flathead31coupe
Well-Known Member
So I've taken out the 1970 440. 10 and a half to one compression. Wasn't able to run the supercharger due to the compression. So out with the old in with a 543 stroker 906 heads bigger stainless steel valves, hardened seats. Running around eight and a half to one. Compression. Will be staying under 10 lb of boost. Let's see how this goes lol.