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Well,I bought the pistons from a guy who was going to run E heads. I have E heads.
The pistons have one intake and one exhaust valve relief and the dish is to one side, just under the valves. Not a generic "all around" dish.
Maybe they are not so bad.

Tom, the static CR has yet to be determined. Its going to be as high as I can get CA 91 fuel to run without detonating. Piston should be .015 in the hole, that is just an extension of the chamber. Head gasket thickness will determine the CR.
Its going to be 11.0 Minimum. More like 11.5-11.75
I will let the experts, Scott Brown and Marcella have a big say.
Going to have some of their stuff in the build.
I dont port heads and I do not pick custom camshafts. There are reasons I am willing to pay for their high dollar parts. Expert advice at the top of the learning curve.

Last edited by Dragncar : Yesterday at 08:20PM.
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