twisterf5
04-21-2014, 06:32 AM
any one try this prw shaft rockers 335001 for sbc.i have them on my 421 with dart 215 heads and cant seem to run more than 2 laps before it tosses a push rod.435 lift at the cam, roller cam 150 longer valves.657 at the valve. i have shimmed them up and down can't go any higher than they are. prw says they will handle the lift and rpm that we are turning. put a set of 1.6 rockers on one cly last night,700 lift at the valve and every thing looked good, took them off the back up engine with the same cam. any info on these shaft rocker would help. don't wont to toss them.