I know that what we get as after market parts will never be as good a the original OEM machined years ago. I was following this as I've had the same issue with a late model LS engine, 2 sets of lifters later and it finally calmed down. Oil viscosity didn't seem to change much in my situation, though todays engines require a lot lighter oil than say a 235.
If I were Phil I might want to find a decent set of used lifter and use those internals in the new bodies he has. With some trial and error and a good caliper he may be able to find a good fit and not worry to much about the wear pattern of the old lifter against a new cam. Just a thought.
Last edited by TUTS 59; 12/07/2020 7:46 PM.
