315 diff?
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 179
From: S.W. Ohio. . . . . . NRA Life Member
Instructor
Joined: Sep 2003
Posts: 185
Likes: 0
From: gaithersburg MD
Don't waste your time and money with a 3.15 I would suggest that you at least go to a 3.42 rear. And while you're at it install a Torque Converter to boot. If you don't want anything too radical go with a 2800 or 3000 stall converter. You will be amazed at how this setup wakes up your car. I had it done and I can't believe what dog performance you get outta that lame 2.73 setup. Chevrolet should flat out stop installing that gear. Its a crime to put that in a Vette.
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Originally Posted by JOHN MOORE
have a '00 a4 coupe w/stock 2.73...how much does it cost to change to 3.15, and is it worth it?...how do you calibrate the speedo?
Melting Slicks
Joined: Feb 2004
Posts: 2,903
Likes: 0
From: I finished a Marathon, did you? Michigan
CI 6-7, 9-10 Veteran
Originally Posted by HotLaperC5
Don't waste your time and money with a 3.15 I would suggest that you at least go to a 3.42 rear. And while you're at it install a Torque Converter to boot. If you don't want anything too radical go with a 2800 or 3000 stall converter. You will be amazed at how this setup wakes up your car. I had it done and I can't believe what dog performance you get outta that lame 2.73 setup. Chevrolet should flat out stop installing that gear. Its a crime to put that in a Vette.
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Melting Slicks
Joined: Jun 2001
Posts: 2,743
Likes: 3
From: Davie Florida
Originally Posted by HotLaperC5
Don't waste your time and money with a 3.15 I would suggest that you at least go to a 3.42 rear. And while you're at it install a Torque Converter to boot. If you don't want anything too radical go with a 2800 or 3000 stall converter. You will be amazed at how this setup wakes up your car. I had it done and I can't believe what dog performance you get outta that lame 2.73 setup. Chevrolet should flat out stop installing that gear. Its a crime to put that in a Vette.
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Look to spend about 400-600 on a 3.42 (used). Lots of guys are ditching practically brand new rears to go for more radical 3.73 and even 4.10 setups, so they are out there. The Torque converter will run you anywhere from 700-1200 depending on which type/manufacturer you go with and the install... plan on about $1000.00- 1200.00 to complete.
This is by far the best mod for any A4. go for it and enjoy!!
Could not agree more.
Safety Car
Joined: Oct 2004
Posts: 4,816
Likes: 132
From: Plano TX
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Mercury Mike is totally correct.(May be an exception with Z06 owners with 405 hp). This applies to a 350hp LS1. The 2.73 A4 tops out at around 165 at best. 3.15 rear ends top out at around 170, and 3.42 6 speed 175. We are talking about bone stock. The six speed actually tops out at 175 in 5th gear. Sixth is way to big and 160 mph is all you can get out of 6th gear bone stock. All 6th gear is good for is gas mileage unless you have some serious mods.. I have the 3.15 and would like a 3.42 or better, no need for that kind of top end or any place to use it. I'd rather have the acceleration.... If you are set on 3.15 let me know because I am going to a 3.42 or better...
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Last edited by David426 : Today at 09:35 PM.
Mercury Mike is totally correct.(May be an exception with Z06 owners with 405 hp). This applies to a 350hp LS1. The 2.73 A4 tops out at around 165 at best. 3.15 rear ends top out at around 170, and 3.42 6 speed 175. We are talking about bone stock. The six speed actually tops out at 175 in 5th gear. Sixth is way to big and 160 mph is all you can get out of 6th gear bone stock. All 6th gear is good for is gas mileage unless you have some serious mods.. I have the 3.15 and would like a 3.42 or better, no need for that kind of top end or any place to use it. I'd rather have the acceleration.... If you are set on 3.15 let me know because I am going to a 3.42 or better...
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Last edited by David426 : Today at 09:35 PM.
Last edited by David426; Dec 15, 2004 at 08:44 PM.
Thread Starter
Instructor
Joined: Oct 2004
Posts: 131
Likes: 0
right now, i am leaning towards the 3.42 or maybe even the 3.73 (i put a 3.73 in my '01 cobra)...(don't hate me for the cobra...i like all kinds of cars)...i want to get more input regarding the change in gas mileage (i visit my mother in a rest home on the coast about once a month-230 mile round trip), and i have to resolve the t/c issue...thanks-i may get in touch later....
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Team Owner
Joined: Oct 2001
Posts: 46,759
Likes: 5
From: Boynton Beach Florida
St. Jude Donor '07-'12, '20
My 2001 A4 has the 3.73 rear, and the stock converter. Still getting 27 mpg on the highway and 20-24 on the side streets depending on how heavy my foot is. I went from 2.73 to the 3.42 then the 3.73 should have just done the 3.73 in the first place. Great gear for the A4, I love it.
Bob
Bob