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: What is my compression ratio?? atldc May 12th, 03, 07:02 PM Heres the specs on my rotating assembly: Piston: Flat Top @ -7cc, Comp Ratio: w/58cc Head 11.7:1, w/64cc Head 10.9:1, w/76cc Head 9.6:1. Only thing is I have 74cc AFR 195 heads and its bored .040 over instead of .030. So would anyone know my exact CR? Toad May 12th, 03, 08:00 PM Go to this link, I think everything you need to know is there. You do need Excel to run it though. Hope this helps. graemlins/thumbsup.gif http://www.eden.rutgers.edu/~vath/327/compression.xls sik68 May 12th, 03, 08:23 PM The comp. ratio will also be affected by the dimensions of the gasket you are running. There isn't much difference between say a .031 gasket and a .038 gasket, but if you are looking at a .012 steel gasket, then it definately comes into play. Once I get onto my home computer, Ill punch in the numbers tonight. JIM68 May 14th, 03, 06:06 PM did you figure it out? atldc May 15th, 03, 01:23 AM yes...i believe it is 9.6. Thanks jacket May 15th, 03, 02:22 PM What deck height should be used on a standard block for compression calculation? | ||