Unless you're also installing a much more radical grind camshaft, why do you want more compression? The design of the stovebolt cylinder head makes raising the compression a difficult and expensive process. Simply milling the head creates serious problems with piston/valve clearance, making it necessary to sink the intake valves deeper into the head. That shrouds the valve, and makes a lousy-flow head worse. Whatever gain in HP you might get from the raised compression will be offset by compromised breathing due to the valve shrouding. Other than special-ordering some sort of custom piston with a weird-shaped dome, I can't think of a very effective way of raising the compression, or why it would be necessary in the first place. A stovebolt cylinder head is so poorly designed that any improvement in valve size, intake, exhaust, or camshaft is pretty much wasted effort. You can actually make a silk purse out of a sow's ear, but it makes the pig look funny, and it doesn't hear very well. LOL!
Jerry
