Gear ratio advice 3:73 or 4:30 on Super Duty
I am in the beginning stages of looking for a new TV and was looking at the Fords to start off with. (Dont worry Dodge fans I will look at them next) I see that Ford has either the 3:73 or 4:30 gears ...
Forum Discussion
Prior to the days of computers a diesel engine was always able to obtain it's greatest efficiency at the RPM where it produced its highest torque value. Today I don't believe that is necessarily true. As a general rule, though, gearing up and throttling down conserves fuel. So running 1700 rpm is great when you need less than 260 HP. So running in 6th at 1400-1700 is ideal for light loads. So again the low power demands go through the overdrive gears.
