Just to follow up, the pushrod length and rocker geometry with the Harland Sharp 1.6 rockers is pretty darn good. The roller area is centered on top of the valve and measures .120" travel. Checked on a few, but here's one:
With .640" lift and the HS rockers, you shouldn't have more than .040" sweep. A 300% error in geometry is not going to be good for the valvetrain.
Mike Beachel
I didn't write the rules of math nor create the laws of physics, I am just bound by them.
