LS and LT Radiator for 1967-1987 C/K Series Chevy GMC Trucks Blazer Suburban
When installing an LS or LT powerplant in a classic 1967 to 1987 C K Series Chevy or GMC truck precision cooling is essential to control temperatures under heavy loads or idling. This radiator features a heavy duty core measuring 20.75 inches tall to clear manual transmission components and align with stock mounts on C10, K10, C15, K15, Blazer and Suburban Square Body chassis. Constructed in high quality aluminum the core resists corrosion and is available in bare or black epoxy finish while dual performance fans engage on demand to drive air through the fin assembly. Made in USA this unit bolts directly into stock rails and uses original hose locations without custom brackets making it a true bolt in choice for LS and LT swaps.
Precise Fitment for 1967–1987 GM Trucks
This 20.75 inch tall radiator is specifically designed for 1967 through 1987 GM truck frames equipped with manual transmissions. The package arrives ready for installation, complete with dual high-performance fans that provide uniform airflow across the core even at low vehicle speeds. It accommodates LS and LT engine platforms without requiring alterations to the stock sheetmetal. When used in conjunction with MuscleRods engine mounts, the assembly aligns exactly with factory mounting points, preserving proper water pump and accessory positioning while ensuring the correct drivetrain angle. This tailored approach removes any need for custom fabrication, making installations repeatable and reliable for builders and restoration specialists.
Robust Aluminum Construction
Every component of this radiator is crafted from premium aluminum to maximize heat transfer efficiency and resist corrosion. The core features a dense matrix of tubes and fins, expanding the contact area between coolant and ambient air. Precision TIG welding joins the core to the end tanks, creating a leak-proof seal capable of withstanding the pressures encountered in high-temperature applications. Inlet and outlet ports are machined to exact tolerances, ensuring a secure, vibration-free fit with standard hoses and fittings. Production is carried out entirely in the United States under stringent quality control measures, resulting in consistent performance across every unit.
Advanced Cooling Performance
By combining a tall, high-capacity core with a pair of strategically positioned fans, this radiator effectively dissipates the thermal loads generated by modern LS and LT engines. The increased core height not only boosts coolant volume but also extends the flow path for improved heat rejection under sustained load. The dual-fan arrangement features custom shrouds that channel airflow evenly across the entire core, eliminating hotspots that can degrade engine efficiency. Each fan is connected to an individual wiring harness with integrated relays and a temperature-sensing switch, so they only activate when needed. This intelligent control minimizes electrical draw and cabin noise while maintaining consistent operating temperatures during heavy towing, steep inclines, or spirited driving sessions.
To complete your same radiator but without fans, consider our 1967-1987 GM Truck Radiator 20.75" Tall (Manual Transmission) - HD Cooling.