For what it's worth, I did not have mine drilled for lifter oil galleys (after talking w/ Ken) and it's been flawless for the 6 years I've been running it. I run a solid roller, but it's not real aggressive. I have it apart for freshening right now and everything looks great.
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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