Greetings. I am installing a new cam and was comparing stock lifters with Johnson Hylift. The Hylift lifters have a much smaller hole in the pushrod cup than the stock lifters. But the Hylift lifters have a much larger oil feed hole in the lifter body. The dimensions are identical. Do these differences matter? Maybe asked before but I can't find anything. Thanks
Doesn't matter. The oil supply is regulated internally.
Only thing i kno is ive used those lifters with great results and quiet valve train . An im talkin hittin the rev limiter every ride .
Yea, I got mine from Larry & they've got 80K on them, they never made a peep, even after sitting in a cold garage for weeks. Great lifters & service, I'll never buy anything else!