1964-1967 Pontiac GTO A-Body LS and LT Swap Radiator
When fitting modern LS or LT powerplants into a 1964-1967 Pontiac GTO with an automatic transmission the radiator space and mount alignment become a major hurdle. This 15.5 inch tall radiator for A-Body GTOs installs directly in the factory core support preserving fan shroud alignment and correct hose angles without any cutting or bracket fabrication. Polished aluminum construction offers fast heat rejection and corrosion resistance under spirited driving or daily use. It also retains the original automatic transmission cooler line fittings to maintain proper coolant flow and delivers reliable temperature control from start up through extended highway runs.
Precision Fit for Original A Body Core Support
This radiator is engineered to match the factory 15.5 inch core height of 1964–1967 Pontiac GTO A Body cars, preserving the exact fan shroud alignment and hose angles set by the original design. By aligning with the stock radiator mounts and automatic transmission cooler line locations, it installs without the need for cutting or bracket fabrication. Enthusiasts will appreciate that all connections bolt up using common hand tools, keeping the structural integrity of the frame and firewall untouched. The result is a seamless integration of LS or LT powerplants that honors the GTO's classic engine bay geometry.
Aluminum Construction for Rapid Heat Rejection and Reduced Weight
Constructed entirely from premium aluminum, this radiator delivers exceptional thermal performance under sustained load or spirited driving. Aluminum's high conductivity moves heat away from the coolant quickly, lowering operating temperatures and helping prevent boil over during highway runs or track use. Its natural corrosion resistance keeps internal passages clear, reducing service intervals and maintaining reliable coolant flow. The lighter material also eases front end weight, preserving the GTO's original steering feel and road manners.
Finish Options Tailored to Restoration or Custom Builds
Choose between a bright bare aluminum finish for a period correct look or an in-house applied black epoxy coating for enhanced moisture protection in damp climates. The bare option highlights the original core architecture, adding a factory style gleam to classic engine bays. The epoxy finish bonds uniformly over fins and tanks, shielding the surface from road salt and humidity without blocking airflow through the core. These two distinct styles allow builders to coordinate the radiator appearance with any restoration or custom theme.
Built in the USA for Quality Control and Ongoing Support
Assembled in the United States, this radiator follows strict production guidelines for tank bonding and weld integrity, ensuring robust long lasting performance. Domestic manufacturing enables rapid design feedback, so any detail can be refined quickly for improved fit and finish. Locally built parts also offer easier access to technical assistance and replacement components, giving classic car owners confidence in long term reliability. This level of oversight supports strong resale value and consistent cooling efficiency throughout the life of your GTO swap.
This radiator ensures reliable temperature control and a precise fit. For the same radiator but with fans see our 1964-1967 GTO Radiator 15.5" Tall (Automatic Transmission) with Fans.