Radiator GM X-Body 68- 74 LS Swap

The Radiator GM X-Body 68-74 LS Swap is a purpose-built cooling solution designed for classic General Motors X-Body vehicles from 1962–1979 that have been retrofitted with modern LS-Series engines. This aluminum radiator is engineered to provide efficient dual-pass cooling, effectively managing the heat output of contemporary LS powerplants while fitting into vintage engine bays.

Constructed from aluminum with a polished finish, this radiator measures 23 inches wide, 7 inches deep, and 29 inches high, weighing 17.36 lbs. The dual-pass core design optimizes coolant flow direction for maximum heat rejection, which is crucial when pairing a high-output LS engine with original cooling system infrastructure. The polished aluminum construction not only resists corrosion but also provides a clean aesthetic preferred by restomod builders.

This radiator is ideal for LS conversion projects targeting Chevrolet Nova, Buick Skylark, Oldsmobile Omega, and Pontiac Ventura platforms—the core X-Body lineup. Engine swap builders prioritize cooling system reliability during break-in and sustained driving, where undersizing can lead to thermal stress and potential failure. The proven dual-pass architecture and OE-compatible dimensions make this unit a direct bolt-in solution that simplifies installation.