1963-1966 C/K Series Chevy and GMC Truck Radiator for LS and LT Swaps
When fitting a modern LS or LT powerplant into a 1963 through 1966 C/K series Chevy or GMC pickup, maintaining proper engine temperature can be a challenge. This radiator combines a TIG welded aluminum core with dual fans tuned for steady airflow under both stop and go traffic and high load conditions. Featuring a direct fit for C10, C15, K10 and K15 models with a manual transmission, this design installs without major modifications. Builders will appreciate the corrosion resistant finish and durable construction that stand up to daily driving and track use.
Precision TIG Welded Aluminum Core
This radiator employs precision TIG welding to fuse its aluminum core and tanks, creating uniform, leak-resistant seams that withstand engine vibration and highway stresses. By using controlled heat input and clean filler material, each weld delivers consistent strength without compromising the alloy's integrity. The result is a lightweight yet robust assembly that resists fatigue over years of daily driving and spirited runs. Built in the USA, it meets strict quality standards for fit and finish, ensuring long lasting performance in classic GM trucks.
Dual Fan System for Consistent Cooling
Equipped with two dedicated electric fans, this radiator maintains steady airflow at idle, in traffic, and when the engine is under heavy load. Each fan pulls air through the full 28.25-inch core, preventing heat soak that can occur in stop and go situations. At highway speeds, the low-draw design allows the truck's forward motion to do most of the work, while the fans only engage as needed to support peak cooling. This balanced approach ensures your modern LS or LT swap stays within optimal temperature range on long hauls or track outings.
Engineered for 1963 to 1966 C/K Series Fitment
Specifically designed for 1963-1966 C10, C15, K10, and K15 Chevy and GMC trucks with manual transmissions, this radiator drops into the factory mounting locations without cutting, trimming, or fabrication. The shroud aligns perfectly with the original core support, preserving the truck's factory appearance while delivering modern cooling capacity. Prewired fan connectors and standardized hose outlets make installation straightforward, allowing builders to complete an LS or LT engine swap quickly and with confidence in the final result.
Trust this radiator to keep your LS or LT swap cool and consistent. For the same radiator but without fans see our 1963-1966 GM Truck Radiator Manual Transmission.