1967-1987 C/K Series Trucks and Blazer/Suburban Radiator for LS and LT Engine Swaps
When retrofitting a 1967-1987 C/K Series or Blazer/Suburban with an LS or LT motor, the factory radiator can struggle to maintain stable temperatures under load. The 18.5 inch tall manual transmission radiator addresses this by offering an OEM height drop in fit that sustains coolant flow during spirited driving or towing. Manufactured in the USA from high-quality aluminum, it matches factory mounting points and line routing to preserve engine bay clearance and service simplicity. With an optimized core height and corrosion resistant finish, it quickly rejects heat for dependable everyday driving.
American Manufacturing for Unmatched Consistency
Every radiator core is produced in US facilities that follow strict quality control practices from initial extrusion to final finish. With assembly and coating performed under one roof, there is consistent wall thickness and uniform adhesion of the epoxy option. This local build strategy not only ensures fit and finish but also supports quick access to replacement parts and technical support. Buyers benefit from a traceable production process that upholds high standards and adds value to the vehicle. Made in the USA construction translates into confidence in long service life and trouble free operation.
Enhanced Coolant Capacity for Stable Temperatures
The 18.5 inch tall core increases coolant volume by nearly 20 percent compared to stock units, providing a larger thermal reservoir. This added capacity slows the rate of temperature rise under heavy load, reducing thermal stress on engine components. Improved coolant flow through the full height of the core prevents hotspots and maintains uniform operating temperatures during towing or spirited drives. As a result, engine knock and head gasket strain are minimized, and overall reliability is improved in real driving conditions.
Lightweight Aluminum Construction Supports Better Vehicle Dynamics
Utilizing high quality aluminum throughout the core and end tanks keeps overall weight down without sacrificing strength. The reduced mass ahead of the radiator support aids in quicker steering response and shorter braking distances. Unlike heavier copper brass assemblies, the aluminum core resists fatigue from repeated heat cycles and remains true over years of service. This material choice also cuts down on corrosion compared to mild steel alternatives, giving you a durable cooling solution that enhances driving feel.
Trust in a precise fit and lasting durability. For the same radiator but with fans see our 1967-1987 GM Truck Radiator 18.5" Tall (Manual Transmission) with Fans.