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Old 01-03-2009, 04:02 PM   #3 (permalink)
Big Dave
Master EcoModder
 
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Join Date: Jan 2008
Location: Steppes of Central Indiana
Posts: 1,313

The Red Baron - '00 Ford F-350 XLT
90 day: 27.99 mpg (US)

Impala Phase Zero - '96 Chevrolet Impala SS
90 day: 21.03 mpg (US)
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My jerry-built fastback fairing, even thogh it is too steep (17 degrees) improved my MPG by 1.5 MPG over a flat tonneau. They do work.

If you haven't the time or skills to make an aerocap, flat tonneaus (hard or soft) are available off the shelf. In fact if you have a Ford Super Duty short bed, I'll sell you one cheap.
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2000 Ford F-350 SC 4x2 6 Speed Manual
4" Slam
3.08:1 gears and Gear Vendor Overdrive
Rubber Conveyor Belt Air Dam
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