F 150 2WD Pickup V8-5.4L SOHC SC VIN 3 (2003)
Brake Drum: Specifications
Rear Brake Drum Maximum Inside Diameter
Except Supercrew w/5 - M14 mounting bolts and 8.75 or 9.75 ratio: ..................................................................................... 281.69 mm (11.0902 inch)
7700 GVW w/10.25 ratio and steering axle: ........................................................................................................................... 307.10 mm (12.0906 inch)