Fitment questions?
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Product details
Original GM 11-inch-rotor spindles are converted to separate hubs and 12.19-inch discs with this package. This Forged Dynalite front hub 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: 140-8582.
- 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.
- Supplied hub wheel bolt circles: 5 x 4.5 in; 5 x 114.3 mm; 5 x 4.75 in; 5 x 120.65 mm.
- Included wheel stud thread: 1/2-20.
- Wheel-size guide: 15 in; 381 mm minimum nominal diameter; verify actual template clearance.
- Sold as one kit. Mounting hardware is included. Replacement hubs are 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
Identify the original 11-inch-rotor front spindle before selecting this GM hub conversion. The listed vehicles span 1970–1978, but the supported years and spindle qualifiers differ between models. DS480 requires modifications to the original spindle, so this installation needs more than removal of the old caliper and rotor. The new hubs carry their own 1/2-20 wheel studs and offer the specified wheel bolt circles; verify the intended wheel pattern before assembly. A front disc-kit application should not be confused with parking-brake equipment mentioned in a general vehicle note. This front package supplies no rear parking-brake conversion. Check wheel placement, bearing installation and hydraulic hose travel as part of the completed assembly.
The application table below identifies the model-year and factory-equipment combinations. Match the entire row, including its numbered notes.
Package and installation requirements
- Follow DS480 for spindle preparation and wheel clearance. Confirm brake-hose routing and master-cylinder compatibility as part of the complete system.
- Included hubs provide 5 x 4.5 and 5 x 4.75-inch bolt circles with 1/2-20 wheel studs.
- Wheel contact surfaces must be fully supported by the hub face. Where they overhang it, Wilwood requires its separately sold 6.60-inch-diameter x 0.20-inch steel spacer. For stamped-steel wheels that do not overhang, the instructions recommend the separate 6.15-inch-diameter x 0.09-inch hub shield. Verify the exact wheel with the installation instructions.
- Wilwood specifies a -0.28-inch hub offset per side. Confirm the resulting wheel position on the installed spindle along with the caliper-clearance template.
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 |
|---|---|---|---|---|---|---|---|
| 1970-1977 | Chevrolet | Camaro | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1970-1976 | Pontiac | Firebird | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Buick | Century | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Buick | Regal | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973 | Chevrolet | Chevelle | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Chevrolet | El Camino | All | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Chevrolet | Malibu | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Chevrolet | Monte Carlo | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | GMC | Sprint | All | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1977 | Oldsmobile | Cutlass | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973, 1977 | Oldsmobile | Cutlass Supreme | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1975 | Oldsmobile | Vista Cruiser | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973-1975 | Pontiac | Grand Am | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 6, 7 |
| 1973-1976 | Pontiac | Grand Prix | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1973 | Pontiac | GTO | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 6, 7 |
| 1973-1976 | Pontiac | LeMans | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1974-1976 | Oldsmobile | Cutlass Supreme | All | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1975 | Buick | Apollo | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1975-1977 | Buick | Skylark | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1975-1977 | Chevrolet | Nova | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1975-1976 | Oldsmobile | Omega | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1975-1976 | Pontiac | Ventura | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1976 | Cadillac | Seville | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1977 | Buick | Estate Wagon | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1977 | Buick | LeSabre | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1977 | Chevrolet | Impala | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 4, 5, 6, 7 |
| 1977-1978 | Oldsmobile | Custom Cruiser | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Oldsmobile | Delta 88 | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Oldsmobile | Omega | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Pontiac | Bonneville | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Pontiac | Catalina | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Pontiac | Firebird | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977 | Pontiac | Grand Prix | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977 | Pontiac | LeMans | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977-1978 | Pontiac | Phoenix | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1977 | Pontiac | Ventura | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Buick | Estate Wagon | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Buick | LeSabre | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Buick | Skylark | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Chevrolet | Camaro | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Chevrolet | Impala | With OE 11" Rotor Spindles | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
| 1978 | Chevrolet | Nova | Disc Brake Spindle | Disc | Drum | Front Kit | 1, 2, 3, 5, 6, 7 |
Application Notes
- Front kits fit 11" rotor spindles only.
- Requires modifications to original spindle
- Kit may fit some 15" wheels. Check wheel clearance diagram in kit installation instructions before purchase.
- Universal Flexline kits available: 220-7056 (14"), 220-7699 (16") or 220-8307 (18"). Choose correct length for your application.
- This kit supplies front service-brake components. No parking-brake mechanism or parking-brake cables are included; verify the vehicle's separate rear parking-brake system.
- Line kit included (manufacturer): None
- Front line-kit reference: 220-10509