My '38 can run 60 all day with the 3:73. You should have no problems at all driving highway speeds. This graph shows an engine speed of 3300 RPM @ 70 MPH with a 1 to 1 final drive ratio & the 3:73 rear end.

Last edited by Tiny; 08/05/2016 6:21 PM.

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.