Are you positive that you have a 3.73 gear?
A 235 with your 28" tires with 4.11 stock gears would not start screaming until 55 MPH, and would continue to go faster than that if you dared.
Maybe your 235 is screaming at you for other reasons than gear ratio.
Carl

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission