Quote Originally Posted by jerry clayton View Post
Well-actually---------A flat tappet cam that is properly broken in can be switched between engines and lifters as long as the lifters are also properly broken in and/or new quality units. The issue is initial and continuing lubrication . assuming that the lifters are free to spin in the tappet bores and oil to the top of engine hasn't been reduced and/or oil routing hasn't been compremised.
Good word, Jerry - I've reused a cam, lifters and push rods in the same engine and always made sure everything went back in it's original spot without issue. Never tried to put used cam in a different block, but your logic (as always) is sound and it makes sense if properly seasoned in another block.

A question - have you seen significant wear pattern(s) on the cam bearings that may impact placing a used cam in a different block with new bearings?

Love these kind of discussions thread and this ol' dog is always wanting to learn some new tricks!
Glenn