changing rearend withan A4
Thread Starter
Instructor
Joined: Sep 2014
Posts: 119
Likes: 0
From: Davison Michigan
changing rearend withan A4
Can I replace the whole rearend say out of a Z06 with a 3.42 into a auto car. I have the 2.73 gears and is a pig out of the hole. I was quoted $1600 to change it to 3.90 gears. They said with my case that was my only option. It's cheaper just to switch the whole rearend.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
IF and When you change out your rearend gears, you will also have to have a tuner tune your PCM so you maintain the correct A4 Shift points.
While you have the differential off the vehicle, at a MINIMUM, change the output seals.
Here are a couple post for your reading enjoyment..
C5 Differential Seal replacement: http://forums.corvetteforum.com/c5-g...on-photos.html
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- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
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- C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
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While you have the differential off the vehicle, at a MINIMUM, change the output seals.
Here are a couple post for your reading enjoyment..
C5 Differential Seal replacement: http://forums.corvetteforum.com/c5-g...on-photos.html
-
- C5, ragtopws6 , Upgrading your C5 rear with C6 Z06 guts, : http://forums.corvetteforum.com/c5-g...-z06-guts.html
-
- C5, Its_Go_Time, Output Shaft Install - Left and Right: http://forums.corvetteforum.com/c5-t...post1573407966
-
Team Owner
Joined: Sep 2001
Posts: 23,283
Likes: 906
From: Lake Elsinore, CA
Also, in the A4 there is an adapter plate pressed into the front side of the differential that you need to transfer to the new differential housing. You can see the plate with its seal in the pic below.
Last edited by Patches; Sep 27, 2014 at 10:31 AM.
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