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Old 08-03-2012, 04:44 PM   #177
CarlG
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Join Date: Nov 2010
Location: Anchorage, Alaska
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Default Re: F150 tranny with overdrive

4th gear (Overdrive) is .78 which is either 22% or 27% depending on whose math method you use. The rear end ratio is stock Model A, which I believe is 3.78

From my experience, which is only about 1,500 miles, this combination is very acceptable, runs well under 2,000 rpm at 55mph.
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