Out of stock
SKU: DUNRGM.3R2619.LS
MPN: RGM.3R2619.LS
The Radiator GM X-Body 68-74 LS Swap is a purpose-built cooling solution engineered for classic General Motors X-Body vehicles from 1962–1979 that have been retrofitted with modern LS-Series engines. This 26-inch-wide aluminum radiator delivers efficient dual-pass cooling designed to handle the heat output of contemporary LS powerplants while maintaining fitment in vintage engine bays where space is limited.
Constructed from aluminum with a polished finish, this radiator measures 26 in W × 18.5 in H × 3 in D and weighs 17.36 lbs. The dual-pass core design optimizes coolant flow direction for maximum heat rejection—a critical consideration when pairing a high-output LS engine with original cooling system infrastructure. Passenger-side inlet and outlet positioning allows straightforward plumbing integration without requiring extensive hose routing modifications or custom fabrication. The polished aluminum construction resists corrosion while delivering the 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 creates risk of thermal stress and potential catastrophic failure. The proven dual-pass architecture and OE-compatible dimensions make this unit a direct bolt-in solution that eliminates guesswork during the swap planning phase.
LS conversions on classic X-Body vehicles represent a popular path for drivers seeking modern reliability and performance without compromising period-correct exterior styling. Cooling capacity directly impacts engine longevity and tune ability—undersized or poorly positioned radiators force compromised thermostat settings and risk vapor lock. This radiator's compatibility with GM LS-Series engines and documented fitment for A-Body and X-Body platforms makes it a purpose-engineered choice rather than an adaptation of off-the-shelf components.
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