yea the 6.0 wont do that (piston slap motor).
Kinda hijacking the thread. but...
Lots of the LS series motors have that problem. Heard it on several LS1's and a bunch of trucks with 4.8/5.3/6.0 and there is a good reason.
www.pistonslap.comI like the trucks otherwise. I didn't buy one because of the piston slap issue. That and the weak driveline they keep using in the 1500.
