Yeah, I picked up on the '03 and knowing the '03 Hemi suffered from weak springs and push rods, I just went on like it was a Hemi, LOL.
But the fact that Mopar changed part numbers like that would throw a red flag up with me. Although I've not really heard of the issue being widespread before, I'd prolly throw the newer designed ones in and hope that did the trick.
I've got the 4.7 but the HO version in my Grand Cherokee, a lot of upgraded parts over the standard 4.7, such as stronger springs, floating wrist pins on the connecting rods instead of the press type, forged crank, different cam, larger injectors, etc. but I think the rocker arms are the same. Mine is quiet as can be, no lifter noise whatsoever...
Last edited by HammerZ71; 07-23-2011 at 04:38 PM.