1963-1966 C/K Chevy GMC Truck Radiator for LS and LT Swap with Auto Trans Fans
When converting a 1963 to 1966 C10 or K10 Chevy or C15 or K15 GMC chassis for an LS or LT engine and automatic transmission this radiator ensures reliable coolant and fluid control in urban traffic or during towing. Its aluminum core and tanks employ 100% TIG welded construction to ensure consistent heat rejection while dual electric fans triggered by coolant and transmission sensors deliver steady airflow at low speeds. Finished in bare aluminum or black epoxy coat it bolts to original C and K frame brackets and features an integrated transmission cooler port aligned to factory fittings for simplified hose routing. Manufactured in the USA it offers corrosion resistance and light-weight durability for demanding swap projects.
Design and Construction
The 1963-1966 GM Truck Radiator is built from premium grade aluminum for maximum heat transfer and corrosion resistance. Both tank and core panels are 100% TIG welded by certified fabricators in the USA. Featuring a core thickness of two rows of 1.5 inch tubes, the radiator boosts coolant capacity and flow rate compared with stock units. Every assembly is pressure tested at 150 psi to verify leak free performance prior to shipping. A robust filler neck and precision sealed end caps prevent coolant loss and extend maintenance intervals.
Cooling and Fan System
This unit is outfitted with two high performance electric fans preinstalled on the core face. Each fan draws air through the fin pack to maintain consistent coolant temperature under stop and cruise traffic conditions. Fans incorporate a heavy duty motor designed for continuous duty at elevated under hood temperatures. A precision molded fan shroud secures blades close to tubes for efficient suction and clearance from intake plumbing. High density cooling fins optimize air to coolant contact while resisting road debris. A plug in wiring harness and thermostatic controller enable simple integration with factory transmission sensors. Thermostatic activation ensures fans engage only when coolant temperature rises above a set point, reducing alternator load and improving electrical system reliability.
Fitment and Integration
Specifically designed for LS and LT engine swaps in first generation GM C10 trucks with an automatic transmission, this radiator is a direct replacement for original equipment cooling systems. It integrates with MuscleRods mounting brackets to ensure precise engine position and maintain correct drive line angles, reducing universal joint margin error and drivetrain stress. No additional cross member or frame modification is required, and the unit aligns with factory bumper supports and side channels for clearance. Radiator hose ports and transmission cooler fittings match OE locations, delivering a seamless installation process without trimming or adaption kits.
Built in the USA for consistent cooling in LS and LT swaps, this radiator delivers dependable service. For the same radiator but without fans consider our 1963-1966 GM Truck Radiator Automatic Transmission.