Why higher gearing?

[lex101]

So for FI cars, e would want to try a 4.10 gear if possible? I'm interested in the thread but still learning.

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[jasonstang]

So for FI cars, e would want to try a 4.10 gear if possible? I'm interested in the thread but still learning.

No you don't. You wanna be in the 3.31 or even 3.15 range if automatic to get the boost going. Changing gear letting of throttle drops boost.

 

[francisco511]

It's not that difficult if you have the proper tools and a lift. We had ours installed by Power By the Hour performance in just a few hours. You'll need the gears, gear install kit and the Whipple flare tool in order to properly calibrate the body control module.

Give us a call if there's anything we can help you with.

Thanks,
Jared

Can you use the Whipple calibrator (for the purpose of changing the gearing) on multiple cars?

 

[lex101]

No you don't. You wanna be in the 3.31 or even 3.15 range if automatic to get the boost going. Changing gear letting of throttle drops boost.

Ok, sorry I should of clarified, I'm a manual. Still go 315? 331?

 

[jasonstang]

Ok, sorry I should of clarified, I'm a manual. Still go 315? 331?

3.31 would be a good choice for boosting. I dont think you can get 3.15 because its an auto only but auto's have 4.17 first gear where manual is 3.66 so 3.31 x 3.66 = 12.11 vs 3.15 x 4.17 = 13.13.

 

[beefcake]

drive the car before spending the $$ on a gear, is my opinion, you may like it just as it is

 

[LethalPerformance]

Can you use the Whipple calibrator (for the purpose of changing the gearing) on multiple cars?

When you purchase the Flare tool it's locked to your VIN number. If you wanted to use it on another car you can request a new file for a different VIN from Whipple and there will be a $100 fee for that file.

Let me know if you have any other questions.

Thanks, Jared

 

[Jeffy_2010]

Are you running a manual or auto? What power level are you aiming for and will you be drag racing the car or is it just for the street?

Thanks, Jared

I'm a manual pp car, aiming for 750-800rwhp and will be a combo of drag strip and city. This car isn't my daily

 

[Jeffy_2010]

if it was me, i would go for a circle d 3c before changing out the gear.

the car will still drive great on the street, but the converter will not only be stronger and hold the power better, it will allow the 60's to drop quite a bit.

I'm a m6 so no converter

 

[LethalPerformance]

I'm a manual pp car, aiming for 750-800rwhp and will be a combo of drag strip and city. This car isn't my daily

The 3.73's are going to be real tough to get a handle on at that power range. It's just a lot of power for that short of a gear. You'll have to bang gears like crazy as well as hit 5th at the top of the track with them.

We went with the 3.31's and the gearing is much better now for the track and the car drives great on the street.

Let me know if you have any other questions.

Thanks, Jared

 

[Jeffy_2010]

The 3.73's are going to be real tough to get a handle on at that power range. It's just a lot of power for that short of a gear. You'll have to bang gears like crazy as well as hit 5th at the top of the track with them.

We went with the 3.31's and the gearing is much better now for the track and the car drives great on the street.

Let me know if you have any other questions.

Thanks, Jared

Can you send me the part numbers I will need to swap over to the 3.31 torsen?

 

[LethalPerformance]

Can you send me the part numbers I will need to swap over to the 3.31 torsen?

Gears
http://www.lethalperformance.com/shop-now/vehicle-selector/ford-mustang-v8-gt/2015-ford-mustang-gt/driveline/gears/ford-2015-2016-mustang-gt-oem-3-31-gear-set.html

Install Kit
http://www.lethalperformance.com/shop-now/vehicle-selector/ford-mustang-v8-gt/2015-ford-mustang-gt/driveline/gear-install-kits/ford-racing-2015-mustang-irs-ring-and-pinion-install-kit.html

Flare tool to flash the body control module
http://www.lethalperformance.com/shop-now/vehicle-selector/ford-mustang-v8-gt/2015-ford-mustang-gt/computer-1/whipple/whipple-2015-2016-mustang-f150-5-0l-axle-wheel-flare-device.html

Those are the essentials. Of course you'll need some gear oil as well but the parts above will be pretty much everything you need.

Let me know if you have any other questions.

Thanks, Jared

 

[2015 DIB GT]

So nothing actually has to be changed in the tune, just the body control module? Is this something the dealer should be able to change so I don't need to buy the flash module for just one time use?

 

[jasonstang]

So nothing actually has to be changed in the tune, just the body control module? Is this something the dealer should be able to change so I don't need to buy the flash module for just one time use?

It's just calibrating the speedometer.

 

[LethalPerformance]

So nothing actually has to be changed in the tune, just the body control module? Is this something the dealer should be able to change so I don't need to buy the flash module for just one time use?

You'll need your tune updated for the new gear ratio as well. As far as the dealer goes I don't believe they have the ability to flash your body control module to a different ratio however you're more then welcome to ask them. From personal experience it was very easy to use the device though.

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