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 ...
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I full time and have a 2013 F350 6.7, crew cab, Long bed, 4x4 dually pulling a 14k fiver. It has the 3.73 gears. For my rig I would not consider the 4.30 gears. It pulls great, been all over Colorado, Wyoming, Montana and Idaho as well as the California Sierras and it just pulls and pulls. Love this engine. And I would not want a daily driver with 4.30 gears. I tow about 8000 miles/year and another 6-7000 non-towing.
I usually tow at 58-60 MPH which equates to peak torque of 1650-1700 RPM. I normally get 11.5-12 mpg towing and every once in a while I get over 12. The fact that it is a 4x4 and a dually negatively affects mpg. And those big mirrors ! I keep thinking I should fold them in for a full day of towing just to see how much they affect things.
MPG is affected more by speed (wind resistance)then anything else - no matter which gear set you have. You are pulling a 13 ft tall brick at 60 mph - Wind resistance is the big factor here.
I usually tow at 58-60 MPH which equates to peak torque of 1650-1700 RPM. I normally get 11.5-12 mpg towing and every once in a while I get over 12. The fact that it is a 4x4 and a dually negatively affects mpg. And those big mirrors ! I keep thinking I should fold them in for a full day of towing just to see how much they affect things.
MPG is affected more by speed (wind resistance)then anything else - no matter which gear set you have. You are pulling a 13 ft tall brick at 60 mph - Wind resistance is the big factor here.
