Originally Posted by inkfreak1976
im building a 351 clevland, .030 over, flat top pistons. im running 60cc aussie heads. the problem im having is, im trying to find the best push rod length, but im having a problem with the push rod popping out of the cup on the rocker arm, when its rolled over, i can tell that its rubbing on the rocker arm and is getting pushed out. ive tried many different push rod lengths in order to correct this issue. im thinking if i grind off some of the area where its rubbing that would fix this issue but i want some different opinions.
im using comp 17045-16 1.73 rocker arms, arp 100-7101 (7/16-20-1.90) and manly guide plates 42163-8.
im looking for other reasons that this would happen if any. let me know what ya think thanks
Apparently, this isn't all that uncommon, rockers may need relieved as you mentioned- Ford 335 "Cleveland" Series Engine Forum: Broken Rocker Arms