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Old 06-06-2009, 05:20 PM   #38 (permalink)
Big Dave
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Join Date: Jan 2008
Location: Steppes of Central Indiana
Posts: 1,319

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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stevey frac:

Sounds like you are hot on the trail of improved aerodynamics.

Have you looked into swapping in the numerically lower gears used in the Cobalt XFE? Numerically lower gearing will help you reap the benefits of better aero.
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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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