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

[l33z71]

Rear end is done in my truck. 05' z71 5.3. Question is what to replace with? I've been wanting to change ratios. Running 3.42 now. Cam, longtubes, stall and tune coming soon. I'm thinking 4.10's ! What type rear is good and can I run 4.10 in rear and leave fronts 3.42 as long as I don't use 4wd. Eventually going to do both as finances permit. I'm also on the stock 17's. On the last track day I ran 15.0 at 93 with current setup. Thanks

[kyhunter89]

the whole forum will say tru-trac. 4.10's if your not on highway much. 3.73s if you run the interstate.

[Botlfed]

the whole forum will say tru-trac. 4.10's if your not on highway much. 3.73s if you run the interstate.

x1,000,000

[maze2525]

but wouldnt see that big of a diff from 3.42 to 3.73 would ya

[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.