The drawback to building 235/261 is that their head's don't breath well and there isn't a whole lot you can do about it, except forced induction. Turbo's will make power at a low enough RPM that you don't need high rev's.
Grant 1950 Chevy 3100 1952 GMC 150 (In Pieces) 1968 Chevy K20 1966 Shovelhead 1978 BMW 100S
