1973-1977 A-Body LS Radiator for Automatic Transmission
For a 1973-1977 A Body LS swap paired with an automatic transmission, the 1973-1977 A Body LS Radiator (Automatic Trans) addresses the challenge of cooling in a confined engine bay without custom alterations. Constructed from high grade aluminum with TIG welded tanks, its lighter weight eases strain on frame mounts and disperses heat efficiently across the core while aligning with factory mounting points on Chevelle, Monte Carlo and El Camino models. With evenly distributed internal flow passages, hotspots are eliminated during extended runs or spirited driving. By maintaining stock hose connections and frame brackets, this unit offers a direct bolt in fit that lets installers concentrate on the next stage of their LS conversion.
Exact Mounting Alignment for 1973 to 1977 A-Body Automatics
This radiator is engineered to follow the original mounting points and hose connections found on 1973 to 1977 A-Body vehicles fitted with an automatic transmission. By matching factory frame brackets and stock routing, installers achieve a direct bolt in placement without cutting or custom brackets, preserving the classic under-hood layout. Precise fitment means the radiator seats securely in the tight engine bay, maintaining proper clearance for accessories and preventing stress on coolant lines. Leak risks are minimized from the outset as hoses align naturally and factory hardware secures the unit. This focus on exact alignment reduces installation time and helps builders move swiftly to the next phase of their LS engine swap.
High-Grade Aluminum Core with TIG Welded Construction
At the heart of this cooling solution lies a core and tank assembly crafted from high-grade aluminum that combines light weight with robust strength. Full TIG welded seams bond the tanks to the core with minimal distortion, producing weld beads that resist cracking under repeated thermal cycles and vibration. Aluminum's natural corrosion resistance and superior heat conduction enhance thermal efficiency while reducing overall weight in the engine bay. The use of TIG processes ensures consistent material fusion and leak-free performance even under high pressure. Manufactured in the USA to exacting standards, this construction delivers reliable service mile after mile.
Engineered Flow Path for Uniform Heat Distribution
Internal flow passages are designed to guide coolant evenly across the entire core area, eliminating localized hot spots that can lead to header gasket failures or uneven block wear. By balancing coolant velocity and exposure to air passing through the fins, the radiator achieves rapid heat transfer whether cruising at highway speeds or powering through track sessions. Consistent flow also prevents cavitation and maintains stable system pressure, safeguarding pump life and seal integrity. This approach limits sediment collection within tubes, making routine flushing more effective and preserving performance over time. The result is a smooth, predictable temperature control under a wide range of driving conditions.
Bare Aluminum and Black Epoxy Coatings for Corrosion Protection
Builders can choose between a natural bare aluminum finish or a durable black epoxy coating to suit their restoration theme or custom style. The bare surface maximizes thermal conductivity by allowing direct metal-to-air heat exchange and can be cleaned easily with standard solvents to maintain peak performance. The epoxy option adds a protective barrier against road salts, coolant additives and environmental moisture without compromising cooling efficiency. Both treatments resist surface wear and help prevent oxidation, extending service life in harsh climates. This flexibility enables installers to match appearance preferences while ensuring long lasting corrosion defense.
Count on MuscleRods for reliable cooling in your LS swap and for the same radiator but with fans consider our 1973-1977 A-Body LS Radiator (Automatic Transmission) with Fans.