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Determing compression ratio

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Old 03-08-2007, 01:06 PM
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Default Determing compression ratio

Looking for some feedback on what my compression ratio should be..

stock cube 346 LS1
Mahle -4cc pistons
PRC LS6 CNC Heads (milled .030)
Cometic Head Gaskets (.040)

Last edited by Vcious04; 03-08-2007 at 01:15 PM.
Old 03-08-2007, 02:46 PM
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Im getting 10:1 with this calculator.

http://www.c5frc.com/calculators/Com...Calculator.htm
Old 03-08-2007, 03:47 PM
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I get 11.18, assuming your pistons are .006" out of the hole and your heads start out at the stock 64cc chamber, prior to milling.
Old 03-08-2007, 03:49 PM
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how many CC's are the heads?
Old 03-08-2007, 04:00 PM
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I messed up. i used the stock ls1 head to start with.
Old 03-08-2007, 04:49 PM
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Originally Posted by braap
I get 11.18, assuming your pistons are .006" out of the hole and your heads start out at the stock 64cc chamber, prior to milling.
Thanks for the info guys.




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