Blazer Forum - Chevy Blazer Forums - Differential Question

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- TrailBlazer GMT360/GMT370 (2002-2009) Tech (https://blazerforum.com/forum/trailblazer-gmt360-gmt370-2002-2009-tech-43/)

- - Differential Question (https://blazerforum.com/forum/trailblazer-gmt360-gmt370-2002-2009-tech-43/differential-question-48435/)

96Blazernut

08-28-2010 06:53 PM

Differential Question

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

NVANZEE

08-28-2010 07:05 PM

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

96Blazernut

08-28-2010 07:39 PM

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.

NVANZEE

08-28-2010 08:22 PM

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

swartlkk

08-28-2010 08:40 PM

Yep, the GMT360 platform has the 8.5" diff.

96Blazernut

08-28-2010 08:49 PM

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

DZP	10-03-2010 12:01 AM

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.

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