1964-1967 Pontiac GTO A-Body LS and LT Swap Radiator 15.5 inch tall
If you're tackling an LS or LT swap in a 1964-1967 Pontiac GTO A Body chassis, radiator space and mount alignment become immediate hurdles. This 15.5 inch tall radiator for automatics fits directly into the original core support and preserves fan shroud alignment plus proper hose angles without any cutting or fabrication. Constructed from polished aluminum, it resists corrosion under spirited drives and includes factory cooler fittings for the automatic transmission to maintain correct coolant flow. From idle starts to highway cruising, this radiator delivers consistent temperature control while honoring the GTO's classic engine bay layout.
Engineered for Original A Body Core Support
This radiator replicates the factory 15.5 inch core height on 1964 through 1967 Pontiac GTO A Body models, preserving the exact fan shroud placement and hose routing defined by the original design. By aligning with stock mount points and automatic transmission cooler fittings, it installs seamlessly without any cutting or custom bracket work. Common hand tools are all that's needed to secure it in place, so the structural integrity of the frame and firewall remains untouched. The result is a direct bolt-in solution that upholds the GTO’s iconic engine bay geometry when swapping in modern LS or LT powerplants.
Aluminum Design for Enhanced Cooling Efficiency
Crafted from premium aluminum, this radiator capitalizes on metal’s superior thermal conductivity to transfer heat rapidly away from coolant passages. That rapid heat rejection helps maintain stable operating temperatures during spirited street driving or extended highway runs. Aluminum’s natural resistance to corrosion keeps internal channels clear, reducing service intervals and ensuring consistent coolant flow over time. Its lightweight construction also restores more of the GTO’s original front-end balance, preserving steering feel and handling characteristics.
Flexible Finish Choices for Restoration or Custom Projects
Builders can choose a bright bare aluminum version for a period-correct aesthetic or opt for a black epoxy coating for enhanced environmental protection. The bare finish showcases the core architecture and polished tanks, giving classic engine bays a factory-style gleam. Alternatively, the black epoxy bonds uniformly over fins and end tanks to guard against moisture and road‐salt exposure without impeding airflow through the core. These two distinct options allow retrofits to blend seamlessly with both stock restorations and modern custom themes.
Domestic Production Ensures Consistent Quality
Manufactured in the United States, this radiator follows rigorous bonding and weld standards to guarantee leak-free performance and structural integrity. Local fabrication provides faster design feedback and ongoing refinement, so fit and finish remain precise from one batch to the next. It also means easier access to replacement parts and technical support for long-term maintenance. This level of oversight not only bolsters reliability in everyday use but also supports stronger resale value for your GTO swap project.
This MuscleRods radiator offers a precision fit and consistent cooling performance for your LS or LT swap. For the same radiator but with fans see our 1964-1967 GTO Radiator 15.5" Tall (Automatic Transmission) with Fans.