LS1TECH - Camaro and Firebird Forum Discussion

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-   -   Compression Ratio!!????? (https://ls1tech.com/forums/generation-iii-internal-engine/412050-compression-ratio.html)

01Blackerado 11-20-2005 11:00 AM

Compression Ratio!!?????
 
I'm trying to figure out what my exact CR is with my new motor setup!! Is there a formula that i can use to find this out? I have Stock CC LS1 heads on a 3.903 bore. The pistons I used are -30cc's with a 4.000 stroke and 6.125 rod length. Thanks for any help you offer.

Nick

treyZ28 11-20-2005 11:27 AM

google

there are a thousand caculators out there

TAQuickness 11-20-2005 12:06 PM

I'll save you the trouble

J&J Speed Shop 11-20-2005 12:15 PM


Originally Posted by 01Blackerado
I'm trying to figure out what my exact CR is with my new motor setup!! Is there a formula that i can use to find this out? I have Stock CC LS1 heads on a 3.903 bore. The pistons I used are -30cc's with a 4.000 stroke and 6.125 rod length. Thanks for any help you offer.

Nick

Okay rough guesstimate is - 8.5:1

That is figuring 66cc chamber heads, .051" COT gasket 3.910 gasket bore and a piston .010 out of the hole. You really need to use exact figures to get more accurate, but my figure is close

01Blackerado 11-20-2005 02:16 PM

Thanks guys!!


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