Originally Posted By BradH

Everyone who hears the size of those holes always acts shocked and tells me they're way too big. Well, they're a He11uva lot smaller than the size of the galley opening in an unbushed lifter bore, and the engine had no oil pressure issues on the dyno either at idle or WOT up to 7200 RPM.


One of the reasons for bushings is to eliminate those huge oil leaks. I didn't have oil pressure issues either, looking at the gauge. But my rod bearings sure appreciated it when I started fixing the internal leaks.


If the results don't match the theory, change the theory.