Highest flowing sbm heads?

justinp61 said
Don, I had a very similar grind in my 408, 260/264, .626/.633 IIRC with 1.6 rockers, in at 104°. It was only 10.8-1 and ran 6.57 @ 104 at 3340#.

yep, very impressive.
I am trying to get there..lol
more lift I know would really wake it up. Even with 1.6 on intake it’s only 602 , see what happens.
getting fresh air to the motor would help too, I am sure