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Regearing my rear-end

Combatvet0311

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Combatvet0311 Enthusiast

Combatvet0311

Posted
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Has anyone experienced DIY regearing your rear-end on a NBS, specifically '02 or roughly '99 and newer? What headaches would this cause...would it void any warranty or are special tools required? I'd like to swap in some 4.88's w/ a locker.

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

It could potentially void your entire drivetrain warranty, cost a pretty penny (you have to do the front too) and requires quite a bit of labor and a couple of special tools.

Combatvet0311 Enthusiast

Combatvet0311

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2wd so I dont need to do the front. My warranty is getting close to being up anyways, so has anyone done this on a NBS and can give me an idea what to expect? Maybe let me know what specialty tools?

Wingnut Senior Enthusiast

Wingnut

Posted
Posted

It's a 2wd? Cool! Now you can just find somebody selling an entire rear end with the gears you want already in it.

 

Swap it in...Should only take a few hours and some simple hand tools (impact stuff would make it easier though).

 

That would be a TON easier (and cheaper) than actually cracking the housing open and regearing it.

  • 3 weeks later...
fvisions Enthusiast

fvisions

Posted
Posted
2wd so I dont need to do the front. My warranty is getting close to being up anyways, so has anyone done this on a NBS and can give me an idea what to expect? Maybe let me know what specialty tools?

 

My advise - purchase the Shop Manual! No, Not Haynes or that stuff (junk). Any tools will be listed by part number and you can purchase them online. The best part is the orginal Shop Manual will tell you about any short-cuts and the possible problem you need to be looking out for during the job. I have spent the last 6 years restoring a number of GM trucks and I never start the task without the Shop Manual in hand. Best of all if you ever sell the truck it is a great selling tool that almost any buyer will love to have in hand.

  • 2 months later...
VENNOM Enthusiast

VENNOM

Posted
Posted

If you attempt it yourself you'll need a press and bearing spliter, along with a shim assortment, rounout indicator...

Novices best way is to buy 2 sets of new bearings, hone the center of one set out so it fits the carrier/ pinion w/o pressing it on. Set your shims/ pinion depth with the "loose brgs. Once your happy with the way the marking compound/ everything looks, have the "tight" bearings pressed on, throw it back together, double check, and away you go :crackup: .

 

My advice: Call arround to some driveline shops, Get quotes on if you pull the axle and bring it in (Most places that do it everyday love it, as it doesn't tie up a mechanics bay, and knock some labor off).

 

Or a junkyark axle swap, is also an option, although it is a gamble. I don't think GM made 1/2 ton axles with 4.88 gears. 1 ton axles, maybe...

Alljackedup408 Enthusiast

Alljackedup408

Posted
Posted

If ur not concerned about money.. or want some really good stuff.. i would recommend checking out dynatrac... ive got there 60 series underneath my 99... its got 4.88 gears with a detroit locker.. unit costs about $5500. But if u just want it for street use and a lil off road.. a gear swap or GM rearend would work just fine. A note on the locker... sometimes is jerky when u go first accelerate.. and when turning.. its almost like a posi.. it gives some..but acts alot like a posi.. and the tires will tear up a yard when turning...lol.. but when it comes to goin thorugh mud.. alot of times i dont even gotta lock it in 4wd.. just cause of the locker.

  • 2 weeks later...
breecher_7 Enthusiast

breecher_7

Posted
Posted
If you attempt it yourself you'll need a press and bearing spliter, along with a shim assortment, rounout indicator...

Novices best way is to buy 2 sets of new bearings, hone the center of one set out so it fits the carrier/ pinion w/o pressing it on. Set your shims/ pinion depth with the "loose brgs. Once your happy with the way the marking compound/ everything looks, have the "tight" bearings pressed on, throw it back together, double check, and away you go :happysad: .

 

My advice: Call arround to some driveline shops, Get quotes on if you pull the axle and bring it in (Most places that do it everyday love it, as it doesn't tie up a mechanics bay, and knock some labor off).

 

Or a junkyark axle swap, is also an option, although it is a gamble. I don't think GM made 1/2 ton axles with 4.88 gears. 1 ton axles, maybe...

 

 

This is really good advice. It truly is not hard to do, alot of people get intimidated by it. Its a 2 hour job on the rear end. IFS fronts are another story......

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