[Sold] 9 bolt
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From: Tennessee
Car: Firebird Formula
Engine: 5.7
Transmission: T5
Axle/Gears: 3.42
9 bolt
9 bolt rear, 3.27 gear, posi still works. Has 4th gen PBR brakes installed $100.00. Located 32780 (Florida), contact tim726@cfl.rr.com
Last edited by tim726; Sep 24, 2009 at 11:40 PM. Reason: sold
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 9 bolt
FYI....89-92 9-bolts came stock with PBR brakes, so yours aren't "4th gen brakes".
Joined: Jun 2000
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From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt
I thought 90s up didn't have 9 bolts anymore? I know of 2 5.7 GTAs, a 90 and a 92 that both have a 10 bolt.
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From: Alamogordo, NM
Car: 88 Formula 350
Engine: 5.7
Transmission: T-56
Axle/Gears: 9" 3.89
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 9 bolt
Regardless of the 90-92 debate...89 GTA came with PBRs on 9-bolts stock. I sold one a couple years ago.
It is my understanding, there was a 9-bolt shortage in the end, so yes...Some late GTAs ended up with 10-bolts.
It is my understanding, there was a 9-bolt shortage in the end, so yes...Some late GTAs ended up with 10-bolts.
Joined: Jun 2000
Posts: 5,364
Likes: 51
From: Enschede, Netherlands
Car: 82 TA 87 IZ L98 88 IZ LB9 88 IZ L98
Engine: 5.7TBI 5,7TPI 5.0TPI, 5,7TPI
Transmission: T5, 700R4, T5, 700R4
Axle/Gears: 3.08, 3.27, 3.45, 3.27
Re: 9 bolt
I think it's got to be in 90 too that they switched over, 91 & 92 didn't have it an the last 90 I looked at had a 10 bolt too. it was a fully documented car so the rear was stock.
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Joined: Apr 2009
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From: Tennessee
Car: Firebird Formula
Engine: 5.7
Transmission: T5
Axle/Gears: 3.42
Re: 9 bolt
My 88 GTA had the 9 bolt, but with the old metric brakes that had the 'racheting' e-brake that quit working probably 20 years ago !
Last edited by tim726; Sep 9, 2009 at 05:12 PM.
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iTrader: (12)
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 9 bolt
Not 1990......
1987:
2.73 : 1, 3.23 : 1 (MXO), 3.08 : 1, 3.45 : 1 (MM5)
1988:
3.27 : 1 (MXO), 3.08 : 1, 3.27 : 1, 3.45 : 1 (MM5)
1989:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.45 : 1 (MM5)
1990:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.45 : 1 (MM5)
1991:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.42 : 1 (MM5)
1992:
3.08 : 1, 3.23 : 1 (MXO), 3.42 : 1 (MM5)
3rd gen 9-bolts came with PBRs after 89.......
1987:
2.73 : 1, 3.23 : 1 (MXO), 3.08 : 1, 3.45 : 1 (MM5)
1988:
3.27 : 1 (MXO), 3.08 : 1, 3.27 : 1, 3.45 : 1 (MM5)
1989:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.45 : 1 (MM5)
1990:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.45 : 1 (MM5)
1991:
3.08 : 1, 3.23 : 1, 3.27 : 1 (MXO), 3.42 : 1 (MM5)
1992:
3.08 : 1, 3.23 : 1 (MXO), 3.42 : 1 (MM5)
3rd gen 9-bolts came with PBRs after 89.......
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 9 bolt
Actually they are; the rear is out of an 88 GTA. I purchased the rear brakes with a 4th gen Camaro 10 bolt, and caliper brackets for the 9 bolt from Flynbye LLC !
My 88 GTA had the 9 bolt, but with the old metric brakes that had the 'racheting' e-brake that quit working probably 20 years ago !
My 88 GTA had the 9 bolt, but with the old metric brakes that had the 'racheting' e-brake that quit working probably 20 years ago !
In other words, it was only upgraded to the same as later year 9-bolts.
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Joined: Apr 2009
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From: Tennessee
Car: Firebird Formula
Engine: 5.7
Transmission: T5
Axle/Gears: 3.42
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: 9 bolt
You updated a 88 9-bolt rear to 89 brakes by putting n 4th gen brakes, that are really only the same as 89+ 9-bolt brakes.
Still have the smaller 27-spline axles in it? Or did up update to the bigger axles too?
Last edited by Stephen; Sep 9, 2009 at 05:39 PM.
Thread Starter
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Joined: Apr 2009
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From: Tennessee
Car: Firebird Formula
Engine: 5.7
Transmission: T5
Axle/Gears: 3.42
Re: 9 bolt
All stock except the brakes !
Thread Starter
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From: Tennessee
Car: Firebird Formula
Engine: 5.7
Transmission: T5
Axle/Gears: 3.42
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From: Milwaukee, Wisconsin
Car: 1987 IROC-Z
Engine: 383 with Edelbrock ProFlow EFI
Transmission: TH350
Axle/Gears: 12 bolt 3.73 Eaton posi
Re: 9 bolt
ok, bot!
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