1967-1987 C/K Series Trucks (Blazer/Suburban) Radiator for LS and LT Engine Swaps
With LS or LT engines installed in a 1967 to 1987 C/K Series Chevy or GMC, your stock radiator can barely keep pace during heavy towing and low speed traffic. This 20.75 inch tall core with dual electric fans installs directly into manual transmission C10, K10, Blazer and Suburban frames with no trimming required. The thick aluminum design absorbs heat rapidly while the fans engage only when needed to ensure consistent airflow in traffic or on steep grades. Precise inlet and outlet ports mirror the original layout to simplify hose routing and avoid fitting issues.
Efficient Thermal Management with Thickwall Aluminum Core
The 20.75 inch tall radiator core is crafted from high quality aluminum with thick walls that rapidly absorb and dissipate heat generated by LS or LT powerplants. This design lowers peak coolant temperatures under heavy towing or long climbs, minimizing risks of boil over. Aluminum's resistance to corrosion ensures sustained performance over years of exposure to road salt and moisture. The lightweight nature of the core also helps maintain original front end balance, preserving steering response and braking feel.
Intelligent Dual Fan System for Stop and Go Traffic
This radiator arrives with two pre installed electric fans that only activate when coolant temperatures rise or vehicle speed drops. By engaging on demand, the system prevents heat soak in congested conditions without drawing constant engine power. A custom molded shroud directs airflow uniformly across the entire core surface to eliminate hotspots and maintain stable temperatures. The on off control ensures efficient operation during extended idle periods or heavy load scenarios.
Direct Bolt In Fitment to C K Series Frames
Engineers designed the radiator to slip into 1967 to 1987 C/K Series Chevy and GMC truck frames without cutting, trimming, or adapter brackets. Inlet and outlet ports align precisely with LS and LT hose connections to simplify plumbing and avoid kinks. All original mounting locations are preserved, reducing vibration and ensuring a secure hold under rugged use. This precise fitment shortens installation time and lets classic trucks benefit from modern cooling technology seamlessly.
Corrosion Resistance with Bare or Black Epoxy Finish
Choose the polished bare aluminum option for a traditional engine bay appearance or opt for the black epoxy coating to add an extra layer of defense against road debris and moisture. Both finishes seal the core and end tanks, helping fend off rust and pitting in harsh climates. The epoxy version also masks minor surface blemishes, simplifying cleaning after off road excursions or heavy towing. Regardless of choice, each finish extends the service life of the radiator under demanding conditions.
For the same radiator but without fans consider our 1967-1987 GM Truck Radiator 20.75" Tall (Manual Transmission) - HD Cooling and trust in consistent cooling performance for your LS or LT swap.