LS and LT Engine Swap Radiator for 1967-1987 C/K Series Trucks and Blazer/Suburban
When fitting LS or LT powerplants into C/K Series trucks or Blazer and Suburban models built from 1967 through 1987, the 1967-1987 GM Truck Radiator 18.5 inch Tall (Manual Trans) ensures coolant control remains as reliable as the factory design. Its aluminum core design bolts to original frame rails and core support, preserves coolant line routing and avoids modifications to steering linkages or hood latch geometry. Offering nearly twenty percent more fluid capacity than stock, it acts as a thermal reservoir under towing loads or spirited highway runs while resisting corrosion through precision machined alloy construction. Technicians familiar with the factory layout will appreciate the straightforward install and consistent flow that maintain stable engine temperature under varied driving conditions.
Exact Factory Height for Seamless LS LT Integration
This radiator is engineered to the exact factory height to match original core support position in 1967 to 1987 C/K Series trucks and classic Blazer and Suburban models when installing LS or LT powerplants. By preserving stock coolant line routing and mounting points, it eliminates the need to alter steering linkages or hood latch geometry during the swap. Compatibility with manual transmission layouts also ensures optimized clearance for the mechanical fan drive and avoids interference common with automatic units. Technicians can install the unit using factory brackets and hardware, maintaining familiar service steps and correct fan shroud alignment. This precision fit promotes consistent coolant flow under varied load and driving conditions while preventing contact with frame rails or filler panels.
Premium Aluminum Core for Enhanced Thermal Management
Constructed from premium aluminum, the core offers rapid heat rejection and weighs significantly less than traditional cast iron designs. Its 18.5 inch tall profile increases fluid capacity by nearly twenty percent, creating a thermal reservoir that dampens temperature spikes during towing or spirited highway travel. Uniform tube and fin spacing ensures even coolant distribution across the entire surface area, minimizing hot spots that can stress engine seals and gaskets. With its standard duty classification, it delivers reliable performance for daily driving and occasional towing up to rated capacities without risk of overheating. The reduced mass at the front of the vehicle can also yield a subtle improvement in steering feel and brake response by shifting less weight forward during maneuvers.
Versatile Surface Finishes for Superior Corrosion Resistance
Owners may embrace the natural oxide finish of bare aluminum for an authentic polished appearance or opt for a black epoxy coating to protect against corrosion in humid or salted road environments. The epoxy bonds tightly to each surface, forming a resilient barrier that resists oxidation and impact from road debris. In contrast, the natural aluminum oxide layer offers inherent protection while preserving the classic metal sheen. These finishing options are applied in the same US facility that handles core extrusion, tank fabrication, and final assembly, ensuring consistent surface preparation, curing times, and quality control across every unit. Both choices allow you to balance appearance with durability based on climate and styling preference.
American Made Production Ensuring Rigorous Quality Control
Each radiator is built start to finish in US facilities that oversee every stage of core extrusion, tank welding, and full assembly under one roof. Strict inspection routines verify wall thickness, weld integrity, and dimensional accuracy to prevent leaks and guarantee a true fit on manual transmission models. A detailed build record accompanies each unit, allowing quick reference for service or warranty support and ensuring long life even in demanding applications. Local manufacturing also simplifies lead times for replacement parts and offers direct access to technical expertise, creating a product that meets or exceeds original factory standards and upholds strong resale value.
Count on precise fit and consistent cooling performance and for the same radiator but with fans explore our 1967-1987 GM Truck Radiator 18.5" Tall (Manual Transmission) with Fans.