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Old 10-20-2019, 09:01 AM
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footjoy footjoy is offline
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Join Date: Oct 2009
Location: KC
Posts: 977
Default How do they come up with this Compression Ratio?

This comes from Ron's Pontiac Page. I have a 400 with 15 heads and get 8.8 and maybe 265 hp. I don't know anything about the 66 cam. what am I missing?




compression HP Heads Cam

YF FullSize 400 10.5:1 340 Auto 15 66 4 bb

Thanks
Greg


Last edited by footjoy; 10-20-2019 at 09:15 AM.