how to re-gear a GM 8.6" 10-bolt axle

how to re-gear a GM 8.6" 10-bolt axle

It’s time to ditch the stock 3.42’s in favor of some @Nitro Gear 4.30’s along with a TrueTrac for the UglyTruck. It can be a bit overwhelming if you’ve never attempted this on your own, but it’s not as bad as it sounds, you just need to be patient and persistent, and you can get it. I go over setting pinion depth without any special tools, pinion bearing preload, carrier backlash, and more as I rebuild the rear axle in this 2000 Silverado.

The biggest challenge to any ring and pinion install is setting the pinion depth, and I don’t have any of the special tools or fixtures required to measure pinion depth, so I go over another technique of setting it using a visiual of the gear wear pattern. Some may say its not as accurate as a perfectly measured housing, but you can get close, it does just take a but more time. Once you have the pinion depth figured out, the bearing preload is pretty easy with a crush collar, and the backlash is just a matter of finding the right combination of shims.

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Parts Used from Amazon
TrueTrac Posi for GM 8.5/8.6 10-bolt
https://amzn.to/3383AjC

4.30 gears
https://www.amazon.com/gp/product/B00L2I6LTS/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=ll1&tag=lawrencetolma-20&linkId=067fc98fba0c0499225a2a55d96b2c98&language=en_US

Master Install Kit
https://www.amazon.com/gp/product/B0078U94S4/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=ll1&tag=lawrencetolma-20&linkId=49367a53d1ea63047cfe81d9f616533c&language=en_US

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Comments

Sean Lutzi says:

very well explained, easy to follow…. awesome demontration thanks man makes it less scary to achieve good results!!

Kush G says:

I want to gear to 4.10 I was planning on running 315 tires what’s your option on that combo also could I regear to 4.10 and run stock size tire 255 . Note I have the 4l60e

El Chaps says:

I would like to know the part number for the setting bearings please

The Combat Engineer says:

Damn I didn’t know you had your own channel! Stoked I found ya brother and time to binge a few videos!

Dat Boi says:

does putting new gears reduce mpg?

Lew-e says:

im watching this and thinking to myself "You know what, this is my daily, I'll just pay someone to do it" lol

xSCHOBELx says:

Thought I might try and attempt this myself. Nevermind

Daniel Aguirre says:

Dude, you have a great voice, and a great way of explaining things. You should have your segment on PowerNationTV.
Great video bro. Thank You

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