Gears For An Automatic
- Thread starter Ts1lightning63
- Start date
Do you do any interstate/highway driving?
4:10’s on the interstate/highway will put you fairly high up in the rpm’s for however long you ride the highway.
If you do a lot of interstate driving-I’d recomend the 3.73’s- you can always play with tire sizes to make small changes with what ever gearing you choose
4:10’s on the interstate/highway will put you fairly high up in the rpm’s for however long you ride the highway.
If you do a lot of interstate driving-I’d recomend the 3.73’s- you can always play with tire sizes to make small changes with what ever gearing you choose
squeak93
15 Year Member
3.73 gears here and they are perfect with the 4r70w.
4.10 would be a bit much for normal usage with the auto. But then again I used to run 4.30 gears in a 5 speed car. Don’t fear the gear but install what is needed for your combo.
4.10 would be a bit much for normal usage with the auto. But then again I used to run 4.30 gears in a 5 speed car. Don’t fear the gear but install what is needed for your combo.
The car is not a daily driver. Used only on the weekend for a ride around town.
The car currently has CAI, Bama chip, X-pipe and high flow Magnaflow mufflers installed. I am not sure but I might install a base Supercharger on it in the future.
Throw a trans cooler on it with the gears, especially the deeper ones.
Here is a good article on the JMod for the 4R70W:https://www.americanmuscle.com/what-is-a-j-mod.html
Here is a good article on the JMod for the 4R70W:https://www.americanmuscle.com/what-is-a-j-mod.html
squeak93
15 Year Member
If you're going to put a blower on it, or any power adder, go with 3.73. I trap 119 and am about out of gear on 26x10.50's. Of course you can solve that by running 28 inch tall tires etc if needed.
Our n2o car ran 4.10's. We were essentially over geared. We picked up 4 mpg going from a 26 to a 27 inch tall slick. Ended up dropping 1mph with 28s but it hooked better so we were quicker.
Our n2o car ran 4.10's. We were essentially over geared. We picked up 4 mpg going from a 26 to a 27 inch tall slick. Ended up dropping 1mph with 28s but it hooked better so we were quicker.
Similar threads
