Aluminum Radiator GM 66-88 Cars Auto Trans

The Aluminum Radiator for GM 1966–1988 automatic transmission vehicles is a full-capacity cooling solution engineered to handle sustained heat rejection in classic and muscle car applications. Built from lightweight aluminum construction, this radiator delivers improved thermal efficiency compared to aging original equipment while maintaining compatibility with factory mounting points and automatic transmission cooling circuits on passenger-side inlet, driver-side outlet configurations.

Measuring 25.375 inches wide by 18.625 inches tall with a 3.125-inch core depth, this aluminum radiator maximizes cooling surface area within tight engine bay constraints common to first-generation and second-generation GM platforms. The natural aluminum finish resists corrosion in automotive engine environments while the optimized flow path ensures adequate transmission fluid cooling—critical for automatic transmissions under load or in extended driving conditions. At 16.3 pounds, the aluminum core is significantly lighter than cast iron original equipment, reducing overall vehicle weight while improving cooling response and cycle efficiency.

This radiator is purpose-built for restoration projects, performance upgrades, and replacement scenarios on 1966–1988 GM vehicles with automatic transmissions. Whether addressing cooling inadequacy from years of corrosion, upgrading a stock cooling system for higher-output engines, or completing a frame-off restoration, this aluminum core provides the flow rate and heat rejection capacity expected in period-correct applications. Buyers restoring Chevrolet, Pontiac, Oldsmobile, and Buick platforms from this generation will find this radiator meets dimensional and functional requirements for direct bolt-in installation without modification.