Switching to 3.55 or 3.73

[21Powerboost XLT302A]

For the price of changing gears in the rear to 3:73 you prob can find a 9.75 3:73 direct bolt on and 8.8 front in the bone yard for cheaper and do it your self.

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[KBKEITH]

At one time anyway the 8.8 was available with the 3.73 ELA. That’s what my 2016 F-150 had.

 

[Calson]

There is at most a 6% greater circumferance with the 34" tires and so no need for changing out the gears. If you were towing a 10,000 lb trailer in the mountains, then having 3.73 gears would be important.

It is also less of an issue with the Ford 10-speed transmissions that have 3 overdrive gears. The key is having the engine operating within its narrow power band and that was much more difficult with 4-speed transmissions or even 6-speed with a single overdrive gear.

What puts a lot of stress on the drivetrain is lifting a truck and changing the angles for the propeller shafts and putting more stress on the spindles and other suspension components. Lifting a truck is a great way to make it less reliable and perform worse off the pavement.

 

[Badhabit]

What puts a lot of stress on the drivetrain is lifting a truck and changing the angles for the propeller shafts and putting more stress on the spindles and other suspension components. Lifting a truck is a great way to make it less reliable and perform worse off the pavement.

 

[TacoJon]

OP what did you end up doing?

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