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Old 06-25-2004, 09:11 AM   #1
dubie
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Join Date: May 2000
Location: Flin Flon, Manitoba, Canada
Posts: 8,853
figuring out compression

How do you figure out the compression ratio of an engine? I am running a 350 with stock pistons, moly rings, some 60 CC chamber heads from a 305, stock intake and 750 cfm Qjet. I was told by a couple guys that I have to run 92 octane because of the heads I chose. Can anyone fill me in on how you calculate the compression
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