question about 3rd gen rear ends???
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From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
question about 3rd gen rear ends???
what are the measurements from wheel mounting face to other wheel face?
also i was wondering what rear end a car im thinking about getting has...
1988 GTA, 350tpi auto.
should it be the 9 bolt 3.27 gears with posi?
and should it have an aluminum driveshaft?
also i was wondering what rear end a car im thinking about getting has...
1988 GTA, 350tpi auto.
should it be the 9 bolt 3.27 gears with posi?
and should it have an aluminum driveshaft?
Thread Starter
Senior Member
iTrader: (3)
Joined: Aug 2006
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From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
Re: question about 3rd gen rear ends???
anyone know what they measure from wheel to wheel?
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: question about 3rd gen rear ends???
GTAs are generally 3.27 gears...All are posi, all are disc.
The aluminum driveshafts were a separate option & not specific to the rear end.
As for the width....I'm not real sure. The only thing I know is, the 4th gen rear are 1.75" wider per side, but I also hear the LS1 car rears are only .75" wider than the LT1 rears, but nobody has confirmed that.
TGO thread
The aluminum driveshafts were a separate option & not specific to the rear end.
As for the width....I'm not real sure. The only thing I know is, the 4th gen rear are 1.75" wider per side, but I also hear the LS1 car rears are only .75" wider than the LT1 rears, but nobody has confirmed that.
TGO thread
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: question about 3rd gen rear ends???
I think axle flange to axle flange is around 63". Maybe 65". If you use the search feature, it will probably show up. It's been asked before.
The 88 GTA with the 5.7L will probably have a 3.27 9 bolt diff with posi. I doubt it will have an aluminum driveshaft from the factory.
Why do you need to know the width? The only other diff that will be a direct fit is from another third gen or a fourth gen but the fourth gen diff is wider by 2" on each side. You can't put some other junkyard diff under a third gen without doing a lot of suspension modifications.
The 88 GTA with the 5.7L will probably have a 3.27 9 bolt diff with posi. I doubt it will have an aluminum driveshaft from the factory.
Why do you need to know the width? The only other diff that will be a direct fit is from another third gen or a fourth gen but the fourth gen diff is wider by 2" on each side. You can't put some other junkyard diff under a third gen without doing a lot of suspension modifications.
Last edited by AlkyIROC; Sep 22, 2008 at 07:59 PM.
Thread Starter
Senior Member
iTrader: (3)
Joined: Aug 2006
Posts: 559
Likes: 3
From: washington
Car: 88 Trans am GTA
Engine: 2002 Ls1
Transmission: t-56
Axle/Gears: Ford 9" 4.11 gears w/ locker
Re: question about 3rd gen rear ends???
cause im selling it and the buyer has a custom street rod and and wanted to know, i searched and couldnt find it, maybe im typing the wrong thing in....
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