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Thread: compression on pump gas
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10-18-2006, 11:58 AM #1
- Join Date
- Aug 2005
- Location
- santa ana
- Age
- 38
- Posts
- 141
metallic blue- 1969 camaro
compression on pump gas
im getting a 350 that is 9.5:1 compression. im replacing the cylinder heads with the vortec style heads. my problem is that the way the vortec combustion chambers are designe, they raise compression. does anyone know ho much they raise the compression. and what is the highest compression i can run on pump gas 91 octane, this is goin to be my daily driver. thanks
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10-18-2006, 12:25 PM #2
- Join Date
- Oct 2006
- Location
- Iowa
- Posts
- 44
black- 1993 Vette
you will have to know the differance in combustion chamber cc's between the head I can't remember the fomula for CR but you can find it on many sites
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