1967-1987 C/K Series Radiator for LS and LT Engine Swaps
Whether you are installing an LS or LT engine into a 1967 through 1987 C/K Series SquareBody chassis, this GM Truck Radiator 20.75 inch tall automatic transmission version with dual fans delivers targeted thermal control for heavy duty driving. Its heavy duty cooling core spans the full 20.75 inches in height, and the two electric fans draw air uniformly across the core surface. Made entirely from aluminum in the USA, it fits 1967 through 1987 C10 and C15 Chevy and GMC trucks, K10 and K15 models, as well as Chevy Blazer and Suburban frames. Available in bare aluminum or black epoxy coat, this radiator meets LS and LT engine swap fitment requirements in C/K Series applications.
Engineered for GM Truck Platforms
The HD Cooling 20.75 inch Tall Radiator is precision built for 1967 to 1987 GM Truck chassis fitted with automatic transmission applications. Purpose designed for LS and LT powerplants, this unit retains original mounting geometry and accommodates stock heater lines and water hoses without modification. Its 20.75 inch height is calibrated to enhance coolant volume and surface area, reducing heat soak during heavy highway use or towing. By matching the factory shroud cutout and cap position, the radiator offers plug and play installation that preserves underhood clearance for most power steering and accessory drive configurations.
Premium Aluminum Construction and Cooling Fans
Constructed from top quality aluminum, this radiator core features tightly spaced tube and fin architecture to optimize thermal exchange. The heavy gauge tanks are welded with precision to ensure leak free operation under high coolant pressure. Two high efficiency electric fans are factory installed and wired for straightforward connection to existing harnesses. Designed to provide balanced airflow at low engine speeds, the fans reduce radiator temperature by up to 25 percent when idling or in stop and go traffic. With all components assembled in the USA, this radiator meets stringent durability standards and offers consistent performance across varied driving conditions.
Precision Fit with MuscleRods Mount Systems
This radiator is engineered to integrate seamlessly with MuscleRods mount systems, guaranteeing accurate engine alignment and proper drivetrain angles. By maintaining exact stack height between the block and frame, it ensures that accessory drive belts remain in line and that the water pump pulley engages with no added stress on the shaft. The direct mounting points remove the need for custom brackets, which simplifies installation and reduces the likelihood of vibration related issues. Builders focusing on a professional grade outcome will appreciate how this radiator and the MuscleRods framework function as a cohesive solution for reliable thermal management and mechanical harmony.
This radiator meets LS and LT engine swap demands in 1967 to 1987 C/K truck automatic trans setups and keeps temps low under load. For the same radiator but without fans, consider our 1967-1987 GM Truck Radiator 20.75" Tall (Automatic Transmission) - HD Cooling.