Cam change?
A thought, is there a beehive type spring that will compliment that cam? I am thinking it may work well, but may like a looser converter?
on comparison, i went from a 590 flat tappet to a 286 @ 50, .750lift roller on a 535 with ported 906 heads many years ago. I went from 10.50s to 10.20s and gained over 4 mph.
