Quote: How much gain could i expect from upgrading to 2.055 valve?
I'm not sure exactly what you can gain as far as CFM. The factory SB Edelbrock intake bowl is pretty big and throat is over 90%. By going to a 2.05" valve, it allows you to cut a completely different seat with the extra material. It also slightly steepens the approach to short turn and gives you more curtain area throughout the lift cycle. I don't like the Edelbrock chamber, as it has flat chamber and very pronounced corner adjacent to the intake valve that I find is nearly impossible to fix without blowing the chamber past the bore it will run on. A 2.05" valve makes this close proximity even worse.
Can you gain by adding the bigger valve? Yes.......but, there is more air flow to be gained further back in the port. I'm sure Brian or Ryan will have something to add.
