A6 with 3:42 gears?
Race Director
Joined: Jan 2006
Posts: 18,396
Likes: 169
Only experience I have was with my 1970 highly modded 454cid with the T400 tranny. I went from 3:08's to a 4:11. With slicks, the car ran over 1 sec faster in the 1/4 mile. Had a hugh air to air cooler on it, and it never missed a beat under some pretty hard useage. I'd think this would be a great, inexpensive mod as long as you included a big cooler with the install.
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Only experience I have was with my 1970 highly modded 454cid with the T400 tranny. I went from 3:08's to a 4:11. With slicks, the car ran over 1 sec faster in the 1/4 mile. Had a hugh air to air cooler on it, and it never missed a beat under some pretty hard useage. I'd think this would be a great, inexpensive mod as long as you included a big cooler with the install.
Or both?
Not a bad idea for the steeper gears will generate more heat and I think there is even a built provision for a diff cooler on our cars.
Racer
Joined: Sep 2006
Posts: 264
Likes: 0
From: Bradenton Florida
I would talk with Chuck Cow and see if he can get you in touch with some of his customers. He has a 3.15 and a 3.42 package along with a Tranny tune. Check out his website or his posts on this Forum.
Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Good ADVICE!
Good advice.... Most any post on this forum abut 3.15's or 3.42's should include posts from my existing customers.
By all means, send them a PM and ask them what they think of it.....
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,404
From: Bethesda MD
2. Any times at the drag strip?
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Street driving/seat-of-the-pants testimonials are helpful and all but I too certainly wouldn't mind seeing some more empirical type 1/4 mile track data as well. 
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Former Vendor
Joined: Nov 2005
Posts: 11,792
Likes: 255
From: Ossining New York
St. Jude Donor '07-'08-'09-'10-'12-'13-'14
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,404
From: Bethesda MD
2. I'm not a gear hater. I know the car will feel much faster than stock and it will be faster than stock. In the F-Body A4 world, the gains from gears are well documented for just about any combination. I would just like to see if how much time is cut from ET going from say 2.73s to 3.15s or 3.42s with the A6. There is no smack talk in asking the question.
3. Do not point me to posts dealing with 3.73s, 3.90s, or 4.10s since those threads deal with manual transmission cars or 05 cars with an A4.
4. As far as your comment about search, be a hero and give the names of two members who have before and after times for gear swaps for the 3.42s. I look for their posts and find the data. Hopefully, the before times include Chuck's tune since that should be worth .1 - .2 by itself.
Instructor
Joined: Mar 2008
Posts: 127
Likes: 0
From: Austin TX
1. it was indeed nessasary
2. your question had no malice, this topic just gets heated everytime it comes up (nothing to do with you!)
2b. gears work in any car, the f-body world is no different......math is math.
3. i listed 3.15's and 3.42's, never 3.73's.....but you could put 3.90's or 4.10's in an a6 if you felt frisky.
4. no hero here, just stating the obvious.
5.
2. your question had no malice, this topic just gets heated everytime it comes up (nothing to do with you!)
2b. gears work in any car, the f-body world is no different......math is math.
3. i listed 3.15's and 3.42's, never 3.73's.....but you could put 3.90's or 4.10's in an a6 if you felt frisky.
4. no hero here, just stating the obvious.
5.
Last edited by XvettemanX; May 1, 2008 at 01:49 AM.
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA
I'll be able to shed some light on the subject very soon - I'm currently running 3.15 gears in my A6 and will be upgrading to 3.42's before month's end.
I've got over 200 passes at the track with my current setup (I keep all my timeslips) so I'll be able to provide some hard data on how much of a difference they make.
My current best is 11.479 @ 123.5 MPH and I'm hoping that I'll be improving on that:
I've got over 200 passes at the track with my current setup (I keep all my timeslips) so I'll be able to provide some hard data on how much of a difference they make.
My current best is 11.479 @ 123.5 MPH and I'm hoping that I'll be improving on that:
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,404
From: Bethesda MD
I'll be able to shed some light on the subject very soon - I'm currently running 3.15 gears in my A6 and will be upgrading to 3.42's before month's end.
I've got over 200 passes at the track with my current setup (I keep all my timeslips) so I'll be able to provide some hard data on how much of a difference they make.
I've got over 200 passes at the track with my current setup (I keep all my timeslips) so I'll be able to provide some hard data on how much of a difference they make.
Nice runs. Did you get a chance to measure your ET drop going to 3.15s?
Melting Slicks
Joined: Jul 2007
Posts: 3,097
Likes: 5
From: Brentwood World's first A6 in the 9's (including N/A, blower, turbo and nitrous cars) 9.950@139.267 CA