I've been using the same set of Crane Ductile rockers for 10 years now in my 446 with a comp 650 lift flat tappet , with no issues. I shift at 6800.


E. Williams 65 Coronet 500 3400lbs w/d, 446, Indy EZ'S, A&A transbrake,Comp 650 lift cam, 6.50 @ 105 mph 1/8th 10.25 @ 130mph 1/4