Australian Rear End
09-29-2007, 01:25 AM
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Australian Rear End
Does anyone know when exactly Pontiac started using the stronger 9" Borg Warner rear, and when they quit using it?
Also, how hard are these to find, if one want's to put one on a later year 3rd generation 'Bird.
Thanks
Also, how hard are these to find, if one want's to put one on a later year 3rd generation 'Bird.
Thanks
09-29-2007, 01:28 AM
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Car: 1984 Z28 Hardtop
Engine: 383 Carb
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Axle/Gears: 3.54 Dana 44
Re: Austrailian Rear End
They started in 85 and ended in 89. They're common enough, but parts for them aren't.
09-29-2007, 01:34 AM
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Re: Austrailian Rear End
Is there a difference enough to trouble putting one on a 91 GTA? Or is it easier to just get a new aftermarket kit?
09-29-2007, 01:54 AM
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Re: Austrailian Rear End
Street use, maybe everyday. I'd like to get about 350-375 Hp out to thru the rear, good for scaring mustangs and such. I also intend to drop in a 93-97 T56 6 speed, which I figured would help on the highway.
Not going to punish or beat on the car, just want the fire there when I want it, while being streetable.
Did they make that rear in a 3.43?
Not going to punish or beat on the car, just want the fire there when I want it, while being streetable.
Did they make that rear in a 3.43?
09-30-2007, 07:47 PM
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Re: Australian Rear End
3.70 was a GM ratio as well, but AFAIK EXTREMELY EXTREMELY RARE; it only came in the 85 (and if there were any, maybe the 86) L69 Pontiacs.
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09-30-2007, 09:33 PM
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Car: 87 GTA
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Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: Australian Rear End
They were standard on the GTAs. Both of my GTAs are 3.27. All 9-bolts were limited slip & disc. Stronger than a 10-bolt, but weaker than a 9". For 350hp, you'd be fine with a 9-bolt.
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