Did a lot of drum rears come with POSI? What are my chances of getting ahold of one of these? Does anyone know of a site with axle codes/gear ratios?

Kelly

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If you've gotta fix it, fix it better than stock.

 

Tons of cars came with the drum posi's. I posted a classified add on this board and found one in the gears I wanted. Give it a try.

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87 Z28 305 TPI, Auto, 2.73, Gutted air boxes, K & N fillters, Dyno Max 3" cat back, Accel 8.8 mm spirals, Accel cap and rotor, Accel coil, rapid fires, and 160 Stat.
Best 15.414 @ 87.47

 

Sure, all GTAs have POSI, but not all have rear disks. I've noticed 1990 and 1991 GTAs have more Posi/drum combos than other years.

I have a Posi/drum 3.23 combo on my GTA.

 

i have rear drum with posi, 3.23 gears. it came stock on my 82 TA.

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RED82TA5.7L

1982 Pontiac Trans Am
Cross-Fire Injected 5.7l V8
Eldebrock Headers, 3" Hooker Cat-Back, duel outlet with quad tips.
Mods: 1.6 Proform Roller Rockers, electric fan, Corvette 5.7L computer chip, K&Ns.
Audio: JVC Kameleon CD deck, Jenson 4x6 front, Eclipes 6x9 rear, 2 10" mTx T4000 powered by a mTx 200watt amp.

 

i have rear drum with posi, 3.23 gears. it came stock on my 82 TA.
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RED82TA5.7L

Ditto... on my 82 Z28