I was under the impression that for a higher lift a little larger valve was needed. But then again, that's why I'm askin'. I like the thought of the 302's with a thinner gasket and keep the pistons I have.
Not necessarily. It's actually better to run the smallest valve you can, that the head will flow well with on your engine, because it drops shrouding down a bit.
If you are running into restrictions from runner volume/ size against valve size, sure, bring the valve seats/ valves open a bit to help out, but if you can get the flow numbers you want out of a smaller valve, you are winning.
