I had the same problems with galling trying to use the Speed Pro Hi Po rocker shafts with ductile iron rockers Ended up only using either Iskys or RAS shafts, that cures those problems I had to learn the same lesson on CAT aluminum roller rocker arm also, don't use the Speed Pro Hi Po shafts on them either
Last edited by Cab_Burge; 12/04/1803:29 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)