1970-1981 Camaro and 1978-1988 G-Body Radiator for LS and LT Engine Swaps
When an LS or LT V8 swap pushes the stock cooling system beyond its comfort zone, the 1970 to 1981 Camaro and 1978 to 1988 G body Radiator (AutoTrans) restores reliable temperature control for your automatic transmission project. This radiator uses a fully TIG welded aluminum core and tanks to speed heat rejection and resist corrosion when temperatures climb during spirited driving. Installation drops into factory frame rails and aligns perfectly with 4L60E and 4L80E transmission cooler ports without cutting or custom brackets. Consistent coolant flow and pressure are maintained even under heavy load or extended highway use, keeping both engine and transmission running smoothly.
Precision TIG welded aluminum structure
This radiator core and tanks are assembled with complete TIG welds using high quality aluminum, resulting in strong joints that can withstand repeated thermal cycles. The pure metal connections promote uniform heat transfer across the entire body of the radiator, preventing areas of inefficiency under high engine load. By eliminating overlapping seams found in other designs, this construction method reduces the risk of cracks and leaks that develop from vibration. Each unit undergoes a rigorous inspection process in domestic facilities to verify weld integrity and dimensional accuracy for an exact fit with LS and LT swaps. The result is a durable assembly that maintains consistent coolant pressure during spirited driving and heavy towing applications.
Engineered flow path for LS and LT thermal control
Inside the core, coolant flows through a specially designed tube and fin arrangement that matches the heat output profile of modern LS and LT engines. The sequential flow path ensures hot coolant does not bypass cooler areas, while maximizing contact with the aluminum fins for rapid heat rejection. This approach also reduces air pockets that can impede flow and lead to hotspots near the engine block. The design protects the viscosity stability of transmission fluid in 4L60E and 4L80E units by avoiding sudden temperature spikes. As a result, engine operating temperatures remain stable even under sustained use, helping reduce component stress and extending service intervals.
Direct fitment in Camaro and G Body frames
This radiator drops into factory frame rails on 1970 to 1981 Camaro and 1978 to 1988 G Body vehicles with no need for cutting or custom brackets. Upper mounts align precisely, and the transmission cooler ports on 4L60E and 4L80E configurations match the original locations, simplifying hose routing and reducing leak points. Technicians benefit from a straightforward install process that keeps the engine bay layout close to factory, cutting installation time and preserving chassis integrity for a clean appearance. The secure fit ensures stable coolant flow and reliable pressure under all driving conditions.
Customizable corrosion resistance with protective coating
Builders can select the natural bare aluminum finish or choose a black epoxy coating for enhanced protection against road salt and moisture. The bare finish resists corrosion by allowing any surface oxidation to remain stable without flaking, while the epoxy barrier seals microscopic pores and prevents underfilm rust. Both finishes are applied under controlled conditions to maintain uniform thickness and strong adhesion. This choice of coating ensures long term durability and offers the flexibility to match polished or stealth engine bay themes.
Rely on MuscleRods for reliable engine and transmission temperature control. For the same radiator but with fans see our 1970-1981 Camaro and 1978-1988 G body Radiator (Automatic Transmission) with Fans.