whats the difference with ZR2 rear end and my LS rear end?

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07-23-2010, 11:04 AM

brino1

Beginning Member

Thread Starter

Join Date: Nov 2009

Posts: 20

whats the difference with ZR2 rear end and my LS rear end?

Thinkin about doin a detroit locker in my 2000 LS 2 door.what is different in a ZR2 blazer rear end???did GM put a locking diff in blazers??

07-23-2010, 12:21 PM

RangerG

Super Member

Join Date: Jul 2009

Location: Edmonton, AB

Posts: 1,259

http://www.s10extremist.org/tech_art...comparison.htm

Here are all the differences.

07-23-2010, 12:22 PM

swartlkk

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Join Date: May 2005

Location: Waterloo, NY

Posts: 41,137

The ZR2 had the larger (& wider) 8.125" ring gear 10-bolt diff while your truck has the 7.625" ring gear. The ZR2 axle will bolt in. It may or may not have the G80 "gov-lock" differential.

A power-trax drop in locker into your stock open carrier would be the easiest and cheapest approach to take.

02-05-2011, 11:30 PM

streblo

Senior Member

Join Date: Nov 2007

Location: Manitoba, Canada

Posts: 689

Really, the ZR2 May or may not have a g80???? I would think that they would put a g80 in all zr2's.

02-25-2011, 11:02 AM

rbrace

Beginning Member

Join Date: Dec 2009

Posts: 33

The ZR2 is not the only blazer with a stock 8.5 Ring Gear
I have a 2001 2dr ls Blazer 5 Speed with a 8.5 Ring Gear
i had to get my rear axle out of state because the Zr2
axle is longer and the other axles are a 28 spline
my axles / the zr2 are 30 spline