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WOW! My truck turns 1450rpm at 60mph and 1700rpm at 70mph. This is with 325/55R22 tires and 3.73 gearing with my 4 speed auto (48RE) tranny. Mine runs around 1-2psi at 60mph on flat/level road. I've been getting 23mpg+ tanks lately with no aero or really much eco driving at all. I can't wait to see the improvements you will have with the GV in that ford. BTW mine will do 35mph at 850rpm locked in o/d.....up grades it will smoke a little though!
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