15.5 Inch Tall Radiator with Fans for LS and LT Swap in 1964-1967 Pontiac GTO
The 1964 to 1967 GTO Radiator 15.5" Tall (Manual Trans) with Fans brings targeted cooling to LS and LT conversions in the 1964 to 1967 Pontiac GTO A Body. By matching the factory 15.5 inch core height and bracket layout, it installs without trimming or fabricating mounts. Constructed of aluminum with bare or black epoxy finish, this assembly ships with two performance fans preinstalled to maintain stable coolant temperatures in traffic. Its hose connections align with factory routing to preserve chassis clearance and ensure dependable operation. drop-in installation speeds the swap process and ensures reliable heat rejection.
Application And Core Specification
The 1964 through 1967 GTO Radiator 15.5 Inch Tall for manual transmission applications is a direct swap for the factory core height without any modification to support brackets or shroud panels. By matching the original 15.5 Inch vertical dimension, it maintains the precise hood clearance and preserves the original coolant path design that automotive engineers intended for thermal efficiency. This ensures coolant flows evenly through the upper and lower tank chambers, stabilizing engine temperature under both light cruising and heavy load conditions. Retaining the stock filler location also simplifies pressure cap integration, preventing the need for custom hoses or adapters. In addition, preserving the core height maintains the original coolant volume, which supports consistent heat soak performance during extended highway runs.
Construction And Build Quality
Every unit is fabricated from premium grade aluminum selected for its strength and conductive properties. The core tubes and fin stacks undergo a rigorous brazing process to create robust joints that resist leaks during repeated thermal cycles. Hand lined tank seams are tested under high pressure to ensure structural integrity, and the end plates are formed to precise tolerances for a uniform seal. Aluminum resists corrosion in hard water conditions better than standard alloys, extending service life and reducing maintenance intervals. Assembled entirely in the USA, each radiator meets stringent dimensional standards and undergoes a final inspection to confirm fin density and tube alignment.
Cooling Capacity And Fan System
The integrated shroud hosts two powerful fans that arrive factory installed and calibrated for optimized air flow. This arrangement eliminates the need for aftermarket kits and preserves proper clearance to the fin pack. Each fan is supplied with a plug and play wiring harness, a weather resistant relay and inline fuse, ensuring quick connection to the vehicle's electrical system. In urban stop and go conditions the dual fan layout offers superior air displacement, while at highway speeds it reduces blower noise and load on the alternator. This balanced approach minimizes coolant temperature spikes and delivers sustained cooling performance.
Compatibility With MuscleRods Mounts
Designed to complement MuscleRods engine mounting solutions, this radiator aligns precisely with the framework used in performance chassis builds. MuscleRods mounts adhere to factory datum points, guaranteeing accurate engine height and driveshaft angles for optimal powertrain efficiency. The radiator's tank end plates and mounting lugs mirror those dimensions, allowing direct bolting without the need for spacers or fabrication. This synergy simplifies full chassis assemblies, accelerates project timelines and ensures repeatable precision in both restoration and custom street builds.
For the same radiator but without fans, consider our 1964-1967 GTO Radiator 15.5" tall (Manual Transmission) Without Fans.