I'm buying a rcswb soon but I want to know what it takes to put down 400rwhp. Also did the 6.0l ever come in the 1500 or was it just the 2500. I just want to make sure I buy the right truck with the right motor. If you guys could help me out that would be great.

Thanks in advance.

 

6.0 came in the ss and in some Ecsb as a vortec max

 

might look into a ecsb, kinda wanted a rcsb. Can you make good power with the 5.3 like intake, haeder, full ex and maybe a cam. I like to put down 400 rwhp

 

you are not going to make 400 easy from a 5.3 or 6.0 ....it isn't impossible but i would think the combo would include a good set of heads. and then some.

Welcome to the forum, go check out the dyno list and look at the mods in that power region.