88-98 GM 1500 P/U LS Swap Radiator

The 88-98 GM 1500 P/U LS Swap Radiator from Cold Case Radiators is purpose-built for truck owners undertaking an LS engine conversion on first-generation GMT400 Chevrolet and GMC half-ton pickups. This radiator addresses a critical cooling challenge in LS swap projects: the factory cooling system cannot handle the heat output of modern LS engines in vintage truck platforms. Whether you're swapping a 5.3L, 6.0L, or 6.2L LS powerplant into your 88–98 C1500 or K1500, proper engine cooling is essential for reliability and longevity.

This aluminum radiator is engineered specifically to accommodate LS engine bay geometry while delivering superior heat dissipation compared to stock cooling cores. The GMT580 core design maximizes coolant flow pathways and fin density to efficiently extract heat, even under heavy towing or high-RPM driving conditions. Its compact footprint and lightweight construction allow fitment within the original radiator support without extensive modification, while aluminum construction resists corrosion and provides excellent thermal conductivity.

LS swap enthusiasts, classic truck restorers, and performance mechanics rely on this radiator to meet the demands of modern engine technology in vintage truck chassis. The radiator integrates seamlessly with LS water pump outlets and accepts both mechanical and electric fan configurations, providing builders with flexibility in their final drivetrain setup. Installation is straightforward for anyone familiar with basic automotive mechanics.