18.5 Inch Radiator for LS and LT Swaps in 1967-1987 GM C/K Trucks
When installing an LS or LT engine into a 1967 through 1987 SquareBody C/KSeries pickup this 18.5 inch tall radiator with fans aligns perfectly with factory mounts to eliminate trimming and adapter hassles. By mirroring original bracket spacing coolant hoses and transmission cooler lines slip into place with no extra fittings required. The aluminum core teamed with dual electric fans sustains uniform airflow at idle or under heavy tow loads to guard against heat soak on the road. Precision header tank placement and pre wired fan connectors simplify routing and bracket installation while preserving the classic engine bay aesthetic across C10 C15 K10 K15 frames.
Accurate Drop In Alignment for LS and LT Engine Swaps
This radiator is engineered to match the exact eighteen point five inch core height and bracket spacing found on 1967 through 1987 GM C10, C15, K10, K15, Blazer, and Suburban frames. By replicating factory dimensions, coolant hoses and transmission cooler lines slide onto existing fittings without any trimming or adapter fittings. The precise alignment not only speeds up installation but also reduces stress on hose ends and fittings to help prevent leaks. Installers benefit from a straightforward fit that preserves the original engine bay look and eliminates guesswork. This drop in solution is ideal for restoration projects and modern builds seeking reliable compatibility with LS and LT powerplants.
Dynamic Dual Electric Fans Ensure Consistent Airflow
Equipped with two electric fans, this assembly maintains uniform airflow across the entire aluminum core even when the vehicle is stationary or towing heavy loads. Each fan is controlled by a temperature sensor that activates only when needed, preventing unnecessary power draw and noise when cruising at speed. Pre wired connectors allow direct plug-in to factory fan circuits, removing the need for extra relays or wiring harness modifications. The result is a cooling system that automatically adapts to driving conditions, eliminating hot spots and resisting heat soak under stop-and-go traffic. This design offers peace of mind on long hauls and during performance driving sessions.
High Conductivity Aluminum Construction for Rapid Heat Transfer
The core and tank are built entirely from premium aluminum, selected for its superior thermal conductivity and resistance to corrosion compared with traditional copper brass units. An optimized tube and fin layout maximizes coolant volume and surface area, accelerating heat rejection during sustained highway runs and towing duty. Aluminum's natural light weight also reduces front end mass, contributing to better handling and improved fuel efficiency. Corrosion resistance cuts down on maintenance and extends service intervals, ensuring the cooling system remains effective for years of use. This material choice delivers a balance of performance, durability, and longevity for daily drivers and weekend tow rigs alike.
Finish Choices That Combine Protection and Custom Appeal
Customers may select a classic bare aluminum finish or a black epoxy coating applied to both core and tanks for added durability. The bare metal option highlights the natural luster of aluminum and keeps weight to a minimum, perfect for builders who value an authentic engine bay presentation. The black epoxy layer adds a protective barrier that resists chips, scratches, and oxidation in demanding environments, simplifying cleaning and upkeep over time. Both finishes are applied through a precise factory process to guarantee even coverage and long lasting adhesion. This flexibility in appearance lets vehicle owners tailor the radiator to their aesthetic preferences without sacrificing performance.
For the same radiator but without fans see our 1967-1987 GM Truck Radiator 18.5" Tall (Manual Transmission) Without Fans and trust in reliable cooling performance for your LS, LT swap.