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Old 08-08-2007, 07:50 AM   #1
special-K
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Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
250/overdrive/what gears?

I want to built a truck for economy.It`ll be a shortbed with a 250-6 and 4L60E or 700r4.I`m wondering what gear ratio I should go with to keep it up in o/d but be as high as possible for mileage.Too high gears around town can dog your mileage.I may go with a manual overdrive which will give more control,but I`d want it to be able to stay in o/d as much as expected going up hills.
has anyone played with this idea or had any actul experience with doing this?My thoughts are the 3.08s are out.Maybe 3.42s,or do I need 3.73s?
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Tim

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