what e clip for a hyd lifter retainer

Rapid Robert said
6200 rev limiter (class rules). I am going to try uncle tonys garage no preload

If this is for your IMCA hobbystock, 6200 rpm is the rev limit for a 602 chevy crate motor. 7000 is the rpm limit for a claim motor like your 318.

maximum 6,200 rpm for crate engine and maximum 7,000 rpm for claim engine.
(Refer to www.imca.com