Who here has done one? I'm shopping for a 99-06 rcsb. I want to stay as cheap as possible in the beginning. I've found plenty 4.8's for ~10k, but the 4.3 v6's are going for 3k less. 3k and I could build a pretty damn good 5.7 to drop in which is what I would do with the v8 truck anyway. And yes, I have used the search button and only come up with pre 99 trucks on this swap.

 

demon on gmfullsize did the swap. he has a damn nice write up floating around on ls1truck.

 

its a sticky in the v8 conversions section on ls1truck

 

here you go V6 to V8 swap !

https://www.performancetrucks.net/fo...d.php?t=378643

 

he went from a 4.3 to a LS1 if I'm not mistaken but the swap steps should be identical for any other truck motor...

 

dlh2006 went to a 6.0, or so his sig says...

 

that would be me lol.