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4th gen rear in a 3rd gen (pics)

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Old Jan 31, 2004 | 10:25 PM
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ssxmac's Avatar
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From: west michigan
Car: 89 RS
Engine: lo3
Transmission: 700R4 w/ B&M shift improver
Axle/Gears: 3.27 9-bolt posi
4th gen rear in a 3rd gen (pics)

I've been looking for a new rear end for my car as the 2.73 peg leg just isnt cutting it anymore. Im having a real hard time finding a complete rear that is a 3.42/3.73 posi thats out of a 3rd gen, either on TGO classifieds, or on ebay.

I have however come accross several 4th gen rears that fit my critiriea. now i know that they fit. And IIRC i read that they bolt right in. The only problem is that the wheels will stick about an inch and a half out on each side. that doesnt seem like that much to me, but i'd like to see some pics if anyone has any. also is there a way to remedy this 1.5 inch problem?

thanks,
-chuck
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Old Feb 1, 2004 | 01:49 AM
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Chuck!'s Avatar
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From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
Get 4th gen wheels, thats what i did Let me look and see if I have any, but I dont think I do. It's a direct bolt in, but I couldnt figure out the parking brake cables. When I get some time with the car I'll have to fix that.
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Old Feb 1, 2004 | 11:48 AM
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From: west michigan
Car: 89 RS
Engine: lo3
Transmission: 700R4 w/ B&M shift improver
Axle/Gears: 3.27 9-bolt posi
ive got a 700R4 so the parking brake isnt the biggest deal. I cant imagine the design on that changed too much anyway.

Those pics would be great, especially if youve still got some w/ your thrid gen wheels on it. I've been looking for an excuse to buy new wheels and this may be it. But i really know nothing about tires and wheels and what not so thats another thing i'd have to research. I think backspacing is what im thinking about, is that the biggest difference on the wheeles in a 3rd/4th gen? that would be why the wheels will fit under the car even with a longer axel.

IDK, those pics would be great, thanks
-chuck
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Old Feb 4, 2004 | 09:17 PM
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From: Tuckerton, NJ
Car: 89 T/A
Engine: 305 TBI (Hopefully LS1 someday)
Transmission: 700 R4 (T-56 is planned too)
I did it. Got a 98 z28 Rear on my 89 Trans Am. When the part comes in for my broken digital camera, I can get you a picture (been backordered for about a month now). There's plenty of guys on here that have them though. Try the drivetrain tech board.

(sig pic is before rear swap)
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Old Feb 4, 2004 | 09:20 PM
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From: Tuckerton, NJ
Car: 89 T/A
Engine: 305 TBI (Hopefully LS1 someday)
Transmission: 700 R4 (T-56 is planned too)
I took the parking brake mounting bracket off the 98 to put on mine, when I get to it. It's spot welded in a million spots. Pain in the A$$.
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Old Feb 5, 2004 | 10:15 AM
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Chuck!'s Avatar
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From: Dayton, O.
Car: 91 Camaro Z28
Engine: LS7
Transmission: M12/T56
Axle/Gears: 3.79
What cables did you use, the 98s?
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Old Feb 5, 2004 | 01:24 PM
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ssxmac's Avatar
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From: west michigan
Car: 89 RS
Engine: lo3
Transmission: 700R4 w/ B&M shift improver
Axle/Gears: 3.27 9-bolt posi
Originally posted by Wilburwm
I did it. Got a 98 z28 Rear on my 89 Trans Am. When the part comes in for my broken digital camera, I can get you a picture (been backordered for about a month now). There's plenty of guys on here that have them though. Try the drivetrain tech board.
duh,

sometimes i forget there is more to TGO then the TBI board.

well i did a quick search and guess what?! i found my pic on the first try. If anyone else wants to see it, its about halfway down this thread.

https://www.thirdgen.org/techbb2/sho...n+rear+3rd+gen

thanks for reminding me once again that this site, has every piece of info i could ever need to know about my car.

-chuck
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Old Feb 5, 2004 | 02:49 PM
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From: Tuckerton, NJ
Car: 89 T/A
Engine: 305 TBI (Hopefully LS1 someday)
Transmission: 700 R4 (T-56 is planned too)
yes, the 98's, but they are sitting on my desk still. The 89's have a ball on the end, and the 98's have a hook type deal. I had drum brakes, but I looked at the disc brake cables too.

Your welcome, I knew that pic was in there somewhere
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