So if there's no machining necessary in order to use solid roller lifters, what's the point/meaning of "retro-fit"?
Also, have any of you used the 440 Source hydraulic roller lifters? I was pro'ly going to go with the Comp lifters, but if I hear good things about the Source's I may change my mind.
Thanks (again) in advance for any help.


"When I'm in a slump, I comfort myself by saying if I believe in dinosaurs, then somewhere, they must be believing in me. And if they believe in me, then I can believe in me." - Mookie Wilson