Transmissions and Drivetrain Need help with your trans? Problems with your axle?

7.5 gm auburn 26 spline posi

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Old

Jan 18, 2011 | 07:27 PM

#1

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Joined: Mar 2010

Posts: 128

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From: ON, Canada

Car: 1987 Camaro Sport Coupe

Engine: 2.8 MPFI

Transmission: 5-Speed Standard

Axle/Gears: 3.42

7.5 gm auburn 26 spline posi

Will this replace my unit in my 1987 2.8 t5 Sport Coupe w/3:42 open diff?

I want to upgrade to posi and want to know if thats what I need? Thats cut and paste from an add.

Thanks

Old

Jan 18, 2011 | 08:23 PM

#2

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Re: 7.5 gm auburn 26 spline posi

Pass on the Auburn. There are much better differentials out there. The Eaton Posi would be a great choice, and the Duragrip is also a great choice for a little less money.

Old

Jan 21, 2011 | 08:14 PM

#3

Junior Member

Joined: Jul 2010

Posts: 13

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From: il

Car: 91 camaro rs

Engine: 305 tbi

Re: 7.5 gm auburn 26 spline posi

i have a 91 rs w/ 305 and open rear and want to put a posi in. Will the duragrip fit right in place of the old dif?

Old

Jan 22, 2011 | 12:54 AM

#4

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Joined: Sep 2008

Posts: 3,777

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Re: 7.5 gm auburn 26 spline posi

You will have to shim it to set the backlash and bearing preload, but that has to be done no matter what differential you use.

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