I've got an '05 rcsb 2wd 4.8L 5spd with 3.73 gears and G80. I am having an awful hard time deciding whether to radix the 4.8L or swap in a 6.0. Either one would be awesome with the 5 speed. I've already got the 6.0 lq4 from a surplus sale gm was having, I'm kinda leanin toward the 6.0.

 

if you already have the 6.0, why not do a radix'd LQ4?

 

Throw in a 6spd conversion if you go with a Radix 6.0,because the 5spd and stock clutch will soon be history.

 

or maybe a Turbo.

You have 3.83 gears in your sig ???

 

a blown 6.0 would be nice, it would even be nice with 6spd conversion, it would even be nicer if I had the money to do all this. see, I don't actually have the 6.0L in my possession just yet, I work in parts at a dealer and just havent bought it yet, so when I buy the 6.0 I won't have the money to do the radix, if I buy the radix, I wont have the money to do the 6.0L. So that kinda leaves the 6spd conversion out of the picture for now.

 

sorry about the 3.83 in my sig, I will fix it immediately.

 

It's fixed now

 

Go with the 6.0 with an upgraded clutch.

 

Do the 6.0 and the best you can with the 5 gear and you can save for the rest if you want to. I'll bet you probably will want to.

 

4.8 + Radix will be a heck of alot more fun than a stock 6.0 and put out much more power with boost to spare.

If it were me though, I'd probably do the 6.0 now and save for a Radix later.

HOWEVER, if this is a one time expense, I would go 4.8 + Radix.