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Old Feb 7, 2013 | 05:41 PM
  #1  
chevyv8guy's Avatar
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From: Niagara falls,ontario
Car: 84 firebird
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Transmission: 700r4 stage 2 shift kit 2500 stall
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Quick brake conversion question

So i have a disc brake rear end from an 84 firebird the housing is in rought shape but the axles and everything else are good(have it all apart) now my question is can i use my drum brake rear end for my 84 firebird and put all the disc brake stuff on it will everything bolt up what else would i need to do?

any and all information will be helpful thanks !!
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Old Feb 7, 2013 | 07:38 PM
  #2  
chevyv8guy's Avatar
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From: Niagara falls,ontario
Car: 84 firebird
Engine: 355
Transmission: 700r4 stage 2 shift kit 2500 stall
Axle/Gears: 3.42 posi
Re: Quick brake conversion question

Anyone?
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Old Feb 7, 2013 | 08:50 PM
  #3  
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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
Re: Quick brake conversion question

Originally Posted by chevyv8guy
So i have a disc brake rear end from an 84 firebird the housing is in rought shape but the axles and everything else are good(have it all apart) now my question is can i use my drum brake rear end for my 84 firebird and put all the disc brake stuff on it will everything bolt up what else would i need to do?
Check the 10-bolt FAQ (there's a section that covers brake conversion, parking brake cables, master cylinders, and combination valves).

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC
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Old Feb 8, 2013 | 05:22 PM
  #4  
chevyv8guy's Avatar
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Joined: Jul 2010
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From: Niagara falls,ontario
Car: 84 firebird
Engine: 355
Transmission: 700r4 stage 2 shift kit 2500 stall
Axle/Gears: 3.42 posi
Re: Quick brake conversion question

Originally Posted by JamesC
Check the 10-bolt FAQ (there's a section that covers brake conversion, parking brake cables, master cylinders, and combination valves).

https://www.thirdgen.org/forums/tran...-10-bolts.html

JamesC
thanks for all the information! now are these quotes more suited for what im doing?:

Are Drum/Disc Axles Interchangeable?
Yes, but the drum axle flange will have to be turned down to fit the rotor.* The flange diameter on the drum shaft is 6.0"; the disc shaft is 5.850" and the ID of the brake rotor is 5.900". (Oddly, there is no distinction made between drum and disc when ordering after market axles.)

Can I Swap Discs to My Drum Rear End?
Yes. Though the housing ends can be modified (https://www.thirdgen.org/ls1reardisc),
the easiest method is to purchase a kit from Ed Miller: http://www.flynbye.com/catalog/i30.html
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Old Feb 11, 2013 | 04:46 PM
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: Quick brake conversion question

Cut the flanges off (after measuring) using the caliper brackets as a template and drill 4 new holes. Did this on my '88. Had a built 10 bolt but it was drum, wanted the factory disc, didn't feel like getting '89+ PBR parts.

If it's out of center a little bit, that is not at all critical, as long as the pad rides within the friction surface of the rotor.

-- Joe
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Old Feb 11, 2013 | 06:56 PM
  #6  
chevyv8guy's Avatar
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From: Niagara falls,ontario
Car: 84 firebird
Engine: 355
Transmission: 700r4 stage 2 shift kit 2500 stall
Axle/Gears: 3.42 posi
Re: Quick brake conversion question

perfect! thanks for the info!
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