1967-1987 C/K Series Chevy GMC Trucks Blazer Suburban Radiator for LS and LT Swaps
For LS and LT builds in 1967 to 1987 C10, C15, K10 or K15 trucks and Blazer or Suburban models, the 1967-1987 GM Truck Radiator 18.5" Tall (Auto Trans) addresses core height and coolant path conflicts. The 18.5 inch aluminum core replicates factory height to preserve hood clearance while retaining inlet and outlet positions and mounting tabs. With integrated transmission fittings, zero fan count and choice of bare aluminum or black epoxy finish, it supports dependable coolant circulation under towing or stop and go driving. Proudly made in USA, it ensures consistent quality and fitment. As a direct drop in fit for square body chassis, it avoids custom brackets and hose rerouting.
Precision Cooling for 1967-1987 GM Trucks
This radiator is engineered to match the exact dimensions of 1967 through 1987 GM pickup and chassis-cab models with automatic transmissions. At 18.5 inches tall, the core aligns precisely with factory lower supports and upper mounting brackets, eliminating clearance issues common in custom installs. The built-in transmission fluid cooler ports accept standard GM cooler lines, ensuring reliable oil temperature control for late-model automatic units. By maintaining the original tank locations and mounting footprint, this design simplifies retrofit projects and preserves the truck’s front-end geometry without modification.
Seamless Integration with LS and LT Powerplants
Whether you're installing an LS or an LT motor, this radiator works in concert with MuscleRods crossmember and mount systems to ensure proper engine sit-back and driveline angles. The relationship between the radiator inlet height and the pump outlets on modern Chevrolet power blocks is critical for efficient coolant flow and hose routing. When paired with MuscleRods components, the assembly maintains ideal alignment of radiator hoses and transmission cooler lines, reducing stress on fittings and minimizing the risk of leaks or premature hose failure during acceleration and cornering.
Premium Construction and Domestic Quality
Manufactured in the USA from high-quality aluminum, this radiator offers a high capacity core for rapid heat rejection and long service life. Aluminum end tanks and brazed joint construction resist corrosion and handle repeated thermal cycling without cracking. The slim profile reduces under-hood volume while retaining superior cooling performance, making it ideal for both stock and modified cooling systems. Every unit undergoes pressure and leak testing before shipment, delivering reliable operation on the street or at the trailhead. Backed by domestic manufacturing standards, this radiator delivers consistent fitment and dependable performance in classic GM truck restoration and modern engine swap applications.
If you need the same radiator but with fans, consider our 1967-1987 GM Truck Radiator 18.5" Tall (Automatic Transmission) with Fans.