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at 55mph..in 5th gear with 30's it says 3500


Unless your axles have 5.29's in them (incredibly unlikely) your tach or speedo is simply off. Speedo is easiest to check with a GPS, or even a passenger with a stopwatch and an open road, milepost markers and some basic math.

this is why I asked the question on what everyone is running because using gps at 55mph,it sounds like it is wound up at 3500 rpm.I mean it just doesn't feel like it wants to go much faster.I mean I can but I have had it near 3800 rpm at somewhere near 60 mph or so.I thought maybe this thing is just that weak...lol
Something must be just off cause I get pretty good gas mileage.