Thread: Over Drive
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Old 09-15-2009, 10:01 PM   #10
whbob
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Default Running in OverDrive

I tow with F150 5.4 6-speed with 3.55 rear end. Both 5th and 6th are OD. There is no lock-out for OD, only a tow/haul switch for the trans computer. On level ground, it stays in 6th. On grades it will shift to 5th (2000rpm at 60mph). The trans temp needle stays in the normal zone. Engine does not constantly shift or labor. 2720. Seems to work great - computer indicates right above 17mpg at 60-62mph on interstate.
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