Suspension and Chassis Questions about your suspension? Need chassis advice?

Brake Retrofit?

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Old Dec 14, 2002 | 05:40 PM
  #1  
ploegi's Avatar
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From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Brake Retrofit?

Well, it seems that my BW rearend has finally bitten the dust. As parts for this rearend seem to be rarer than an honest polititian, I have elected to simply replace the whole thing. The plan is to rebuild the GM rearend I have out of another firebird (also disk brake) with upgraded brake parts. The question is this....

1. Can I simply scavenge the brakets/calipers/cables etc. off of a 94 or newer disk brake rear, and bolt them onto my GM rear? Or is the bolt pattern different?

2. Barring that, what would be the best alternative?????

Any input is appreciated. I checked the archives on this subject, but came up with either nothing, or more results than I could possibly check......
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Old Dec 15, 2002 | 05:08 PM
  #2  
ANDYZ28's Avatar
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From: Midlothian,VA. 23112-6108
Car: 1982 Z-28
Engine: 5.0 w/ Holly carb
Transmission: TH-700R4
I must ask you a coulple of questions before I can give you an answer.

1) What year is the doner 10 bolt rear from?

2) What year is the 9 bolt?

3) Do you wish to have the '89 and later PBR type rear disc brakes when you are done?

Thanx,ANDYZ28
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Old Dec 15, 2002 | 10:50 PM
  #3  
Dyno Don's Avatar
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From: Orange, CA
Car: '90 Trans Am-12.45@110.71
Engine: 355 w/AFR 195's Elem. 400/430 HP/TQ
Transmission: Tremec T-56
Axle/Gears: 12 Bolt 3.73
If you are using a 10 bolt w/disc's, yes you can up to '97. Requires making brkt. for e-brake cables.
Even the '98 and up will work if you don't mind a little work making the cables fit(new e-brake brkt's). I have done quite a few. I even made the LS1 brakes fit my BW. See sig.
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Old Dec 24, 2002 | 11:11 AM
  #4  
ploegi's Avatar
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Joined: Jul 1999
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From: Adrian, Mi, USA
Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
I have not yet found a donor rear end.

I am hoping to use a GM 10 bolt from a 86 Trans-Am, I seem to have one lying around.... (I scrapped a bunch of F-Bodys several years ago, and still have some parts left.......)

I am hoping to do the best upgrade that I can. I am not entirely sure which year had the best brakes, and am open to suggestions.

Thanks
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Old Dec 24, 2002 | 07:03 PM
  #5  
dunnb's Avatar
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Joined: Apr 2002
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From: SE PA
MOSER 12 BOLT IS THE WAY TO GO
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