Sorry, but your title made me laugh... Both my cars have 4.10 gears and turn about 3500 RPM at 65 MPH. My Challenger runs a biggish cam for a street car and IDLES at 1200+ RPM. I simply can't imagine either one of mine loafing down the highway at such a low RPM w/o falling on their faces from being so far under the torque curve.