2000 tahoe with 5.3 to be punched?

[bbfao]

I have a 2000 tahoe with the 5.3. I read an article in hot rod about punching it to a 350 and swapping the cam for a gain of 130 hp, does anyone know anything about this?

[Zed 71]

Try the 2000-2006 (NBS) section. Have you looked into swapping out for the 6.0?

[doubletapdrew]

Here is an article in CC on getting 120hp from heads and a cam in the 5.3L
http://www.carcraft.com/techarticles/ccrp_0804_325_chevy_small_block_engine/index.html
You may also want to read this thread where they were saying it's not cost effective to do:
http://www.ls1tech.com/forums/generation-iii-internal-engine/893117-stroking-boring-5-3l-lm7.html
Without a doubt. You can make a 5.3L into an iron block LS1 by boring it over. The 5.3L has everything you need, just buy the bigger pistons.

Know ahead of time that the cost of machine work and new pistons will be twice as expensive as buying a 6.0L. Only build the iron block 5.7L if you have something to prove, otherwise there's better power to be had with the 6.0L for a starting platform.