burnt cam....?

Has anyone seen this before? They haven't pulled the cam out yet. They think its just the cam, but I kind of feel like there might be another issue....seems like there might be more to it than just a cam. Maybe Lifters not getting the oil the should.
It's on a 2007 Tahoe, 5.3, 120k miles.
Last edited by 2 SSlow; Feb 16, 2012 at 02:24 PM.








