2.73 question
Thread Starter
Melting Slicks
Joined: Sep 2005
Posts: 2,739
Likes: 0
From: New Port Richey Florida
2.73 question
I have a 2002 A4 Coupe and am interested in changing the stock 2.73 gears to 3.42
I've done a few searches but can't seem to find everything I would need to do to replace them
I plan on having a shop perform the actual install.
Will the new 3.42 gears fit in the stock 2.73 pumpkin ?
Is there anything else that will need to be replaced other than the gears ? I've read many posts saying to replace the TC and also many saying it's not needed. This car will be strictly for street use, I just want better response time for those moments I want to get on it a little.
Any help or links that you can provide would be greatly appreciated.
I understand the car will need to be tuned after the replacement for the new shift points.
Does anyone know of a good tuner in the Tampa area ?
I'm also planning on adding headers, X-pipe, rear exhaust and a Vararam so I thought I would do it all at the same time and then get a good tune.
Thanks,
Mike
I've done a few searches but can't seem to find everything I would need to do to replace them
I plan on having a shop perform the actual install.
Will the new 3.42 gears fit in the stock 2.73 pumpkin ?
Is there anything else that will need to be replaced other than the gears ? I've read many posts saying to replace the TC and also many saying it's not needed. This car will be strictly for street use, I just want better response time for those moments I want to get on it a little.
Any help or links that you can provide would be greatly appreciated.
I understand the car will need to be tuned after the replacement for the new shift points.
Does anyone know of a good tuner in the Tampa area ?
I'm also planning on adding headers, X-pipe, rear exhaust and a Vararam so I thought I would do it all at the same time and then get a good tune.
Thanks,
Mike
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Instructor
Joined: Jul 2004
Posts: 168
Likes: 0
From: Metairie La.
You will need to purchase the entire differential (try GM Parts Direct or Fred Bean for pricing of Z06 part, its cheaper than regular C5). Shop charged me only $100.00 more for labor to install Yank converter, so if you are even remotely thinking about it, do it now.
New up shift points should be: 1st to 2nd - 41 MPH
2nd to 3rd - 80 MPH
3rd to 4th - 130 MPH
New down shift points should be: 2nd to 1st - 36 MPH
3rd to 2nd - 79 MPH
4th to 3rd - 118 MPH
New up shift points should be: 1st to 2nd - 41 MPH
2nd to 3rd - 80 MPH
3rd to 4th - 130 MPH
New down shift points should be: 2nd to 1st - 36 MPH
3rd to 2nd - 79 MPH
4th to 3rd - 118 MPH
Burning Brakes
Joined: Oct 2004
Posts: 769
Likes: 0
From: simpson town Mo
Originally Posted by mrosa65
I have a 2002 A4 Coupe and am interested in changing the stock 2.73 gears to 3.42
I've done a few searches but can't seem to find everything I would need to do to replace them
I plan on having a shop perform the actual install.
Will the new 3.42 gears fit in the stock 2.73 pumpkin ?
Is there anything else that will need to be replaced other than the gears ? I've read many posts saying to replace the TC and also many saying it's not needed. This car will be strictly for street use, I just want better response time for those moments I want to get on it a little.
Any help or links that you can provide would be greatly appreciated.
I understand the car will need to be tuned after the replacement for the new shift points.
Does anyone know of a good tuner in the Tampa area ?
I'm also planning on adding headers, X-pipe, rear exhaust and a Vararam so I thought I would do it all at the same time and then get a good tune.
Thanks,
Mike
I've done a few searches but can't seem to find everything I would need to do to replace them
I plan on having a shop perform the actual install.
Will the new 3.42 gears fit in the stock 2.73 pumpkin ?
Is there anything else that will need to be replaced other than the gears ? I've read many posts saying to replace the TC and also many saying it's not needed. This car will be strictly for street use, I just want better response time for those moments I want to get on it a little.
Any help or links that you can provide would be greatly appreciated.
I understand the car will need to be tuned after the replacement for the new shift points.
Does anyone know of a good tuner in the Tampa area ?
I'm also planning on adding headers, X-pipe, rear exhaust and a Vararam so I thought I would do it all at the same time and then get a good tune.
Thanks,
Mike
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Former Vendor
Joined: Feb 2004
Posts: 9,615
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From: Burlington NC
I'm not a diff builder at all. But I do know that you need a special spacer because of the spacing. The best thing to do is buy a ZO6 case built-done new for under 1000 bucks. This way the gears will be not noisey, and you will have the stronger case.
Randy
Randy
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
Originally Posted by Randy@DRM
I'm not a diff builder at all. But I do know that you need a special spacer because of the spacing. The best thing to do is buy a ZO6 case built-done new for under 1000 bucks. This way the gears will be not noisey, and you will have the stronger case.
Randy
Randy
one company can put other gears in a 2 series case... and that's DTE. But like mentioned earlier, you can buy a brand new complete carrier with the 3.42 gears for around $1000 (near the costs for swapping gears in an existing 2 series case).
Racer
Joined: Oct 2005
Posts: 351
Likes: 0
From: Haw River North Carolina
Unless you have a shop in your local area KNOWN to do good work on Vette differential, Just use yours as a core and buy one already set up by folks that specialize in Vettes for a living and know them better.
Just my $.02
