PS Adam's Vette is still the fastest car I've been from a roll. It's pretty ridiculous. My guess, and it is a guess, is well over 500 to the wheels and whatever his weight is, plus fairly short gearing AIR. Same as my Vette though, I don't think it'd be particularly fast in teh 1/4 because the suspension is all wrong to launch worth a shit. It'd be like 12 @ 130 or something stupid like that.
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Thanks? Haha.
Compression has always been this low. Even before the motor was first fired. I've often been cautioned by gear heads about it. But I have low compression, and fatty NA intended overlap. I really need a blower cam... and by B Day is 21 days away! ...just sayin :p Engine makes power, doesn't burn oil, and the compression is consistent, it's fine. |
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What's your static compression, piston to head clearance and cam specs? The Chevelle has decent overlap with 246 duration at .050 and a 110 LSA.
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Compression is like 9:1, cam is 110 246 248? Or something... |
Piston to head, don't remember. I think my pistons are like .02 down and the HG is .05. So prob .07. Some people cry about quench but the thicker HG/ lower CR was more important to me. AFR and speed talk tells me quench is of little consequence when the boost does the swirling.
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.070 isn't great but the Cobra is at .053 if I remember correctly. Even with the old 302 setup which had a compression ratio around 8.7-8.8 and a cam that had 110 LSA with 220 @ .050 it still cranked 150psi. Something isn't right. Does your car run good, sure. Could it run better, most likely.
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Quench alone shouldn't change a compression reading. 9:1 with a 110 should produce the same measurement no matter how that air is swirling around in there. Guy, yes, compression test was the same before and after break in. |
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I don't have any one thing I can say it would be, however I do know that 9:1 should make a minimum of 130psi with a 110 lobe center. Are you positive you calculated the compression properly? What df the heads CC out to? |
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