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

4th gen rear to 3rd gen

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Old Feb 10, 2003 | 12:36 AM
  #1  
badgta's Avatar
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From: KY
Car: 1991 FORMULA
Engine: ZZ4 + LT4 HT CAM 430HP
Transmission: 700-R4 COMING T56
Axle/Gears: 9" 4.56's (COMING)
4th gen rear to 3rd gen

well since the search is toasted i figure id ask the question here.....

i was wonder how diffucult is it to put a 4th gen rear personally a 12 bolt from a ss camaro in my ta......... i figured if i can get it for say 200, then it would be worth it....... i hope it has at least 3.73's in it....

how diffucult would this task be in your opionions?
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Old Feb 10, 2003 | 01:28 AM
  #2  
RedFirebird's Avatar
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From: San Rafael, CA
Car: 1988 Trans Am GTA
Engine: 5.7L TPI (L98)
Transmission: 700RJunk
I don't think any fourth gens come with 12 bolts. They're all the same weak 7.5" (or 7.625"...don't know specifically) 10 bolts. And I don't think any of them come with 3.73 gears anyway. Besides that, they are a direct bolt-in, but they are wider, which means you might need different rims if you want your car to look "right". What kind of rear-end do you have now?
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Old Feb 10, 2003 | 06:21 AM
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badgta's Avatar
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From: KY
Car: 1991 FORMULA
Engine: ZZ4 + LT4 HT CAM 430HP
Transmission: 700-R4 COMING T56
Axle/Gears: 9" 4.56's (COMING)
hmmm

i thought the firehawks and ss's came with moser 12 bolts from slp???
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Old Feb 10, 2003 | 02:24 PM
  #4  
84 1LE's Avatar
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From: Oyth
Car: 89RS vert
Engine: Erod
Transmission: 4L65e
Axle/Gears: BW, 3.27
I THOUGHT THEY CAME WITH DANA 44s.
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Old Feb 10, 2003 | 03:30 PM
  #5  
slayer2000's Avatar
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From: kentucky
Car: 1990 GTA
Engine: L98
Transmission: manual/t56
I bought the rear out of a 99 ss and it was a 10 bolt. It did have 3.73 with a torsen limited slip.
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Old Feb 10, 2003 | 10:09 PM
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From: Mass
Engine: 350 TPI
Transmission: A4
Axle/Gears: 3.23
badgta, i dont know where you get your info from but there never was a 12 bolt installed in any 3rd or 4th gen fbody from the factory as a general car. the firehawks, Ws6, ans SS cars have a better posi unit from SLP installed. also, no 3.73's where offered either,IIMC. the 4th gen rear in my car came from my last car, a 97 ws6 trans am. it had 3.42's in it from SLP
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