As long as you've decided to rebuild with all new internals, throw it back together and beat it till it blows up! Seriously, a friend of mine fragged a lifter in his big block chevy- 68 Firebird, we were so disgusted, we put a big magnet on the oil pan, replaced the lifter, and he's been beating the thing for over a year! We figure the rotating assembly on a BBC is so massive it will just pulverize anything that gets in it's way. Plus catostrophic engine failures are cool...