Using a roller cam in a pre 85 small block
My Comp solid rollers didn't require any lifter bore mods, well Comp advertises then that way and it worked in my case. This is the only Mopar I have put them in so Moper may be right about them not fitting in some blocks due to casting/machining variances, he has build more Mopars than I have. It does take a little finessing to get them in because of the tie bar.
Chuck