59cc heads what is the compression ratio

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Oct 8, 2007 | 07:35 PM

skeeters65

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59cc heads what is the compression ratio

On a 2002 LS1 F-Body

Thanks

64cc is stock and is 10.4 to 1 right??

Oct 8, 2007 | 10:03 PM

JScamaro

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Depends on what size your head gasket is and what cam you are running (advance).

Oct 8, 2007 | 10:33 PM

hammertime

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From: Smithton, IL

Stock LS1 heads are 66.67cc nominal chamber volume = 10.1:1
LS6 heads are 64cc nominal chamber volume = 10.42:1
59cc heads with stock .053 gaskets = 11.09:1
59cc heads with .040 gaskets = 11.47:1

All compression ratios calculated from the published 10.1:1 LS1 ratio, using the difference between volumes.

Also, camshaft selection and degreeing will determine your dynamic compression, but the static compression is fixed by the volumes at TDC and BDC.

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