g80 is done!!!!! Suggestions on good replacement!

[l33z71]

So can I run the 4.10's outback and leave front alone? Just don't use 4wd on any hard surface.

[beingblueeyes]

So can I run the 4.10's outback and leave front alone? Just don't use 4wd on any hard surface.

im not sure how that would work, even if all 4 wheels are spinning the computer would still see 2 different speeds for the front and back

[oleshifty]

I would pull front shaft if you're going to only do the rear, to be on safe side.


Talk to ron (he's one of our vendors) GREAT prices on gears/true-tracs. Labor however, is lil more money.

[Frenchy]

You could try junkyard searching for a 4.10 equipped front diff from a Z71, save some money that way.

[l33z71]

Thanks for all the info. I'm going with tru-trac and 4.10's

[l33z71]

Planning on doing the install myself. Any tips r tricks I need to know.

[tanz45]

Yes, pull front shaft.

X2 on a factory 4.10 diff. Not a z71, but a V-max truck. They had 4.10's, i don't believe a z71 ever came above 3.73.

As of tips, get a few extra crush sleeves and take your time. Start out using your stock shims on the pinion and carrier if you can. Went from 3.42's to 4.10s with a yukin posi. Used the stock .035 pinion shim depth (new shim) and even got lucky by using the stock carrier shims. Came in at around .007/.008. Not 100% sure, it was a few months ago.

There is also a trick to the pinion preload. Once you think you have it, put a 1/2 breaker bar on the pinion nut at horizontal, let it go and is should fall at a medium rate. How Chris did mine and never made any noise

[kyhunter89]

im in shock id a z71 never came with 4.10s...

thats vary by weight of the breaker bar. but itd be close enough