Foxbody Mustang Brake Specifications

Even rolling out of the factory, the stock brake setup employed by Ford on the Foxbody Mustang was less than adequate to effectively control the power and speed capable of the accompanying stock 302 cu (5.0L) V8 engine. Comprised of cast-iron, centrally vented rotors up front clamped by single piston calipers, and a basic drum setup in the back, these brakes really weren't up to par to handle even a stock 225HP Foxbody. Listed below are the full sizing and material specifications of the brake systems installed over the Foxbody era.

1979-1993 V8 Mustang Factory Brake Specifications
  1979 1980-81 1982-86 1987-93 1993 Cobra
Front Rotors
Front Disc, cast-iron vented Disc, cast-iron vented Disc, cast-iron vented Disc, cast-iron vented Disc, cast-iron vented
Rotor Diameter 10.06 in 9.31 in 10.06 in 10.84 in 10.84 in
Rotor Thickness 0.870 in 0.870 in 0.870 in 1.03 in 1.03 in
Rotor Area 275.6 sq.in 249.8 sq.in 275.6 sq.in 316 sq.in 379.3 sq.in
Pad Composition Asbestos Semimetallic Semimetallic Semimetallic Semimetallic
Rear
Type Drum, solid unvented Drum, solid unvented Drum, solid unvented Drum, solid unvented Disc, vented
Diameter 9.0 in 9.0 in 9.0 in 9.0 in 10.07 in
Width 1.73 in 1.73 in 1.73 in 1.73 in 0.945 in
Shoe/Pad Composition Asbestos Asbestos Asbestos Organic Organic
Hydraulics 1979-83 1984-86 1987-93 (2.3L) 1987-93 (5.0L) 1993 Cobra
Master Cylinder Bore Diameter 22.2 mm 21.0 mm 21.0 mm 21.0 mm 25.5 mm
Caliper Bore Diameter 60.0 mm 60.0 mm
SVO: 72.9 mm
60.0 mm 60.0 mm 72.9 mm front, 45.44 mm rear