Hi everyone im new to the forum, but not to silverados! Well i have a 2006 silverado rcsb 2wd with a 5.3. I have a whipple supercharger on it right now with 8psi, and I believe I cooked my 4l60 The other day. I figured it was only a matter of time. I punched it on the highway and I felt it slip and now it makes a funny noise and a small shutter going from 2nd to 3rd. So heres my situation Me and my father own an autobody so i can get my hands on pretty much any wreck i want very cheap. So i know its time to do a 4l80 swap. My plan is to grab like a 05 3/4 ton thats wrecked and take the tranny out of that, and i figured while im at it i might as well do a 6.0 swap. As i said before i have a nice shiny whipple supercharger that will bolt right up to the 6 liter engine. I want do some work to the engine before i do the swap but i don't know too much about after market parts for LS engines, so maybe some of you fine Gents can help me. I basically want to make a nice 8:1 setup and run as much boost as i can. Can anyone recommend a good crank, rods, pistons that can handle some serious boost. Also can the stock top end handle that kind of power. I know ill have to get some bigger injectors, but im trying to do this on some what of a budget. Depending on how much boost i run im looking to be in the 5-600 hp range. Sorry for the long post but any helps would be much appreciated thanks everyone!