Posted by Don in Missouri [69.179.183.75] on Saturday, January 08, 2011 at 13:34:44 :
In Reply to: 4:10 VS 3:73 VS 3:54 Gears posted by Frank [207.119.8.3] on Saturday, January 08, 2011 at 10:02:24 :
My '84 W350 with Cummins, 5 speed, and 3.54 gears can get near 20 mpg if I keep it under 65 mpg.
The worst it has ever gotten is 13 mpg, buring straight vegetable oil, going 78 mph towing a TJ on a trailer.
My '86 Jeep Grandwagoneer with AMC 360, 727, and 3.54 gears got 9 mpg.
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