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:
If that’s the case then why do the manuf’s offer different ratios. I know for a fact that a few hundred RPM makes a difference when towing. 300 lower in one gear can really help.
For starting out on a hill, or "startability" in towing industry. Also the reason why an equal horsepower diesel has significantly higher towing capacity, they have more than double the startability of a gas.
"Gradability" is what I was talking about, the ability to maintain speed climbing a hill. That's where gear ratios does not matter with 8 / 10 spds.
With 4 speed auto, it was a huge deal. If you couldn't make a grade in 2nd, you'd be crawling along @ 30 mph in 1st...
