Hi
My engine uppgrade project is going on.
Engine is 250" GM. I have allready .442 marine cam from Stovebolt and Offenhauser 4bbl intake.
I should make decision which head I use, milled 250" or 194". Both have same size valves. Milled 250" (0.006") have 9.25 compression and 194" 9.39 compression. Is there some reason I should not to use 194". I know that 194" air flow is more restricted by the smaller chamber size, but this will not be racing engine. Any ideas or recommendations?