LS and LT Radiator for 1967-1987 C/K Series Trucks, Blazer & Suburban
Tackling modern power outputs in a classic C/K Series swap calls for a radiator that can handle the sustained heat of LS and LT engines. The 20.75 inch tall aluminum core boosts coolant volume beyond factory capacity while precision fin geometry sheds heat during steep grades and heavy towing sessions. With LS and LT compatibility and direct fit to factory mounts on C10, K10, Blazer and Suburban models with automatic transmissions it ensures steady flow and temperature control across every mile.
Optimized Core Height and Fin Geometry for Maximum Cooling
The 20.75 inch tall core increases coolant capacity well beyond factory levels, allowing your LS or LT swap to shed heat more effectively during heavy towing and steep climbs. Precision-spaced rows in the fin pack expand surface area and promote thorough heat exchange on each coolant pass. This design minimizes temperature spikes, protecting head gaskets and bearings from excessive thermal stress over long haul or off-road sessions.
Aluminum Construction for Fast Heat Transfer and Corrosion Resistance
Built entirely from premium aluminum, the radiator core and side tanks offer superior thermal conductivity compared to traditional copper-brass units, quickly drawing heat away from the block. The lightweight structure reduces front-end weight while the material's natural oxidation layer defends against pitting and blockage. Its robust assembly resists warping after repeated heat cycles, ensuring consistent coolant flow and extending service intervals.
Protective Finish Options to Shield Against Environmental Damage
Choose the classic bare aluminum look or opt for a black epoxy coating to guard against road debris, moisture, and corrosion. Both finishes receive uniform in-house application to prevent uneven cooling and maintain peak thermal performance. Beyond enhanced durability, these options simplify routine cleaning and keep the engine bay looking sharp in both vintage and modern builds.
To complete your cooling setup with the same radiator but with fans, see our 1967-1987 GM Truck Radiator 20.75" Tall (Automatic Transmission) with Fans - HD Cooling. Count on MuscleRods for well-engineered performance that keeps your LS or LT motor running cool.