2001 ford f150 4x4 gears?
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Joined: Sep 2002
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From: North Texas
Post No 3 is the solution. Yes, more gear will make it more efficient especially in town and on freeway some...but the C.D. has increased a pile due to the lift. Ever ridden a multi speed bicycle? Basic mechanical advantage, why aluminum rims make a vehicle have better econ than steel. Like aluminum driveshafts...some high end have carbon fiber. Why? Less rotational mass, this is basic physics.
Driving it in third on the freeway will simulate it regeared to 4.88:1 in overdrive. Report back with the increased fuel econ numbers, if the speedo was actually calibrated to the tires. It may or may not be at this point.
Ever driven a 10 speed truck? All they do is downshift on the freeway, it is dumb depending upon axle gearing and road speed. Total pain in *** Just like the GM 6L80E with 3.42:1 axle, constant up and down from 6-5. Pointless unless going 80mph, lock it in 5 and go 65-67, better econ. YES, I have a 2014 Burb in the stable and it is better.
Driving it in third on the freeway will simulate it regeared to 4.88:1 in overdrive. Report back with the increased fuel econ numbers, if the speedo was actually calibrated to the tires. It may or may not be at this point.
Ever driven a 10 speed truck? All they do is downshift on the freeway, it is dumb depending upon axle gearing and road speed. Total pain in *** Just like the GM 6L80E with 3.42:1 axle, constant up and down from 6-5. Pointless unless going 80mph, lock it in 5 and go 65-67, better econ. YES, I have a 2014 Burb in the stable and it is better.
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