Quote: For a race engine you'll want the most compression possible without hurting power. Sometimes a large dome will reduce power or deep valve pockets will reduce power.
Max power on race gas would be 16:1 compression with a flat top piston but you rarely get that lucky.
I prefer the most compression up to 16.5-1 I can get, without a dome, with a .050 head gasket. That said, I usually need a small dome. Stroke has everything to do with it, and I have 4.5 and 4.75.
