in my 5.3 i pulled it to do a 6.0 swap and did a compression check. 55-60 in all cylinders but 7 it only had 28 ish. also pulled the cam to reuse it in the 6.0 but it was toast also the lifter is all chewed up. so a new 6.0 and a custom grind cam from texas speed. so new number coming soon.
a few pics of the cam.

 

damn that....how long ago do you think that lobe died?

 

your cam doesnt look so well.. got the 5.3 tore apart yet?

 

What brand cam? Re-grind?

 

the cam only has about 10k miles on it im guessing its been slowly tearing up for the past 6 months the lifter looks about the same

yeah i sent a order in for a new cam it should be here tuesday or so... i tore the 5.3 most of the way down. everything looks good but the cam lifter and the rings for #7

its a comp cam and i got it brand new.

 

Get new lifter trays. I would change mine every other oil change if it was easy.

Or when you say a new 6.0, do you mean brand new?

 

55-60, and 28 what? Is that kPa?

 

Over on LS1tech there is a Miriad of threads on guys losing LS7 and Caddy Lifters on Aftermarket aggressive cams, i'm upgrading to the more expensive Morels but its good insurance as cams are not cheap!