Ford super duty 3.31 rear end. Will it be a big mistake. ?
Pulling a 37 foot Cedar creek with a f350. Diesel. Would the 3.31 rear end work or should I get the 3.55?
Forum Discussion
^^^^ Another way to compare the engine rpm at 60 mph is like this:
3.55 gears with 34” tires 1330 rpm in 10 th gear at 60 mph
3.31 gears with 34” tires 1348 rpm in 9th gear at 60 mph
With 3.31 gears you get an extra gear (10th) to use when towing on flat ground or while running empty.
3.55 gears with 34” tires 1330 rpm in 10 th gear at 60 mph
3.31 gears with 34” tires 1348 rpm in 9th gear at 60 mph
With 3.31 gears you get an extra gear (10th) to use when towing on flat ground or while running empty.
