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Old 01-20-2008, 12:19 PM   #2 (permalink)
Big Dave
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Join Date: Jan 2008
Location: Steppes of Central Indiana
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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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Another idea. Gap seals. Outfits that make aero mods for light planes are big on gap seals. Most aircraft panels are faired or at least fishscaled, but the flaps, ailerons and vertical stabilizer have gaps. They claim increased speed at level power settings.

Those clearly do work on 170 knot (200 MPH) aircraft but they may not be as effective for 70 MPH ground vehicles unless you have egregious gaps. The cab-to-bed gap on some pickups get overly large.
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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