18.5in Radiator with Fans for LS and LT Swaps in 1967-1987 GM C/K Series Trucks
When fitting an LS or LT powerplant into a 1967-1987 C/K Series truck engine bay temperatures can exceed what a factory radiator can handle. This 18.5 inch tall radiator with dual electric fans replicates the factory mounting layout and automatic transmission ports to ensure a drop in installation without cutting or extra brackets. Constructed from US made aluminum core and tanks, it provides rapid heat rejection and resists corrosion while the preinstalled fans draw minimal alternator power and maintain steady airflow during idle or low speed conditions.
Seamless Drop-In Installation with Factory Mounts
This radiator mirrors the original 18.5 inch core height and inlet locations on 1967–1987 GM C/K trucks to ensure a drop-in installation without cutting or extra brackets. By using the stock mounting points and automatic transmission ports, it preserves chassis integrity and hood clearance while securing the LS or LT engine in perfect alignment. This precision fit reduces installation time and removes the need for custom fabrication, letting installers focus on performance tuning. The result is a clean engine bay layout that maintains straight cooling lines and minimizes leak potential.
Aluminum Core and Tanks for Fast Heat Rejection
Constructed entirely from US-made aluminum, both the core and tanks offer exceptional thermal conductivity to shed engine heat rapidly. Aluminum's natural resistance to corrosion extends service life in daily driving or towing conditions, while its light weight helps reduce front-end mass. The robust alloy withstands vibration and road shock without cracking or fatigue, preserving structural integrity under load. Together, these properties keep engine temperatures stable and support overall reliability.
Dual Electric Fans for Reliable Traffic Cooling
Preinstalled dual fans deliver consistent airflow at idle and low speed traffic, preventing heat soak when the vehicle isn't moving. Each fan draws only the power needed to hold target temperatures, avoiding excess alternator load and preserving capacity for accessories. The twin-fan arrangement moves more air through the core than a single unit, maintaining cooler under-hood conditions during towing or extended stops. This steady cooling performance enhances engine efficiency and longevity.
Choice of Bare Aluminum and Epoxy Coatings
Builders can select the natural bare aluminum finish to showcase weld craftsmanship and mill marks or opt for a black epoxy coating for added corrosion protection and chip resistance. Both finishes are applied in the USA through a bonding process that does not impede heat transfer. The epoxy option also conceals stains and provides a neutral backdrop for engine components. This flexibility allows each build to express personal style while preserving rugged functionality.
This radiator ensures reliable temperatures and a clean installation. For the same radiator but without fans see our 1967-1987 GM Truck Radiator 18.5" Tall (Automatic Transmission) Without Fans.