SKU: DEW32-6139013A
MPN: 32-6139013A
The DeWitts Radiator with Fans for 55-57 Chevy LS Auto Trans (Raw) is a purpose-built cooling solution designed specifically for classic Chevrolet fullsize cars undergoing modern LS engine conversions. This aluminum radiator delivers efficient heat rejection for automatic transmission-equipped LSX swap builds, combining period-correct dimensions with contemporary thermal performance to support high-output engine applications in vintage platforms.
Built from aluminum construction in natural raw finish, the radiator measures 22 inches wide by 21.25 inches tall with a 3.25-inch depth—dimensions engineered to fit within the factory engine bay of 1955–1957 Chevrolet fullsize cars while accommodating the larger cooling demands of LS powerplants. The center inlet and passenger-side outlet configuration matches stock plumbing layouts, simplifying hose routing and minimizing modification requirements. Integrated fan setup ensures adequate airflow across the core during idle and low-speed operation, critical for automatic transmission vehicles where engine load remains steady during cruise.
This radiator addresses a core challenge in LS swap projects: maintaining reliable cooling in cars designed for significantly smaller, lower-output engines. The 1955–1957 Chevy platform offers iconic styling and handling potential, but factory cooling systems cannot handle the sustained heat output of modern V8 engines. This DeWitts unit bridges that gap with a compact footprint that respects originality while delivering the thermal capacity required for long-distance cruising and reliable street performance. Builders prioritizing both authenticity and functionality find this specification particularly valuable—the raw aluminum finish allows custom painting to match engine bay aesthetics, while the integrated fan eliminates the need for aftermarket fan mounting hardware.
Weighing 28 pounds, the complete assembly integrates into the existing radiator support with minimal cutting or fabrication. Automatic transmission compatibility is essential for street-driven conversions where consistent engine temperatures prevent transmission fluid degradation—a critical factor in reliability over time.
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