Upgrading gears

[AtomicHoe094]

here...
G80 is Posi. GU6 is 3.42s. GT4 is 3.73s. GT5 is 4.10s. GS6 is 4.56s

or go to www.rpocodes.com

 

[blueflamed03]

here...
G80 is Posi. GU6 is 3.42s. GT4 is 3.73s. GT5 is 4.10s. GS6 is 4.56s

or go to www.rpocodes.com

Adams dead on, run the code in your glove box to see what is close to these, bingo

 

[ewheelin]

Thanks for this info, I now know I have 342s and posi!
Shel

 

[grimm]

Yeah, the sticker in your glove box will tell you just about everything you would want to know about your ride. Even printed on there is the paint code, if you need to know what color you have or if you are repainting.

---------- Post added at 03:48 PM ---------- Previous post was at 03:40 PM ----------

Oh and to answer your original question. I'd take it to a shop unless you have some axles to practice with and all the right tools.

If for instance you had a 3 inch BL, 33 inch tires, 4.10 gears, and an extended hitch, you'd probably be fine in towing situations and your gas mileage would probably be fine.

 

[97yukon]

i just put 373 in mine and watching my buddy do it...no way i would have know what the hell to do and id like to think im pretty mechanically inclined. i have no noise and i had 308's so it was a huge difference once i had it re-tuned.

 

[Arctic-Rodz]

here...
G80 is Posi. GU6 is 3.42s. GT4 is 3.73s. GT5 is 4.10s. GS6 is 4.56s

or go to www.rpocodes.com

are all these options posi units or is the G80 the only posi? and the rest limited slip?

 

[Bad bow tie]

are all these options posi units or is the G80 the only posi? and the rest limited slip?

The G80 is the factory locker and the rest are gear ratios.