Let’s have another discussion. This time TrickFlow heads.

Bobzilla said
Theoretical question. Bench racing, you could say.

Without dyno testing or track testing, what do you guys "think" that vain may do to the column air coming through there? Would it redirect the air from cylinder wall side of the port (left side of PRH's picture) back toward the opposite side of the valve where it's less restricted by the cylinder wall? Would it try to keep the air from the other side of the port (right side of PRH's picture) from going toward the side of the port that is close to the cylinder wall (left side of PRH's picture)?

I’m still letting some of this sink in but I think I will add one thing. I think we put to much weight on valve shrouding. My flow fixture for small block Mopars is 4.015. I feel that if I can get good flow numbers with that fixture a .030 over 360 is guaranteed at least that much. Most of the heads I’ve ported lately have been with a 2.055 valve. I run a 2.08. And if I remember right (it’s been 8 years ) Indy 360-1 heads have a 2.15 valve flowed on the same fixture.