5.3 to 6.0 coversion!

[gets]

I have a 2001 sierra 5.3 with 115k on it and it has a major i'm sure it's a piston slap it will go away after two or three min. Of running but it's so loud it's embarassing to have a rattling chevy that sounds like a diesel, so sad to say! I love chevys and the 5.3 but if i'm going to trade it out i'd like to step up to the 6.0! What would i have to change to do the coversion? Would i have to change the computor or harness? From the sounds of it, it will bolt right in, someone said that the y pipe maybe diffrent??? Again dont know!
Or can a newer 5.3 be installed and just up grade the cam ect to get a bit more power! Any idea whats the best way to get rid of that darn slap?
I know people say dont worry about it but it just run it. But it's an image thing can't have a rattling chevy!

[kerrige]

If you swap a 6.0 over you will need a 6.0 motor, and a tune.... thats about it.

[Beatdown Z]

If you swap a 6.0 over you will need a 6.0 motor, and a tune.... thats about it.

X2, but you know you want to mod it up while it's on the engine stand. Do it!!!

[kerrige]

X2, but you know you want to mod it up while it's on the engine stand. Do it!!!

So that means add cam, and heads package, NNBS intake, 87/90mm TB, LT's, and some spray

[06Sierra2]

:

So that means add cam, and heads package, NNBS intake, 87/90mm TB, LT's, and some spray

:hyper2 exactly what i wanna do if i can find one to put on a stand.

[bstill]

You should hear an l92 on cold startup. Well, at least the one I had was really loud. Sounded like a dmax when it was cold.

[pl4yboy]

You should hear an l92 on cold startup. Well, at least the one I had was really loud. Sounded like a dmax when it was cold.

You should hear one with a Spintech...