Wilwood Small Ford 2.66-inch Rear Disc & Parking Conversion — Black Calipers, Plain 12.19-inch Rotors

A 2.66-inch axle offset and Small Ford housing end define this parking-brake conversion. This Forged Dynalite rear disc and parking-brake kit combines black powder-coated 4-piston calipers and 12.19-inch plain-face rotors. Founded in 1977 by Bill Wood and based in Camarillo, California, Wilwood Engineering designs and manufactures disc brake systems for motorsport, street-performance and specialized applications. Its range includes calipers, brake rotors, master cylinders, valves, fittings and brake lines, selected to work together as a complete brake system.

Technical Details

• Manufacturer part number: 140-7143.
• Rotor dimensions: 12.19 in; 309.63 mm diameter x 0.81 in; 20.57 mm thick.
• Rotor construction: Iron; vented; Plain Face friction surface.
• Calipers: 4 pistons; forged aluminum; stainless steel pistons.
• Caliper attachment: lug mount; 1/8-27 NPT hydraulic inlet.
• Caliper finish: Black Powder Coat.
• Rotor/hat wheel-stud clearance patterns: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm; 5 x 5 in; 5 x 127 mm.
• Rotor/hat stud-hole clearance diameters: 0.52 in; 13.21 mm. These are hole sizes, not wheel-stud thread specifications.
• The rotor/hat drilling does not change the vehicle hub or axle wheel bolt pattern.
• Housing/flange arrangement: Small Ford.
• Axle flange offset: 2.66 in; 67.56 mm.
• Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
• Sold as one kit. Mounting hardware is included. Hubs are not included.
• Brake pads are included; use the compound and installation instructions specified for this rotor package.
• Spindles, master cylinder, brake booster and hydraulic brake lines are not included.

Fitment & Compatibility

Small Ford housing ends use this kit’s 2.66-inch axle-offset arrangement. They should not be confused with either old-style Big Ford ends or the later Torino flange. Identify the end from the mounting dimensions in DS423, then measure the installed axle offset; an axle sold as a Ford replacement may have different ends. The internal-shoe parking brake is housed within the one-piece drum/rotor rather than operated by the service caliper. Check the planned cable connection and its operation when laying out the installation. The table’s 1990 Lincoln Town Car listing is still subject to these Small Ford measurements. Finally, use the wheel template on the actual wheels: the listed nominal diameter alone does not establish clearance around the four-piston caliper.

The application table below identifies the model-year and factory-equipment combinations. Match the entire row, including its numbered notes.

Package and installation requirements

• One-piece vented iron rotors include an inner drum for the parking shoes. The service caliper operates the disc face; parking is provided by the separate cable-operated mechanism.
• The package needs separately selected hoses and parking cables. Wilwood’s universal 330-9371 cable reference is not a promise of installation without modification.

Manufacturer references

• Wilwood product and configuration information
• Installation instructions
• Technical bulletin

PMB Performance brings more than 20 years of brake and parts experience to fitment questions. Send us the axle or spindle details, current brake equipment and intended wheel dimensions if you need help checking this kit.

WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.

Vehicle Applications

Application Notes

1. Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
2. Line kit included (manufacturer): None