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Old 03-22-2011, 03:16 PM
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compression ratio on 350 chevy

Can anyone tell me what compression ratio i'll get with +030 flat top pistons with 4V/R using 64cc heads? And roughly what horsepower it will have?
using a edelbrock performer plus cam.
Thanks

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Old 03-22-2011, 11:39 PM
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Use Summit's compression ratio calculator. Click this link, scroll down, click on the Compression Calculator link. OEM deck height is .025". Even if you have flat top pistons with valve reliefs, you need to add cc's. The 4 eyebrow relief style usually contains 4-6cc. OEM head gaskets are around .040" I believe.

http://www.summitracing.com/parts/FEL-1003/
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Old 03-23-2011, 01:44 PM
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Deck height .025. head thickness is .015. thanks
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