I've been building and racing BB wedge Mopars and 426 hemi motors since the early 1970s, I've never heard of anyone at the races or on the internet have oiling problems from bushing lifter bores, never confused
Me thinks your source is trying to blame a building error or part failure on some smoke and mirrors work
Call Dwayne and ask him also, let us know what he says please thumbs
EDITED: The lifter is around .080, I think confused, smaller O.D. than most lifter bushings I've seen, do you think that .040 sticking into the oil galley will cause a severe oil restriction work
I know breaking a valve spring or some other valve train part that allows the lifter to come out of its bore will cause instant oil pressure loss shruggy

Last edited by Cab_Burge; 12/10/17 03:14 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)