Rear Brake Drum for Heavy-Duty GM Trucks

Dynamite Friction True Balanced Brake Drum 365-47036 is a rear brake drum application for select Chevrolet and GMC trucks and vans from 1972-1980. It is built for 11-inch rear drum brake setups and listed for rear axle positions on JB6-equipped vehicles and related GM heavy-duty configurations.

Key Features

• Rear brake drum for select Chevrolet C20, K20, P20, and GMC C2500, K2500, G3500 applications
• True Balanced Brake Drum line for consistent rotational balance
• Designed for 11-inch rear drum brake systems
• Fits multiple heavy-duty rear axle and brake configurations, including JB6 applications
• Part number 365-47036 for catalog and fitment lookup

Fitment Details

• Fits 1975-1980 Chevrolet C20, rear, 11" rear drum, JB6 brakes.
• Fits 1974-1980 Chevrolet C20 Suburban, rear, 11 inch rear drums, JB6 brakes, under 7,500 lb GVW.
• Fits 1976-1980 Chevrolet G30, rear, single rear wheels, 11 inch rear drum brakes, JB6.
• Fits 1978-1980 Chevrolet K20, rear, 11 inch rear drums, JB6 brakes, hub & rotor assembly.
• Fits 1975-1980 Chevrolet K20, rear, 11 inch rear drums, JB6 brakes, rotor only.
• Fits 1979-1980 Chevrolet K20 Suburban, rear, 11 inch rear drums, GM & Dana 44-5F & 44-6F axles, hub & rotor assembly.
• Fits 1977-1980 Chevrolet K20 Suburban, rear, 11 inch rear drums, rotor only.
• Fits 1972-1973 Chevrolet K20 Suburban, rear, 11 inch rear drums, rotor only.
• Fits 1975-1980 Chevrolet P20, rear, 11 inch rear drums, JB6 brakes.
• Fits 1979-1980 GMC C2500, rear, rear disc brake rotor designed for 11 inch rear drums.
• Fits 1979-1980 GMC C2500 Suburban, rear, 11 inch rear drums, under 7,500 lb GVW, JB6 brakes.
• Fits 1979-1980 GMC G3500, rear, single rear wheels, 11 inch rear drums.
• Fits 1979-1980 GMC K2500, rear, 11 inch rear drums, rotor only or hub & rotor assembly.
• Fits 1979-1980 GMC K2500 Suburban, rear, 11 inch rear drums, rotor only or hub & rotor.
• Fits 1979-1980 GMC P2500, rear, rear disc brake rotor designed for 11 inch rear drums.
• Fits 1978 Chevrolet K20 Suburban, rear, 11 inch rear drums, GM & Dana 44-5F & 44-6F axles, hub & rotor assembly.
• Fits 1976-1978 GMC G35, rear, single rear wheels, 11 inch rear drums.
• Fits 1977 Chevrolet K20, rear, 11 inch rear drums, JB6 brakes, GM & Dana 44-5F & 44-6F axles, hub & rotor assembly.
• Fits 1977 Chevrolet K20 Suburban, rear, 11 inch rear drums, JB6 brakes, rotor only or GM & Dana 44-5F & 44-6F axles, hub & rotor assembly.
• Fits 1976 Chevrolet K20 Suburban, rear, 11 & 13 inch rear drums.
• Fits 1974-1976 Chevrolet K20 Suburban, rear, rear disc brake rotor designed for 11 inch rear drums.
• Fits 1973 Chevrolet C20 Suburban, rear, rear disc brake rotor designed for 11 inch rear drums.

What This Brake Drum Helps Address

• Rear brake pulsation caused by an out-of-balance drum
• Brake noise related to worn or distorted drum surfaces
• Reduced braking consistency on 11-inch rear drum systems
• Service replacement needs on Chevrolet and GMC heavy-duty rear brake setups
• Fitment matching for JB6 and related GM rear brake configurations

Installation Notes

Verify rear axle, brake package, and drum size before ordering. This part is listed for specific Chevrolet and GMC rear applications, including JB6 brakes, single rear wheel models, and select hub & rotor or rotor-only configurations. Confirm the vehicle’s brake setup against the fitment notes for the exact application.

Quality Assurance

The True Balanced Brake Drum line is positioned for balanced brake service on listed GM truck and van applications. Part number 365-47036 should be matched to the vehicle’s rear brake configuration and axle notes for proper selection.