I am looking to buy a 1999 F350 2wd crew cab long box with the 7.3l diesel and drive expedited freight hauling a dual axle trailer. The trailers max load could be only 5000 lbs. I am considering a 3.42 gear to improve mpg. Can any one tell me their mpg experience?
1999 power stroke 7.3l diesel mpg
Feb 14, 2007
2 Replies
'99 F350 Dually SuperCrew 4X4 7.3L Auto Trans. 4.11 rear gears It has 108,000 miles.
Stock: 17hwy, 12 towing 32ft travel trailer.
Hypertech Stage III, 21hwy, 13.5 towing.
Spdloader
The standard gears are 3.73 and 4.10. I wouldn't think of changing to a taller gear, you'll spend more time out of your overdrive if it is an automatic, so you wouldn't gain anything. I'd guess you'll get
10-11mpg depending on how tall the trailer is.Join the Discussion
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