"I been around these for years and know you can not pick up compression so easily. Swapping pistons or gasket thickness will or get you a cc or two, and a simple valve job can loose you just as much."

That would be good news for me. I think.

I'm using the biggest combustion chamber Pontiac has...your saying that the compression ratio will be too low. Right? and it would be difficult to get it up into the 9-9 1/2 range?


1947 M15 Studebaker 454 4x4
1949 Chevy COE
In the Stovebolt Gallery
More pix of the COE
1950 Harley FL
1958 GMC LCF 455 3x2bbl
1961 Chevy C60 Tilt Cab 327
1966 Chevy C60 Tilt Cab 496
1961 Chevy K10 sb 292
1974 Harley FXE
1979 Chevy K10 sb
2007 Harley Streetglide


I'm not that good but I'm slow