The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Which gear ratio is best??

There is a code stamped on the front face of the third member, on the right side. It will consist of 2 letters. MA, MC, MD, MF, and MG are 3.90, MB and ME are 3.38. I don't show a listing for a 4.11 for '61, but the codes for that option for '62 w/4.11 are MT and MU.