LS Swap Radiator for 1977-1982 Chevy Corvette Y-Body Manual Transmission
Whether you are completing an LS swap in a 1977 through 1982 Corvette Y body with manual transmission or refreshing the cooling system for spirited road work, the 1977-1982 Corvette Radiator (Manual Trans) delivers precise integration with stock frame rails and port locations. Constructed in the USA from premium aluminum cores and tanks, this single radiator uses 100 percent TIG welded seams for leak free operation under repeated thermal cycles. With options for bare aluminum or a protective black epoxy coating, it resists corrosion while maintaining lightweight balance. Designed to align with the original radiator brackets and hose connections, it installs without extra brackets or adapter plates to restore reliable coolant flow for sustained engine output.
Construction Quality
The 1977 to 1982 Corvette Radiator for manual transmissions pairs a tank and core assembly made from premium grade aluminum and fully joined by TIG process. This weld method yields uniform strength and flawless joins that resist stress at elevated temperature and vibration. The material grade ensures resistance to electrolytic corrosion often seen in mixed metal systems, and the full TIG process yields a smooth transition between tanks and core without gaps that trap debris or cause weak spots. Originating from a USA production facility, the unit meets tight alloy standards and delivers consistent thermal conduction while supporting the LS engine design in the C3 chassis.
Cooling Performance
Tailored for LS powerplants, the radiator features multiple cooling passages that shrink coolant temperature during extended operation. The core architecture ensures steady flow and heat exchange when the transmission cooler is under load. In tests under sustained load, coolant temperature remains within safe margins, reducing stress on engine components and lowering detonation risk. By matching native coolant hose runs and offering direct line routing, the unit keeps fluid paths short and bypass volume minimal. This configuration supports towing or competition use by maintaining stable temperature margins. The direct fit of the manual trans model also retains the factory side brackets for cooler line attachment without the need for aftermarket adapters.
Installation and Compatibility
This radiator fits the factory mounting points on the C3 chassis from 1977 to 1982 without frame modification or trimming. It aligns precisely with MuscleRods mounting brackets for the LS swap, ensuring correct engine placement and drivetrain angles. All port openings correspond to original connections for coolant and transmission cooler lines. The core faces the stock fan shroud section for simple integration with OEM or aftermarket fans. The radiator core depth and length follow the factory profile, so hood clearance and airflow from the front grille remain unaltered. Pre installed mounting bushings and vibration isolators simplify assembly and dampen chassis buzz.
Built from TIG welded aluminum in the USA and designed for a direct fit to LS swaps, this radiator ensures steady cooling under load. To complete your project, consider our 1977-1982 Corvette Radiator (Manual Transmission) with Fans, the same radiator but with fans.