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

4TH Gen Carrier??

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Old Mar 20, 2002 | 09:13 PM
  #1  
Keith27's Avatar
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From: Conroe,TX
4TH Gen Carrier??

Will a 4Th Gen posi carrier fit in my 91 Formula??

I want to get rid of the one-legger and there alot of 4Th genz in the bone yardz.

Thankz
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Old Mar 21, 2002 | 03:34 AM
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ebmiller88's Avatar
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
If your gears are OK, and 3.23 or higher, just drop in a SLP take-off posi. You already have 28 slpine axles, it'll fit right in there.

www.slponline.com, $84.95

I don't know what the boneyards are getting though.
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Old Mar 21, 2002 | 06:28 PM
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From: Conroe,TX
Its a 91 so its got 30 splines and its a 2.73
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Old Mar 21, 2002 | 08:11 PM
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
30 spline stock axles? Not saying you're wrong, but I've never heard of stock 30 spline axles. I have the same rear in my '91 RS and I have the 28 spline.

Anyone else??
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Old Mar 21, 2002 | 10:16 PM
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From: Conroe,TX
My-bad your right, pre 88 was 26 spline and 28 after that.
But I still have 2.73, I just want to know if the carrier will fit in our cars from a 4th gen?

Thankz
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Old Mar 22, 2002 | 02:22 AM
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From: Fort Mill, SC, USA
Car: '88 Iroc, '91 RS, and a '70 RS
Engine: 5.7 TPI; 5.0 TBI; ZZ4/T56 on the ag
Transmission: A4, A4, slated to be a T56
As long as it's the 7.5/7.625" 10 bolt, it'll fit.
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Old Mar 23, 2002 | 07:51 PM
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From: USA
Car: yy wife, crazy.
Engine: 350, Vortecs, 650DP
Transmission: TH-350
Axle/Gears: 8.5", 3.42
I dunno where you're getting this, or how much you're paying, but a little trick I've used is this. The carrier is the same for all rear wheel drive cars after 1990. So if you go to the junkyard and get one out of a S-10 or Caprice, or whatever, then the junkyard will charge less for it. Well the one by my house does.

AJ
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