Rear Axle Codes
Code Manufacturer Capacity(lb/kg) Ratio
F-150, F-250, F-350, & F-Super Duty with Conventional
F-150, F-250, & F-350 with Limited Slip
Transmission Code
Code Manufacturer Description Model Gear Ratios (R : 1,2,3,4,5,...)
U Ford Auto 4spd OD AODE
Engine Line-Up and Specs.