I'm looking at buying a set of heads on the for sale board, and had one question about the heads, I have a stock rebuilt 350, so figure the crappy 8.5 : 1 compression with the stock 76cc heads. If i were to swap on this pair of 67cc heads, what would my compression come out to be? i know there are other factors, gasket thickness and all, but a ball park figure would be good, because i want to be able to run cheap gas and not have a 10:1 ratio or something like that, the 92 octane bills for my Buick are high enough. Thanks Everybody! Leland aka RaisedK5 "Of all the things I've lost, I think I miss my mind the most!" "Are the voices in my head bothering you?