rearend swap
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From: West Haven, CT
Car: 1983 Z28
Engine: 355
rearend swap
i searched and couldnt find the answer. i was just making sure before i traded a set of wheels and tires (paid 50 for them myself) if these two rearends would match. i have an 83 z28 with the 2.83 b/w rearend and im getting a posi rear out of a 84-86 not too sure. also the donor car is an auto and i have the b/w t-5 would the drive shaft fit too? i can have anything off of the car that i want for the wheels and tires should i grab any spare suspension parts while im at it?
thanks for the help
thanks for the help
Joined: Aug 1999
Posts: 19,282
Likes: 103
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: rearend swap
Below.
JamesC
JamesC
Last edited by JamesC; Sep 3, 2009 at 06:00 PM. Reason: Dumb Butt
Joined: Aug 1999
Posts: 19,282
Likes: 103
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: rearend swap
JamesC
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From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: rearend swap
ALL 82-02 rear ends (yes, 3rd & 4th gen) are direct swaps.
Only differences are the proportioning valve under the master cylinder, which SOME people swap too, some don't. If you have access to one for free? Sure. Swap it out too. And the lines on the anti-lock brakes from 4th gens. Best just to move your 3rd gen hard lines on the axle, over to the 4th gen ones, on the 4 circuit anti-lock systems.
4th gen axles are wider, but the 16" wheels still fit under the fenders. The early 15" wheels would set out a little farther, due to the less backspacing on them.
Only differences are the proportioning valve under the master cylinder, which SOME people swap too, some don't. If you have access to one for free? Sure. Swap it out too. And the lines on the anti-lock brakes from 4th gens. Best just to move your 3rd gen hard lines on the axle, over to the 4th gen ones, on the 4 circuit anti-lock systems.
4th gen axles are wider, but the 16" wheels still fit under the fenders. The early 15" wheels would set out a little farther, due to the less backspacing on them.
Joined: Aug 1999
Posts: 19,282
Likes: 103
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: rearend swap
JamesC
Last edited by JamesC; Sep 4, 2009 at 06:46 AM.
Banned
iTrader: (12)
Joined: Jul 1999
Posts: 12,212
Likes: 13
From: Bertram (outside Austin), TX
Car: 87 GTA
Engine: L98
Transmission: 700R4
Axle/Gears: Dana M78 3.27 posi
Re: rearend swap
FACTS are, as I already stated. SOME people swap them out, SOME people do not.
I even said that if you can already get a free one? Swap it out. But James ignored that part & just quoted what he wanted to. He's like that. Really likes to push my buttons. I think it is his goal in life!
Joined: Aug 1999
Posts: 19,282
Likes: 103
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: rearend swap
As I mention, for the best possible brake performance swap the valve to the appropriate one. Pretty simple.
JamesC
JamesC
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Thread Starter
Junior Member
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Joined: Nov 2008
Posts: 13
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From: West Haven, CT
Car: 1983 Z28
Engine: 355
Re: rearend swap
well the rearend i have has disk brakes and the one im getting has drums. i only plan on swapping the rears if i have to and something breaks. would it be a better idea just to swap out the guts of the rears in order to keep my rear disks?
Joined: Aug 1999
Posts: 19,282
Likes: 103
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: rearend swap
JamesC
Thread Starter
Junior Member
iTrader: (1)
Joined: Nov 2008
Posts: 13
Likes: 0
From: West Haven, CT
Car: 1983 Z28
Engine: 355
Re: rearend swap
the novice part makes sense. i didnt ask if "i" should i asked if it should be done. but i have swapped gears in a dana 44 axle on my friends jeep and i have a few certified techs in my family that are easy to get a hold of. so is swapping them something i should look into?
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