Well what do you mean they could go flat? How likely is it that would happen? Could I just buy 4 new lifters as a fresh start so that new wear patterns could be made since lifters aren't that expensive?

Why should I be so careful changing the rear seal? I thought it was a simple, take it out, put in a new one. What is there to be cautious about?


69 Buick Special Deluxe. Intercooled Turbo Chevy 250 @ 15psi on a stock long block. It's kinda fast.