DuraGo BD8798 Brake Drum - Front or Rear

DuraGo BD8798 Rear Brake Drum

The DuraGo BD8798 brake drum is built for rear drum brake applications that call for a 9.5-inch nominal drum diameter and a 5-lug, 4.75-inch bolt circle. With a cast iron / steel top construction and outer cooling fins, it supports consistent braking performance on classic GM platforms such as Chevrolet Camaro, Chevrolet Nova, Pontiac Firebird, and Chevrolet El Camino.

Key Features

• Cast iron / steel top construction for durable brake service
• Nominal drum diameter: 9.5 in. (241.3 mm)
• Maximum brake diameter discard: 9.59 in. (243.6 mm)
• Outside diameter: 11.88 in. (301.7 mm)
• Brake surface width: 2.41 in. (61.3 mm)
• 5 bolt holes with 4.75 in. (120.65 mm) bolt circle diameter
• Center hole diameter: 2.82 in. (71.6 mm)
• Outer cooling fins for heat management
• Overall height: 3.11 in. (79 mm)
• ABS tone ring not included

Detailed Description

DuraGo BD8798 is a rear brake drum engineered for vehicles using a 9-1/2 inch rear drum brake setup, including applications such as 1964-1969 Chevrolet El Camino, 1967-1974 Chevrolet Camaro, 1969-1974 Chevrolet Nova, 1970-1973 Pontiac Firebird, and select GMC van and truck platforms. The drum uses a composite construction with a cast iron braking surface and steel top, and it is manufactured in ISO-certified factories to meet fit, form, and function requirements. This part cross-references Anchor 8798 and Standard Ignition 2045 for the same application.

Common Repair Uses

• Rear brake pulsation caused by drum wear or out-of-round condition
• Brake fade related to heat buildup in drum brake service
• Reduced braking consistency from worn braking surfaces
• Noise or vibration from a damaged rear drum
• Service replacement for classic GM rear drum brake systems

Installation Notes and Tips

Verify drum diameter, bolt circle, center hole diameter, and brake surface width before installation. This drum is for rear position applications only and should be matched to the vehicle’s original drum brake configuration, including notes such as round axle cover or 2400 lb. RA where specified. Inspect shoes, hardware, wheel cylinders, and the axle flange for wear or damage before assembly. After installation, confirm proper drum clearance and brake adjustment.

Quality Assurance

DuraGo has over 45 years of aftermarket manufacturing experience and supplies brake drums through ISO-certified factories focused on fit, form, and function. BD8798 is part of the DuraGo brake drum and rotor program, which is built for professional repair use and catalog accuracy across classic Chevrolet, Buick, GMC, Oldsmobile, and Pontiac applications.