LS and LT Radiator with Fans for 1963-1966 C/K Series Chevy & GMC Trucks
If you are adapting an LS or LT engine into a 1963 through 1966 C and K Series Chevy or GMC truck the 1963 through 1966 GM Truck Radiator (Auto Trans) with Fans takes on the task of maintaining stable coolant and transmission temperatures under towing conditions and in city driving. Built with a TIG welded aluminum core and an integrated transmission cooler port this radiator ensures clean hose routing and uniform heat rejection across the entire surface. Installation is straightforward since it bolts to factory C and K frame mounts with original hardware and features dual electric fans that engage automatically when fluid sensors detect rising temperatures.
Precision TIG Welded Aluminum Core Construction
The radiator core and side tanks are joined by 100 percent TIG welding to create a unified assembly that withstands repeated thermal cycling without compromise. TIG welding fuses high quality aluminum without introducing foreign filler metals, preserving consistent wall thickness and avoiding heat flow restrictions. This single piece build delivers uniform heat rejection across the entire surface, which is essential when towing or crawling through traffic. The durable aluminum alloy resists corrosion and remains light in weight, reducing front end load on the frame. By maintaining full crossflow, coolant moves freely and rapidly transfers heat away from both engine and transmission.
Integrated Transmission Cooler Port for Neat Hose Routing
This radiator features a built in transmission cooler port that aligns precisely with factory plumbing layout for the automatic transmission. By matching the standard port position you avoid awkward hose runs that can kink or rub against other engine bay components. Clean routing simplifies installation and service access when inspecting or replacing cooler hoses. The direct port fitting also helps maintain proper fluid pressure and temperature by minimizing restrictions. As a result, transmission fluid remains within its safe operating range during heavy towing or low speed driving.
Automatic Dual Electric Fans for Uniform Airflow
The pair of electric fans comes preinstalled to draw air evenly across every fin, eliminating warm spots under heavy load. Mounted to the radiator face, each fan covers half of the core for complete coverage, even when engine RPM is low. Integrated temperature sensors trigger the fans automatically when coolant or transmission fluid reaches the set threshold, preventing heat build up before it can affect performance. This responsive fan control is critical for stop and go traffic or low speed hill climbs where natural airflow is minimal. High airflow capacity keeps fluid temperatures stable, protecting internal components and extending service intervals.
Coating Options to Enhance Durability and Appearance
Choose between a natural bare aluminum finish that develops a classic patina or a black epoxy coat that resists moisture, road salt, and surface wear. The epoxy application is carefully masked around mounting brackets and cooler ports to maintain exact fitment dimensions and secure hose connections. The raw aluminum option ensures maximum heat rejection from the underlying core, while the coated version provides an extra barrier against environmental contaminants. Both finishes remain easy to clean and preserve the radiator's structural integrity. Attention to this level of detail extends component life and keeps your engine bay looking sharp.
Built with precision and durability you can depend on. For the same radiator but without fans consider our 1963-1966 GM Truck Radiator Automatic Transmission.