Transmissions and Drivetrain Need help with your trans? Problems with your axle?

Dont know what I need for my rear end

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Old Feb 27, 2007 | 06:34 PM
  #1  
lschweit's Avatar
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Joined: Feb 2007
Posts: 6
Likes: 0
Car: 91 Firebird RS
Engine: L03
Transmission: 700-R4
Axle/Gears: 2.73
Dont know what I need for my rear end

I have a 91 rs with 2.73 and no posi I want to have 3.73 with posi. What do I need? Do i need a new differential and gears? if so any suggestions where to get the parts? I am looking to save a couple bucks would a junkyard be worth it or am I just going to have trouble in the long run? Thanks a lot for your help!
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Old Feb 27, 2007 | 07:02 PM
  #2  
krisb410's Avatar
Supreme Member
15 Year Member
iTrader: (9)
 
Joined: Nov 2005
Posts: 2,346
Likes: 1
From: Naples, FL
Car: 91 RS Camaro, 75 L82 Corvette
Engine: LO3, 383 Stroker
Transmission: 700R4, TH400
Axle/Gears: 4th gen 3.23 posi/LS1 discs, stock
You can look in the junkyard for rear ends. It's way easy to swap the whole rear housing rather than swaping the gears in and out.

Oh yeah welcome to the boards.

If you do a search, you'll find so many write ups on this it isn't even funny.
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Old Feb 27, 2007 | 09:29 PM
  #3  
shagndaddy's Avatar
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Joined: Feb 2007
Posts: 7
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From: peru,il
Car: 1987 IROC
Engine: 305 TPI
Transmission: auto
Axle/Gears: 2.73
yes you will need a new differential and gear to get the posi and 3.73
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Old Feb 27, 2007 | 09:38 PM
  #4  
lschweit's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2007
Posts: 6
Likes: 0
Car: 91 Firebird RS
Engine: L03
Transmission: 700-R4
Axle/Gears: 2.73
Thanks a lot I appreciate the help
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