Guess I've been doing it wrong all of these years w/solid roller cams, needle bearings in my rockers, 8" overheating verts and BIG carbs..........too funny.......ANYTHING can and will break in the "wrong" hands and sometimes things just fail. In the op's case HS's or a good bushed lifter if it helps ya sleep...........   I have a set of full roller Harland Sharps on my Indy headed 440. They were new sometime back in the '90s and have a lot of use on them.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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