I just recently bought an '04 F-250 with the 5.4L gas. I'm very pleased with this purchase but I'm wondering about some of the specs. The primary thing I'd like to know is the gear ratio at the axle. Is it a 4.10? Maybe the 3.73? I don't have any idea but if I ever buy another gas engine truck in the future, this would surely help in my decision. We all tow so much, gear ratio is something fairly important to consider. Anyone know any "simple" way to find this out? Could it be so simple as counting the number of driveshaft revolutions per one rear wheel revolution?