Well I got the bad Speedmaster taste out of my mouth
Ok here it is with it blued and marked with a 1008 Felpro gasket. Do this to an Edelbrock head and you will see the extra clearance I posted about and why the lowlift numbers are higher comparing both ported heads. This little bit of chamber work and a 2.05 valve will go 308-313. When I want to go over 325 and a 2.08 valve I would lay down that back wall some on my heads.
Ok here it is with it blued and marked with a 1008 Felpro gasket. Do this to an Edelbrock head and you will see the extra clearance I posted about and why the lowlift numbers are higher comparing both ported heads. This little bit of chamber work and a 2.05 valve will go 308-313. When I want to go over 325 and a 2.08 valve I would lay down that back wall some on my heads.