Radiator 77-87 GM P/U Automatic Transmission

The Radiator 77-87 GM P/U Automatic Transmission from Cold Case Radiators is purpose-built for full-size Chevrolet and GMC pickup trucks equipped with automatic transmissions during the 1977–1987 model years. Whether you're restoring a classic C-series truck, upgrading cooling capacity on a modified engine, or replacing an aging OEM unit, this aluminum radiator delivers the thermal management these platforms demand. Designed by technicians who understand the cooling demands of vintage GM trucks, this unit addresses the chronic overheating issues common to original radiators while fitting seamlessly into factory mounting points.

This aluminum construction radiator features a polished finish that complements both stock restorations and custom builds, while its dual-pass core design maximizes heat dissipation compared to single-pass originals. The driver-side inlet and passenger-side outlet configuration maintains factory compatibility, eliminating the need for custom hose routing or modifications to existing cooling system plumbing. At 25 pounds and measuring 34.33 inches wide by 21 inches tall with a 3-inch core depth, the radiator balances effective surface area against the tight engine bay constraints of 1970s and 1980s truck architecture. The polished aluminum construction resists corrosion while providing the cooling efficiency necessary for reliable operation under load.

Mechanics and restoration enthusiasts favor Cold Case Radiators for vehicles experiencing thermal stress from highway driving, towing, or engine modifications such as carburetor swaps and higher-displacement builds. Installation is straightforward for anyone with basic mechanical skill—mounting tabs align with factory locations, and inlet/outlet placement matches original hose routing on automatic-transmission equipped models. This radiator is ideal for C10, C20, K5 Blazer, and similar full-size GM trucks from the late 1970s through mid-1980s seeking improved cooling reliability without sacrificing authenticity or requiring extensive fabrication work.