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Did GM ever use a auburn posi?

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Old Oct 19, 2004 | 10:19 PM
  #1  
88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
Did GM ever use a auburn posi?

I was searching E-bay for a posi and someone is selling a OE takeoff auburn posi for a 7.5'' rear-end. Did that ever really exist? If it is real I may but it. Maybe the SS's and TA's got it?!
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Old Oct 19, 2004 | 10:51 PM
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
The 4th gen SS's and WS6's got it as an SLP option. I don't believe it was "standard" on either the SS or the WS6, but most of them got it anyways.
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Old Oct 19, 2004 | 11:04 PM
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
As Duron said it was an SLP option for 4th gen cars. Most SLP cars do not have it though since it was a $500 option. I think Auburn made some mass run units for GM back in the early LT1 era. They then switched over to the torsion units. I am sure someone will correct me on that.
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Old Oct 19, 2004 | 11:19 PM
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From: Elgin, IL
Car: 1997 Corvette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73 IRS
Hmm I was thinking many had the Auburn unit. Either way, I know it was an option on the SS and WS6.
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Old Oct 20, 2004 | 12:59 AM
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88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
Think this is a good or bad deal??

http://cgi.ebay.com/ebaymotors/ws/eB...category=33731
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Old Oct 20, 2004 | 01:16 AM
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ME Leigh's Avatar
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From: Valley of the Sun
Car: 82 Z28
Engine: Al LT1 headed LG4 305
Transmission: TH350
Axle/Gears: 3.73 posi with spacer
First you need to find out how many spline axles you have and what your gear ratio is.
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Old Oct 20, 2004 | 01:23 AM
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88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
I have a extra 28 spline rear-end for this swap. And I am getting 3.73s more than likely.

I had an slp posi along time ago...sold it.

Then I stockpiled parts over the summer. Had a panhard rod, springs, all the front end parts, torque arm bushing, slp posi, motive 3.73 gears, intall kit...all kinds of crap. Decided to sell the car...parts sold but the car didn't. So I got it painted and reinstalled the AC.

So this is gonna be my third shot at getting some better gears and a posi unit in this poor car.
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Old Oct 20, 2004 | 06:44 AM
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From: Loveland, OH, US
Car: 4
Engine: 6
Transmission: 5
That is the newer style one; it was stock in some of the LT1 cars, from about 94-97 or thereabouts. SLP used to sell them as take-outs, like they did the Torsens that they recently ran out of, from when they put upgraded ones in.
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Old Oct 20, 2004 | 06:46 AM
  #9  
blacksheep-1's Avatar
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From: st. Petersburg, Fla
Car: 83 Z28
Engine: vortec 305 for now
Transmission: 5 speed
try these guys, they're really good to work with. I've been running their stuff for years.
http://reiderracing.com/rtech_diffs.htm
I have given you the link that defines the different types of diffs, you'll have to go to their home page to check out the catalog.
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Old Oct 20, 2004 | 10:15 AM
  #10  
88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
I will have to call them and see how their prices are. I am trying to find a decent differential that will not break the bank to bad.
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