9 bolt disc brakes?
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
9 bolt disc brakes?
Hey guys, I'm shopping for new brake parts (rotors and pads) for the 9 bolt rear end I picked up for my car. I'm shopping online for 88 firebird parts (mines a 91 but I was told my axle came off of an 88 G92 formula), and I'm just afraid to order the wrong parts. Is there a difference between 9 and 10 bolt disc brake components? The only note rock auto has on their website is whether they're 1LE parts or not.
Last edited by musclecar70sfan; Feb 17, 2013 at 01:20 PM.
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From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 9 bolt disc brakes?
The brackets are different. You need to know if it's 1Le or not. What diameter are the rotors and are the calipers both behind the axle or is one in front and the other behind? The code would be a guide but only looking is for sure.
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: 9 bolt disc brakes?
I'm pretty certain it's not a 1LE axle. And yeah I have one caliper facing the front and the other faces the back.
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: 9 bolt disc brakes?
I'm only trying to buy the pads and rotors anyway, calipers seem reusable.
Joined: Aug 1999
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From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
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iTrader: (1)
Joined: Jun 2009
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Supreme Member
iTrader: (1)
Joined: Sep 2010
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From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 9 bolt disc brakes?
The ones you've got are Delco Moraine "iron caliper" with 10.5" discs. The 1Le are aluminum calipers with 11.6" discs.
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Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Thread Starter
Supreme Member
iTrader: (1)
Joined: Jun 2009
Posts: 1,777
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: 9 bolt disc brakes?
Ah I see, so seeing that I DON'T have aluminum calipers, there's no chance that my rear end is any newer than 1988 correct? Because I was told that 88 was that rear's approximate year when I bought it; the seller wasn't 100% sure.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Thread Starter
Supreme Member
iTrader: (1)
Joined: Jun 2009
Posts: 1,777
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: 9 bolt disc brakes?
Gotcha, well thanks for the help guys! Looks like Internet shopping spree time tonight haha!
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Car: 85 Z28 T-Top 36mm sway & wonderbar
Engine: TPI L98 350 W/85 Vette Stage II ECM
Transmission: W/C T-5, alum drive shaft
Axle/Gears: 9 bolt posi, 3:27, PBR's, BB LS1's
Re: 9 bolt disc brakes?
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From: Central Connecticut
Car: 91 Trans Am 'vert
Engine: LB9
Transmission: T5
Axle/Gears: 3.45 9 bolt
Re: 9 bolt disc brakes?
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From: Cincinnati, Ohio
Car: 1984 Camaro Sport Coupe
Engine: 350 SBC
Transmission: 700R4
Axle/Gears: 3.27
Re: 9 bolt disc brakes?
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From: Georgetown TX
Car: Base 91 'bird
Engine: 3.1 v6
Transmission: 4L60
Axle/Gears: 9-bolt 3.27 & PBR
Re: 9 bolt disc brakes?
Flynbye.com is one place. Components or the whole kit. The kit is expensive but it's complete and shiny.
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