A6 - 2.56 gear change
Thread Starter
Intermediate
Joined: Jul 2018
Posts: 40
Likes: 4
A6 - 2.56 gear change
I have a 2014 C7 Stingray with the stock A6 6L80 trans and the stock converter. Car is procharged making around 830 rwhp. Running a 27.8 diameter tire. The car is used for street driving/roll racing and roll racing events at the track. Car is never raced from a dig. I’m looking to improve my roll times at the track. I was wondering if changing the 2.56 rear gear to a 3.42 gear would help with that? Would a looser stall help? Not sure where to go next on the set up I already have. Any experience with this or advice would be greatly appreciated.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,108
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I have a 2014 C7 Stingray with the stock A6 6L80 trans and the stock converter. Car is procharged making around 830 rwhp. Running a 27.8 diameter tire. The car is used for street driving/roll racing and roll racing events at the track. Car is never raced from a dig. I’m looking to improve my roll times at the track. I was wondering if changing the 2.56 rear gear to a 3.42 gear would help with that? Would a looser stall help? Not sure where to go next on the set up I already have. Any experience with this or advice would be greatly appreciated.
Team Owner
Joined: Jan 2007
Posts: 29,063
Likes: 1,839
From: cookeville tennessee
ttt
^^^ I agree 100% But again OP I also have a 2014 that I have about every thing you can do to one. Blower & all forged motor with meth & all the LT4 pumps. I did the A6 kit from circle D with a 3200 stall from them also. Trans kit was 3500.00 by itself & also did the wavetrac from RPM with the 3:42 gears, & loves the way the car pulls now over the out rear set up.
Melting Slicks
Joined: Sep 2021
Posts: 2,555
Likes: 1,213
Looking at top speed in each gear will help you decide.
Also consider traction. If your tires are at the traction limit now then changing gear ratio probably won't make you any faster during acceleration.
Le Mans Master
Joined: Mar 2010
Posts: 7,052
Likes: 945
From: DFW TX
Going to a 3.42 is going to help you from the 60 roll be in a shorter gear. You probably could start from 2nd in an auto if you have a good tire on it. It will however need to shift from 4th to 5th on the big end most likely. In my 3.42 manual car at TX2K I always started in 3rd and finished at the verrrrrryyyyy top of 4th at 7000 and I ran 160-165 consistently.
When I switched to standing half mile I went the other way. From 3.42 to to 2.73 (z51 car) so I didn't have to shift out of 4th in a standing 1/2 mile. It would do 203 full tilt in 4th lol.... I actually bought that rear end from @robertmiller
When I switched to standing half mile I went the other way. From 3.42 to to 2.73 (z51 car) so I didn't have to shift out of 4th in a standing 1/2 mile. It would do 203 full tilt in 4th lol.... I actually bought that rear end from @robertmiller
