Quote:
Originally Posted by FED 387
The best MPG on a 7.3 is under 2000 RPM bout 1800 anything over1800-2000 and the MPG begins to go down QUICKLY-- mine has a 3:73 a real slug to get up to 62-65MPH but once your there it goes along nicely--- if it gets real hilly make sure to take it out of overdrive too--FED 387
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I have owned several 7.3 fords. All were awesome trucks and very reliable. All made their best power and fuel mileage above 2000 rpm. I tow a heavy 40 ft gooseneck. My trucks all had 4.10 gears. I have an older 1996 F350 dually w/7.3 that I use for short hauls. We call it the "Farm Truck".