Originally Posted by v2win
I had some aftermarket lifters do that once, I think they were iskys or comp cams I don't remember. Anyway when I pulled the new lifers out and compared them to the old ones I found the oil grove was machined a little lower on the lifter than the origional one. I replaced them with some Mopar brand ones that were machined correctly and the noise went away.
that sounds like what I was thinking but I didnt think anyone would make lifters like that.