Offroad Trailblazers and Envoys

Ring/Pinion Gear Brands

G80, GU6, GT4, GT5, WTF? This section is for gearing and driveline stuff.

by HARDTRAILZ » Fri Dec 30, 2016 1:49 pm

6-10 is front and rear recommended by GM and most aftermarket gears say 6-12.



Pinion Preload(New) Pinion Preload(Reused) Ring Gear Backlash Ring Gear Bolt Torque Carrier Bearing Cap Bolts

GM 7.2" IFS 11 to 14 in-lbs. 6 to 7 in-lbs. .006" to .010" 65 ft-lbs. 60 ft-lbs.
GM 8.5" / 8.6" 14 to 19 in-lbs. 6 to 8 in-lbs. .006" to .010" 65 ft-lbs. 60 ft-lbs.
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by Anthony Hernandez » Fri Dec 30, 2016 7:26 pm

James said to check my tire pressure that the no slip is a clunky whore if they are off ( not his words btw )
Marks3"-moog 14's-fox shocks-z71's-4.56 gears-rear locker-
My build - viewtopic.php?f=74&t=6225
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by HARDTRAILZ » Fri Dec 30, 2016 7:30 pm

That's a whole different issue than gears. That kinda locker is a bit sloppy.
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by Timberwolf » Sat Dec 31, 2016 9:20 am

HawkeyeC25 wrote:I supplied the gears, locker, and rebuild kit including bearings and seals for both front and rear diffs. The prices are for labor with me just dropping off all the parts and axles still assembled.

Did you need a different carrier for the front? It's been a while since I've had gears done. Seems like I remember you needed a different carrier for the numerically higher ratios.
I guess same question for the rear, though I know you made that moot in your case by supplying a detroit locker carrier.
Any chance you still have links to where you bought everything?
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by HARDTRAILZ » Sat Dec 31, 2016 5:14 pm

There are no carrier cutoffs on our diffs.
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by HawkeyeC25 » Sun Jan 01, 2017 1:12 am

Timberwolf wrote:
HawkeyeC25 wrote:I supplied the gears, locker, and rebuild kit including bearings and seals for both front and rear diffs. The prices are for labor with me just dropping off all the parts and axles still assembled.

Did you need a different carrier for the front? It's been a while since I've had gears done. Seems like I remember you needed a different carrier for the numerically higher ratios.
I guess same question for the rear, though I know you made that moot in your case by supplying a detroit locker carrier.
Any chance you still have links to where you bought everything?

Nope, I used the stock carrier for the front. And you can for the rear, but as a reminder, I have the EXT 8.6" rear end and Eaton doesn't make a Detroit Locker for the 8". They do make a Detroit TrueTrac for the 8".

I bought the gears and rebuild kits as a package... but i'm sure you can search and find the rebuild kits by themselves.
https://www.amazon.com/gp/product/B01M0 ... UTF8&psc=1
https://www.amazon.com/gp/product/B01LX ... UTF8&psc=1
https://www.summitracing.com/parts/dtl-187c148a
2005 Trailblazer EXT LT V8 Lifted
Build Thread
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by Timberwolf » Wed Jan 25, 2017 1:34 pm

HawkeyeC25 wrote:
Timberwolf wrote:
HawkeyeC25 wrote:I supplied the gears, locker, and rebuild kit including bearings and seals for both front and rear diffs. The prices are for labor with me just dropping off all the parts and axles still assembled.

Did you need a different carrier for the front? It's been a while since I've had gears done. Seems like I remember you needed a different carrier for the numerically higher ratios.
I guess same question for the rear, though I know you made that moot in your case by supplying a detroit locker carrier.
Any chance you still have links to where you bought everything?

Nope, I used the stock carrier for the front. And you can for the rear, but as a reminder, I have the EXT 8.6" rear end and Eaton doesn't make a Detroit Locker for the 8". They do make a Detroit TrueTrac for the 8".

I bought the gears and rebuild kits as a package... but i'm sure you can search and find the rebuild kits by themselves.
https://www.amazon.com/gp/product/B01M0 ... UTF8&psc=1
https://www.amazon.com/gp/product/B01LX ... UTF8&psc=1
https://www.summitracing.com/parts/dtl-187c148a

Bought the stuff you linked (other than I went with a trutrac in the back) and an 8.6 rear. Dropped everything off to DTS in Ionia. He just called to say the bearing kit for the front was incorrect. He's ordering the right one. No big deal, just wanted to throw a heads up in case someone else uses these links to do what I'm doing (and you did). He quoted his labor at $625, plus he has to get the needle bearings for the IFS diff at $15-$30 each (he wasn't 100% sure on price)
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by Lone_Wolf » Mon Oct 01, 2018 11:34 am

How much should I expect to pay for 4.10 ring and pinion. My dad and I can do all the labor ourselves so just need a rough price quote. I just want to run 32 or 33s on my TB.
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by cpyonker » Mon Oct 01, 2018 3:25 pm

You know you need to rehear front and rear right?
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by mason10198 » Mon Oct 01, 2018 3:32 pm

Lone_Wolf wrote:How much should I expect to pay for 4.10 ring and pinion. My dad and I can do all the labor ourselves so just need a rough price quote. I just want to run 32 or 33s on my TB.

I bought mine from Yukon Gear & Axle on Amazon. You'll need a gear set and an overhaul kit for each diff. Here's what I paid:

Front Diff
    4.56 Gearset - $126
    Master Overhaul Kit - $122

Rear Diff
    4.56 Gearset - $231
    Master Overhaul Kit - $175
    Eaton E-Locker - $780

Total - $1434 // ($654 w/o E-Locker)
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