Author Topic: Compression Ratio?  (Read 1548 times)

Offline 1973 500

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Compression Ratio?
« on: December 05, 2003, 04:46:00 PM »
I own a 1979 K10 with a 400 small block.  From what I could find, it would have a compression ratio of 8.5:1 from the factory, and 642 heads with 78cc combustion chambers.  I want to bump compression for more power.  Wouldn't 64cc combustion chambers put me up around 9.9:1?