LS and LT Radiator for 1964-1967 Pontiac GTO Manual Transmission A-Body
When fitting a modern LS or LT powerplant into your 1964-1967 Pontiac GTO A Body with manual transmission, precise cooling is non negotiable. The GTO Radiator 15.5" tall (Manual Trans) is engineered to replicate the factory core height and maintain original inlet and outlet port locations, dropping directly into stock mounts without requiring frame rail modification. Constructed from high quality aluminum and offered in bare or black epoxy finish, it preserves fan shroud alignment and hose angles for correct coolant flow under sustained driving. With 15.5 inch core height matching factory dimensions and zero fans included, this radiator ensures stable engine temperatures in LS and LT engine swap applications.
Tailored Fit for 1964 to 1967 GTO Models
This radiator is engineered specifically for 1964–1967 GTOs equipped with manual transmissions and factory 15.5" tall core radiators. By matching the stock core height, it installs without trimming or spacing adjustments, maintaining the original engine-to-radiator clearance. Compatibility with LS and LT powerplants ensures that enthusiasts upgrading to modern small block platforms retain proper engine placement and radiator positioning, avoiding interference with the crossover intake or frame rails.
Robust Aluminum Build
Constructed from high-quality aluminum, this radiator offers a balance of durability and efficient heat dissipation. The design features multi-row cores with expanded tube surfaces that accelerate coolant circulation. Aluminum end tanks are welded under precision-controlled conditions to eliminate leaks and resist corrosion over years of service. The result is a component capable of handling the higher thermal load of modified LS and LT engines without the weight penalty of copper-brass designs.
Integration with MuscleRods Mounts
Designed to interface seamlessly with MuscleRods mounting brackets, this radiator aligns perfectly within the GTO’s engine bay. Proper mounting angle is critical for efficient coolant flow and reducing stress on hose connections. By adhering to MuscleRods specifications, the radiator maintains the correct tilt for bleed-free operation and ensures consistent drivetrain geometry, avoiding unwanted torque steer or drive shaft vibration that can arise from misaligned engine installations.
Proudly Made in the USA
Every unit is manufactured domestically under strict quality protocols. From raw aluminum extrusion to final pressure testing, production remains within American facilities to guarantee consistent material quality and workmanship. This focus on local manufacturing allows for tighter dimensional tolerances, rapid customer support, and the assurance that each radiator leaving the factory meets the performance demands of classic GTO restorations and modern engine swaps alike.
For the same radiator with included fans, consider our 1964-1967 GTO Radiator 15.5" Tall (Manual Transmission) with Fans. Trust MuscleRods for precise quality in every classic GTO application.