losaun

Hello forum,
I am by nature a import guy but I just got my first GM truck. I purchased it yesterday knowing it had a bad rear end. After doing a little research on replacing my rear end I have found that no has a 3.23 rear end. I have a 2006 Sierra crew cab with a 4.8 engine that has a lifter tick with 3.23 gears. My question is this. Can I go with 3.73 gears for now as Im planning on going 5.3 or 6.0 later. Please advise.

madmann26

iTrader: (7)

You can.

Depending on miles, it may be beneficial to overhaul the rear end.

Either way, you're going to need a means to fix the speedo, usually a tune.

losaun

Thanks madmann26, I have never done an overhaul and I have called various transmission shops and all have said they are not interested in the job. I am fearful of purchasing a used rear end because you do not know what you are getting.

_zebra

iTrader: (5)

are you 2wd or 4wd, and is it a stick or auto?
if you're looking for gas mileage, a 3.42 ain't a terrible replacement in a 2wd regular cab.
if you've got a back seat, i'd personally recommend 4.11s for 2wd or 4x4 with either trans. that little 4.8 will thank you.

for reference, i put 4.30s in my RCSB 4x4 with 33s and a 5-speed

1slow99

4.11 for a 4.8 would work really good. If youre running a tire bigger than 33 consider 4.56