First thing to decide is are the new lifters the right size. I don't have any 235 specs, but just for example the '59 GMC Maintenance Manual lists bore size of .9905 to .9915 inches and lifter diameter of .989 to .990 inches for new parts. That would give a new part clearance of .0005 to .0025 inches. Maximum wear clearance is listed as .004 inches.

You need to find the same specs for your Chevy.


EDIT:

Dan beat me to the draw.

Looks like Chevy and GMC 6 cylinder engines may have used the same lifters (or at least the same diameter - the GMC uses solid lifters) in '59.

Last edited by Bill Hanlon; 08/15/2026 10:31 PM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.