Fitment questions?
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Product details
This F-body rear conversion retains the original C-clip axle arrangement. 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: 140-7148.
- 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 4.75 in; 5 x 120.65 mm.
- Rotor/hat stud-hole clearance diameters: 0.45 in; 11.43 mm; 0.48 in; 12.19 mm; 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: 12 Bolt Late.
- Axle flange offset: 2.75 in; 69.85 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
The rear axle must retain the OE C-clip arrangement used on the listed 1993–1997 Camaro and Firebird applications. Special housing ends and C-clip eliminator conversions need a different mounting assessment. This kit is based on the 2.75-inch axle offset shown in DS428. Wilwood specifies hat drilling for 7/16-inch, 1/2-inch and 12 mm studs, but the actual axle still determines the wheel bolt pattern. The supplied internal parking shoes require a correctly routed and adjusted cable connection. Check the existing parking hardware when planning the installation instead of assuming it attaches unchanged. The 12.19-inch rear rotor and caliper also need template clearance inside the chosen wheel, including the spokes; the original wheel diameter alone is not a clearance guarantee.
The application table below identifies the model-year and factory-equipment combinations. Match the entire row, including its numbered notes.
Package and installation requirements
- The one-piece iron drum/rotors incorporate the parking-brake drums; the internal shoes provide a mechanical parking brake independently of the four-piston service calipers.
- Parking-brake cables and hydraulic brake lines are separate. Wilwood references universal cable kit 330-9371; installation can require cable or vehicle modifications.
- Not for Special housing ends or C-clip eliminators.
- Wilwood specifies hat drilling for 7/16-inch, 1/2-inch and 12 mm studs. The listed front/rear flexline reference is 220-6746; confirm routing and length for the installed system.
Manufacturer references
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
| Years | Make | Model | Model option | Front brakes | Rear brakes | Kit application | Notes |
|---|---|---|---|---|---|---|---|
| 1993-1997 | Chevrolet | Camaro | Disc Brake Rear | Disc | Disc | Rear Kit | 1, 2, 3, 4, 5 |
| 1993-1997 | Chevrolet | Camaro | Drum Brake Rear | Disc | Drum | Rear Kit | 1, 2, 3, 4, 5 |
| 1993-1997 | Chevrolet | Camaro | w/ conversion to 1998-2002 F-Body spindles. Disc Rear. | Disc | Disc | Rear Kit | 1, 2, 3, 4, 5 |
| 1993-1997 | Chevrolet | Camaro | w/ conversion to 1998-2002 F-Body spindles. Drum Rear. | Disc | Drum | Rear Kit | 1, 2, 3, 4, 5 |
| 1993-1997 | Pontiac | Firebird | Disc Brake Rear | Disc | Disc | Rear Kit | 1, 2, 3, 4, 5 |
| 1993-1997 | Pontiac | Firebird | Drum Brake Rear | Disc | Drum | Rear Kit | 1, 2, 3, 4, 5 |
Application Notes
- For OE C-Clip axles only. Does not support Special End or C-Clip Eliminator modifications
- Hats drilled for 7/16", 1/2" & 12mm studs.
- Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
- Line kit included (manufacturer): None
- Rear line-kit reference: 220-6746