Ford F-250 7.3 Gas Engine Axle Ratios
Is there much difference in towing milage, and around town/highway mileage with the new F-250 7.3 gas engine with rear gear options? Considering 3.55 or 4.30 axles ratios. Any input is helpful.
Forum Discussion
dodge guy wrote:kellem wrote:dodge guy wrote:kellem wrote:
Bought my 7.3 gas strictly for towing our 30 ft trailer and the 3.55 gears doesn't acknowledge a trailer is in tow.
4.30, 3.73, 3.55....10spd makes them feel the same.
Tremor sitting on 35" tires, maybe 4.30 is justified. Imo
But how do you know different gears won't make a difference towing your trailer?
It would be marginal towing at only half the trucks capacity.
Exactly! But if towing more weight that’s when the deeper gears make a difference!
With 8 / 10 spd transmissions, the only places it makes a difference is starting out in 1st, and ability to use top gear.
Other than that, in gears 2 - 9, with such close ratio, there's enough overlap your towing experience is identical.
i.e. the 4.30 truck in 6th would be within a few hundred rpm of a 3.55 truck in 5th, and a given road speed.
