Differential Upgrade
Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
Differential Upgrade
I currently have the 3.15 differential in my 2003 with an automatic trans. To gain better performacne I am wanting to upgrade. How much of an increase can I go and what are the advanteges and disadvantages. I have seen them as high as 4.10.
Thanks
Randy
Thanks
Randy
Last edited by vettejockey; Feb 28, 2006 at 06:38 PM.
Burning Brakes
Joined: Feb 2006
Posts: 917
Likes: 0
From: 10.54 @ 129 346 N/A A4 Record 9.78 @ 139+ on 150 shot
i went from 2:73's to 3:73's and a 3600 stall. best mod ever wish i did before i did anything else. picked up over a second in 1/4 times totaly steetable i dont use as a daily driver so can say about long high way trips but i love it. i think anything higher 390/410 is to much for an auto unless its a track car. my friends daily driver went with 3:42 and a 3200 stall and he drives 70 highway miles a day with no issues
Burning Brakes
Joined: Mar 2003
Posts: 874
Likes: 0
From: Bonita CA
Originally Posted by 2000whitec5
i went from 2:73's to 3:73's and a 3600 stall. best mod ever wish i did before i did anything else. picked up over a second in 1/4 times totaly steetable i dont use as a daily driver so can say about long high way trips but i love it. i think anything higher 390/410 is to much for an auto unless its a track car. my friends daily driver went with 3:42 and a 3200 stall and he drives 70 highway miles a day with no issues
3:42 w/ 3200 stall here, but still wish someone would intall my Mn6 equipment for me!
Race Director
Joined: Aug 1999
Posts: 15,466
Likes: 0
From: GARDENA Ca, State Of Konfusion
St. Jude Donor '05
Originally Posted by 2000whitec5
i went from 2:73's to 3:73's and a 3600 stall. best mod ever wish i did before i did anything else. picked up over a second in 1/4 times totaly steetable i dont use as a daily driver so can say about long high way trips but i love it. i think anything higher 390/410 is to much for an auto unless its a track car. my friends daily driver went with 3:42 and a 3200 stall and he drives 70 highway miles a day with no issues
Le Mans Master
Joined: Sep 1999
Posts: 5,464
Likes: 2
From: Private
Originally Posted by rjung
Thanks for the info I will look into the 3.42/3.73 mod. I do not use this car as my daily driver nor is it a track car. What I am wanting to try is autocross.
Randy
Randy
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Thread Starter
Racer
Joined: Feb 2006
Posts: 349
Likes: 0
I want to find a bolt on differential from a company that will give me core credit for my current unit. Does anyone have any good sources for these units and are the units that have been reconfigured as good as new ones. One of the companies I have researched is DynoTech Engineering. If anyone has someone else they recomend I would appreciate the referal.
Also is the 3.90 ratio to high for a street care?
Randy
Also is the 3.90 ratio to high for a street care?
Randy
Drifting
Joined: May 2004
Posts: 1,904
Likes: 2
From: London(UK)/Troyes(France)
I wanted to keep a high top speed, so I stayed with the 3.15 axle but added a 2800 TC. It woke the car up, I'm very happy with it.
And I got 186 mph easy, on a closed road of course
And I got 186 mph easy, on a closed road of course