compression question

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11-14-2010, 10:37 AM

BIGB4015

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compression question

Can some one tell me what the compression ratio would be on a stock bottom end LS1 with a 64cc head and a 0.40 cosmic head gasket?

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11-14-2010, 04:49 PM

ShevrolayZ28

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Quote:

Originally Posted by BIGB4015

Can some one tell me what the compression ratio would be on a stock bottom end LS1 with a 64cc head and a 0.40 cosmic head gasket?

From the post linked below I see Tony Mamo from AFR stating that 63cc with 0.040" gasket is 11.0:1 SCR... so with a 64cc chamber I estimate that you would be right around 10.75:1 SCR...

https://ls1tech.com/forums/generatio...rations-3.html

Or you could try googling for a compression calculator if you're still curious.