Quote Originally Posted by camaro_fever68
That's with any engine. Of course, the bigger the cam the worst reversion will become an issue. An 1/8" lip on the bottom of the intake runner has the most anti-reversion benefit. It's also beneficial if the headers are about an 1/8" below the bottom of the exhaust port.
I apologize I was reading your post wrong . Makes perfect since once I read it slow
So your saying you should have a small lip on the bottom of the intake and exhaust ports. Sides and top should be smooth???