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

 

google

there are a thousand caculators out there

 

I'll save you the trouble

 

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

 

Thanks guys!!