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Question about rear I just bought. Posi or not?

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Old Feb 27, 2002 | 08:20 PM
  #1  
blue305rs's Avatar
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Joined: Nov 2001
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From: Woodside, De
Car: 1989 camaro RS
Engine: 305
Transmission: T-5
Question about rear I just bought. Posi or not?

Hi, I just picked up a rear. Disc brakes, supposed to be from an IROC. How do I verify it is posi???

This was the only identification on the housing:

GM N
22522676



Is there anyway for sure to tell if it is posi or not? I know its supposed to be from an IROC but it could not be.
thanks
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Old Feb 27, 2002 | 08:40 PM
  #2  
zupmanZ28's Avatar
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
just spin one tire (or hub if theres no tires mounted). If the other side spins the same direction it's posi, if not, it's an open rear.

BTW- where did you find it? i've been trying to get my hands on a posi for a while now but haven't been able to find anything.

Eric
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Old Feb 27, 2002 | 09:45 PM
  #3  
zippy's Avatar
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From: Chander, Arizona USA
Car: 2006 Silverado 1500
Engine: 5.3L
Transmission: 4L60E
if your not sure, i'd recomend just removing the cover and inspecting.
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Old Feb 28, 2002 | 01:46 AM
  #4  
Zepher's Avatar
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From: Norfolk, VA. USA
Car: 86 Trans Am, 88 Formula
Engine: 95LT4, 305TPI
Transmission: T56, T5
Originally posted by zupmanZ28
just spin one tire (or hub if theres no tires mounted). If the other side spins the same direction it's posi, if not, it's an open rear.

BTW- where did you find it? i've been trying to get my hands on a posi for a while now but haven't been able to find anything.

Eric
I just recently sold my posi 3.27 9 bolt disc rear for $250.
Now I got myself a posi 3.42 disc rear from a 95 Formula.

SLP sells posi's for $99.
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