The old unbushed will-seize-on-the-shaft CAT stainless rockers were also like that.

There is obviously no testing done on that stuff, or input from builders familiar with the platform for that matter.

I didn’t see where the OP mentioned if this is a BB or SB.

On the SB, there is a definite loss of effective ratio(as measured at the valve) from the 59* lifter bank angle and the pushrod angle.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads