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:Hannibal wrote:
We just returned from a trip with our F-250 FX4 7.3L 10spd 3.55 towing our TT in sig. More than plenty of power. Backing into the side yard through grass and soft ground with plenty of grunt just above idle. In 4 Lo, I have to ride the brake. The only thing 4.30 gears would do is reduce fuel efficiency and make it sound like I needed another gear at the top end.
what gear is the truck running in at 65-70 both towing and non-towing?
Non towing at 65-70 will always be in 10th gear unless of course the engine needs to work to climb grade.
My 7.3 3.55 is at 1600 RPMS at 70 mph.
In tow mode, 9-10 are locked out and every gear is used on take off regardless of demand, no gear skipping like running empty.
