Quote Originally Posted by DennyW
From reading your discription, I would say to check your clearances on the cam bearings. If the clearance is tighter on 1 or 2, and the rest are looser, guess what ? The tight ones will starve on oil.

Also, never rule out the new parts. I have gotten a few that were bad right out of the box.

The hardness depth on stock Chevy cams in general are not very deep, and it doesn't take long to go through that if not properly done on the breakin.

Note: I was talking to a engine builder, and he told me that 2 cams from Lunati had went flat on him. He switched, and no more problem. I'm not knocking them at all, cause I know they have good products. Just a note on this is all.

Chipped lifters indicate chatter. Make sure you use a slick oil. Also, if the lifter holes are mis aligned in relation to the cam lobes, or the ramp on the cam is to steep.
Denny,I would guess the Lunati cam failure was due to the lifter crown and not the cam it's self.