1967-1987 C/K Series SquareBody Truck Radiator with Fans for LS and LT Swaps
Retrofitting an LS or LT powerplant into a 1967 through 1987 C/K Series truck can push a stock cooling setup beyond its limits, so the 1967-1987 GM Truck Radiator 18.5" Tall (Auto Trans) with Fans provides a direct replacement that maintains proper engine temperatures. It mirrors original mounting points and automatic transmission ports for a clean fit without fabricating brackets. Built from US made aluminum, both core and tanks resist corrosion and shed heat quickly during spirited driving or towing. Preinstalled dual electric fans draw minimal alternator power while holding steady airflow at idle and in stop and go traffic.
Precision Alignment with Factory Mounting Points
By mirroring the original inlet placement and automatic transmission ports, this radiator installs without modifying the stock transmission cooler lines on C10, C15, K10 and K15 models. The precise core height and tank width align with factory brackets to provide a hassle free installation process that avoids grinding or drilling. A correct fit ensures proper belt alignment and hood clearance for LS and LT engines. Eliminating fabrication reduces installation time and potential leaks at hose connections. This targeted fitment preserves the integrity of chassis mounting points and keeps cooling lines straight.
High Conductivity Aluminum Core for Rapid Heat Rejection
Using a tube and fin layout optimized for maximum surface area, the aluminum core rapidly draws heat away from coolant passing through each circuit. Aluminum's thermal conductivity, combined with US made tanks, ensures quick heat rejection during high load situations like towing or spirited drives. The material resists corrosion from road salts or coolant additives, extending service intervals. Its reduced weight lightens the front end and benefits vehicle balance and braking. The durable assembly stands up to vibration and flex without developing leaks or fatigue cracks over time.
Dual Electric Fans Ensuring Steady Airflow at Idle
Each fan is prewired for direct attachment to the factory relay and temperature switch, so integration into existing wiring harnesses remains straightforward. During demanding duty cycles, such as low speed towing or offroad crawling, both fans operate in unison to maintain cooler under hood temperatures. By only drawing power when required, the fans avoid unnecessary drain on the charging system and maintain battery health. Twin fans offer redundancy, so heat control continues even if one fan experiences a fault. Steady airflow behind the radiator core prevents hot spots and supports consistent coolant circulation.
Customizable Finish Options for Corrosion Resistance
The epoxy finish is applied in a controlled environment using a low temperature cure that bonds evenly to welded seams and corners. Bare aluminum options allow fabricators to display machining marks and TIG weld beads for a race inspired look. Whether opting for a protective coating or the natural raw finish, both options preserve the radiator's thermal output. The protective black layer also shields against stone chips and environmental contaminants on offroad builds. This coating versatility enables builders to match their truck's style without compromising performance.
Rely on a precise fit solution that maintains optimal engine temperatures. For the same radiator but without fans see our 1967-1987 GM Truck Radiator 18.5" Tall (Automatic Transmission) Without Fans.