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Detroit TrueTrac

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jackgraves Enthusiast

jackgraves

Posted
Posted
you also got it set to a good meshing pattern?
Did you put a Truetrac in your truck also??????

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davester Senior Enthusiast

davester

Posted
Posted
34 minutes ago, jackgraves said:

Used same Gear. I didn't have to reset pattern

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From my understanding of it, changing the carrier can do it, so I would at least check that it has a decent pattern.

jackgraves Enthusiast

jackgraves

Posted
Posted

Well I'm ok because the marking compound still looked fine on my pattern Thanks for the Concern

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jackgraves Enthusiast

jackgraves

Posted
Posted
No, I haven't.
[emoji23][emoji23][emoji23][emoji23][emoji23][emoji23][emoji23][emoji23][emoji23][emoji23]

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davester Senior Enthusiast

davester

Posted
Posted

My truck came with a G80, but it likely blew up for a previous owner, and they just shoved in an open diff (I noticed this when I changed the rear diff fluid by removing the rear cover, before I discovered it has a drain plug in the bottom of the diff housing).  I used to get stuck in snow a couple of times a year (a lightly loaded dually, in wet snow, doesn't take much to create a rut lined with ice that one side will just spin in), but it hasn't happened since I upgraded the truck to have 4wd, so it would be a bunch of money for something that wouldn't make a significant difference in how the truck operates, as it's not about to do a burnout anytime soon.

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  • 3 months later...
Stuart White New Member

Stuart White

Posted
Posted
On 4/15/2020 at 4:44 PM, jackgraves said:

Ordered Truetrac this morning at 8:05AM

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I am interesting in performing a similar upgrade on my 2016 1500 LTZ 4x4 with the G80 9.76" in 3.42 so I would like to get some more information on exactly what you bought. It appears that you got the Eaton Detroit Truetac 914A538 w/ spacer. I assume you also had to purchase a bearing kit and maybe a shim kit. Could you provide some more information?

 

I bought my truck used with about 29K miles. I noticed right away that the rear diff felt loose but this truck also has the 8L90 which had bad shifting issues (way harsh on downshifts, 3-2, 2-1). The dealership resolved the tranny issues but says "no problem found" on the differential. During a fluid change, I did a visual inspection. I can see the spider gears moving on the differential pinion shaft nearly 1/16" towards the outside of the carrier as a wheel is rotated backwards and forwards. While this may be normal for a high mileage truck, it is surprising to me for a truck with only 30K miles. Rather than argue with the dealership, I figure I would rather just take the opportunity to upgrade to a Torsen style diff and that is why I chose the Trutrac.

  • 6 months later...
CTHM732 Enthusiast

CTHM732

Posted
Posted
On 6/2/2016 at 11:41 PM, Badass69 said:

They won't make one for these rear ends or they would have already. You can just buy this kit here......http://eastcoastgearsupply.com/c-963800-gears-install-kits-carriers-spider-gears-general-motors-gm-9-5-12-bolt.html

 

The aftermarket for these trucks diffs is a complete fail. At least you can convert the 9.5"..... the 9.76" junk my truck has will never have anything useful for parts made for it lol. Maybe 20 years from now.... but by then who really cares.

I converted my 4x4 6.2 8 speed 9.76 over to 3.73 three years ago. The parts have been out there, just had to do some research. Yes, aftermarket has sucked but I’ve been happy with the AAM carriers and ring and pinion. Eaton is releasing 9.76 TrueTrac early this year so it’s now an option. It does require a spacer though from what I’ve read. I maxed out at 3.73 so I’m not running a spacer. My rear carrier is 23404621.

6.2Creedmoor Enthusiast

6.2Creedmoor

Posted
Posted
On 1/31/2021 at 3:55 PM, CTHM732 said:

I converted my 4x4 6.2 8 speed 9.76 over to 3.73 three years ago. The parts have been out there, just had to do some research. Yes, aftermarket has sucked but I’ve been happy with the AAM carriers and ring and pinion. Eaton is releasing 9.76 TrueTrac early this year so it’s now an option. It does require a spacer though from what I’ve read. I maxed out at 3.73 so I’m not running a spacer. My rear carrier is 23404621.

What are your thoughts on now having the TrueTrac installed? 

 

I am in the same boat as I am converting my 4x4 6.2L 8 spd 9.76 over to 3.73 yet everything is back ordered.  I am currently geared in 3.23 and my shop is saying the 917A732 is the correct part number for 3.42 and higher without having to use a spacer since it has the correct carrier break and we are moving to the 3.73 gears.  Do you happen to remember if you used the 917A732 or 914A538?

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