My 422 smallblock build

if you are running roller you can run pressure fed rollers
if FT run an EDM hole 've seem /015 to /045 and would appreciate comments on what size works best
If hyd grind a flat on the side of the lifter like the 229 v6 chevy
the flat goes from the oil bans to about an eighth from the face and needs a hole as would the edm and pressure fed roller
there is a picture in the thompson lifter catalog or just go buy one
Mopar lifters may be available from Crower or Rhodes, maybe Howards or Hughe but it's so easy to do with a v block and mag base grinder...
Mike Jones says splash all by itself is inadequate for lifter face
mw 'd check the lifter bores and lifter bore clearance real close
there are a lot of undersized lifters out there even with perfect stock size bores'\
and lots of worn out lifter bores
and lots with big chamfers at tops and bottoms