Differential Question

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Aug 28, 2010 | 06:53 PM

96Blazernut

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From: Keene NH

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Differential Question

Will the G80 unit from the Blazer fit the TrailBlazer? Thanks.

Aug 28, 2010 | 07:05 PM

NVANZEE

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Joined: Jan 2008

Posts: 1,631

From: Grand Rapids, Michigan

no, i think the trail blazers have a 9in rear end

Aug 28, 2010 | 07:39 PM

96Blazernut

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Junior Member

Joined: Jan 2009

Posts: 475

From: Keene NH

I just did some research and I'm pretty sure its got a 8.5 diff in it. I'd like to put a G80 in it. But I'm happy with it now though. This is a project for later on.

Aug 28, 2010 | 08:22 PM

NVANZEE

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From: Grand Rapids, Michigan

I would think so as long as the blazer has an 8.5 rear end instead of the 7.625

Aug 28, 2010 | 08:40 PM

swartlkk

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Joined: May 2005

Posts: 41,332

From: Waterloo, NY

Yep, the GMT360 platform has the 8.5" diff.

Aug 28, 2010 | 08:49 PM

96Blazernut

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Joined: Jan 2009

Posts: 475

From: Keene NH

Thanks for the quick replies. I have owned several S Series but this is my first TrailBlazer.

Oct 3, 2010 | 12:01 AM

DZP

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Joined: Oct 2010

Posts: 3

From: Saint Charles, Missouri

The short wheelbase I6 models have an 8" differential. The EXT and V8 short wheelbase vehicles have an 8.6" differential. I highly reccommend replacing your 8" with an 8.6" as they are much stronger and a direct bolt in. Trust me that is what I did when mine failed in my 2003 TrailBlazer.