Rear diff cover for 3.73 (GT4) with G80

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Jan 30, 2019 | 07:26 PM

Mike.308

Thread Starter

Senior Member

Joined: Nov 2017

Posts: 746

From: Poland

Rear diff cover for 3.73 (GT4) with G80

Howdy all,
I am trying to address the proper rear differential cover for my diff. My axle is 3.73 with G80 10 bolts.Is it 7.5" size one?
Thanks in advance,
Mike

Jan 31, 2019 | 06:56 AM

swartlkk

Administrator

Joined: May 2005

Posts: 41,332

From: Waterloo, NY

If your avatar picture is your truck, then it most likely is the 7.5/7.625 diff. ZR2 trucks had the larger 8.5" 10-bolt as did some manual transmission s-series trucks, but not many. So if your truck is a non-ZR2 and still has the originally equipped axles under your truck, then it'll be the smaller 7.5/7.625 axle.

CLICK HERE for a past thread that has some pictures to help you correctly identify the differential.