What rear end is this?
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Joined: Mar 2006
Posts: 4,098
Likes: 13
From: WINDSOR, CO
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
What rear end is this?
I happened to run across are car that is being parted here locally, and the adjustable torque arm caught my eye... then noticed the cover is not a 10 bolt. It this a 12 bolt? Looks like my buddies S60
Might have to try and scoop it up. Used rear end... Anything I should check before putting it in the truck?
Might have to try and scoop it up. Used rear end... Anything I should check before putting it in the truck?
Supreme Member
Joined: Jan 2009
Posts: 2,313
Likes: 115
From: belle fourche,s.d.
Car: '82 z28
Engine: L83 5.7
Transmission: 700r4-1985
Axle/Gears: 3.42 posi
Re: What rear end is this?
that is a borg warner 9-bolt,found stock on some '85-89 thirds-especially
trans ams.
trans ams.
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iTrader: (5)
Joined: Mar 2011
Posts: 2,893
Likes: 4
From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
Re: What rear end is this?
Is it a 12-bolt? 
Does it has.....I dunno.....12 bolts in the rear cover, or just 9?
I can't see the full rear end cover in your pic, but I'm betting that it is a 9-bolt since it has the rubber plug for the Inspection/Fluid Fill hole in it.
Does it has.....I dunno.....12 bolts in the rear cover, or just 9?I can't see the full rear end cover in your pic, but I'm betting that it is a 9-bolt since it has the rubber plug for the Inspection/Fluid Fill hole in it.
Joined: Oct 2001
Posts: 12,219
Likes: 1,141
From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: What rear end is this?
As said above.
The rubber plug says its a aussie 9bolt.
Used in 350, 305 5sp TPI camaro IROCs/Zs, T/As, Formulas,GTAs and 3.8 TTAs from 85ish to 89.
The 89s have the best rear brakes, PBRs, The iron caliper rears are not so good, just because of the brake setup. The rest is the same.
The rubber plug says its a aussie 9bolt.
Used in 350, 305 5sp TPI camaro IROCs/Zs, T/As, Formulas,GTAs and 3.8 TTAs from 85ish to 89.
The 89s have the best rear brakes, PBRs, The iron caliper rears are not so good, just because of the brake setup. The rest is the same.
Thread Starter
COTM Editor
iTrader: (11)
Joined: Mar 2006
Posts: 4,098
Likes: 13
From: WINDSOR, CO
Car: 91 Z28, 87 SC, 90 IROC, 92 RS
Engine: LS1, 305 TPI, L98, NADA
Transmission: T56, 700r4's, and NADA
Axle/Gears: 3.89, 3.42, 3.23, NADA
Re: What rear end is this?
Thanks guys! Yeah I wouldn't have even asked if I could count all the bolts... thanks 
CL pics suck.
Yeah Just didn't want to waste my time driving a couple hours if it wasn't worth it, and it appears now that it is not worth running down and picking up. Thanks again for the quick reply.
CL pics suck.Yeah Just didn't want to waste my time driving a couple hours if it wasn't worth it, and it appears now that it is not worth running down and picking up. Thanks again for the quick reply.
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iTrader: (5)
Joined: Mar 2011
Posts: 2,893
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From: Central Texas
Car: GTA
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Aussie 9-bolt/3.27 posi
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