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Old 06-06-2009, 05:52 PM   #39 (permalink)
stevey_frac
EcoModding Apprentice
 
Join Date: Jun 2008
Location: Cambridge, ON
Posts: 240

Jalilah - '07 Chevrolet Cobalt LT
90 day: 40.57 mpg (US)
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Quote:
Originally Posted by Big Dave View Post
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.
The cheapest way to do this is to swap in a whole used transmission. This would I believe through off the speedo and odometer, and requires dropping the engine. It would end up costing over $1000, and i can't justify it. Should i need to replace my transmission, i would try to do so then.
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