Forum Discussion

_DJ_1's avatar
_DJ_1
Explorer II
Sep 15, 2016

Ford 6.7 owners

What gear ratio do you have?

I just got a '16 end of the year sale. Got everything I wanted except the gear ratio. Slim pickens this time of year. I ended up with 330's. I wanted 410 or at least a minimum of 373. Salesman said only dually get 410 and the 330 has the same tow rating as 355, 15000#. My GVCW with quad and TT is 18000.

I'm really afraid these gears are too tall. Guess I'll find out tomorrow towing over the central mountains of Idaho.

I re-geared my old Super Duty gasser from 373 to 430. Wow, what an improvement!! I all ready talked to my Dealer who said they can put in any gear I want including 410.
  • 3:55 and 20" wheels. Tows the 5er fine over Colorado mountain passes. And cruises easily on the flats in OD, only dropping down a gear on hills.
  • If your combined weight is only 18k, you won't have a problem with the gear ratio, and on the plus side, when running empty your mileage will be great.

    I have 4:30 gears, but I tow quite a bit more weight than you are planning on, and it was the only ratio to choose from in the F450.
  • You have twice the torque of your previous truck. Even with the 3.31s 18K combined is a pretty light load the way your transmission is geared. Even if your old truck had 5.38s it wouldn't perform anything like your truck.
  • I have 3.55 gears but with 20" tires. That Powerstroke will pull like a dream compared to your gasser.

    Enjoy...