Originally Posted By TRENDZ
What is the function of the notches in the upper part of the band? Looks like it would bleed pressure with higher lift cams


The notches are where the oil feeds are. The lifter wheel can't go any higher than the top of the journal so if the notches aren't exposed at that position then the design is safe.

I built a tool once to check that but I haven't measured these lifters yet. I'd be surprised if Gaterman missed that detail.