LS and LT Swap Radiator for 1959-1964 Chevy Impala B-Body
When installing a modern LS or LT powerplant behind an automatic transmission in a classic Impala, managing added heat takes priority. The 1959-1964 Impala Radiator (Auto Trans) employs a full aluminum core and tanks secured with TIG seams to deliver dependable heat rejection and resist corrosion under sustained loads. It drops into factory support points on the classic frame and connects directly to original transmission cooler lines, avoiding the need for custom brackets or line adapters. Builders can then focus on wiring and plumbing rather than metal work while maintaining consistent coolant flow across varied driving conditions.
Precision TIG Weld Construction
The radiator employs a TIG weld process for every joint between its aluminum tanks and core to guarantee consistent seam integrity. This form of welding uses a tungsten electrode and inert shielding gas to produce clean fusion that resists leaks under extreme vibration or thermal cycling in LS or LT engine swaps. Uniform penetration at each weld eliminates weak zones that can lead to stress concentrations or crack initiation during aggressive driving or towing. Operators benefit from minimal post weld finishing since TIG welds create neat beads that require less grinding or touch up. The result is a robust assembly that stands up to high coolant pressure and repeated heat load without degradation. Manufactured in the USA, this radiator meets stringent quality standards that ensure each tube and joint performs reliably from daily commutes to track use.
Efficient Aluminum Core Design
At the heart of the design lies a full aluminum core chosen for its superior thermal conductivity and reduced mass relative to traditional copper units. Heat absorbed by the coolant moves rapidly through the thin walled tubes into the densely packed fin matrix, maximizing surface contact with incoming air. This tube and fin arrangement prevents the formation of hot spots even when the Impala is driven at sustained high output. A balanced core density also maintains proper coolant velocity to optimize heat transfer without inducing excessive back pressure on the water pump. Because aluminum sheds heat faster than heavier metals, engine operating temperatures remain within safe ranges, protecting internal components and preventing power loss. The low weight of this core contributes to improved front end dynamics, enhancing handling and responsiveness while reducing overall vehicle mass.
Durable Finish in Bare Aluminum or Black Epoxy
Owners may select either a classic bare aluminum finish or a durable black epoxy coating to suit both protective and aesthetic needs. The raw metal option shows off clean weld lines and polished surfaces for a period correct look that ties in with other engine bay hardware. Alternatively, the black epoxy provides a tough barrier against corrosion, road debris, and chemical exposure, extending service life in harsh environments. Each coating is oven cured at precise temperatures to ensure strong adhesion and long term retention, resisting peeling or chipping over time. Both finishes preserve the radiator core's cooling efficiency with minimal impact on thermal performance, so styling choices need not come at the expense of function. Selecting the right surface treatment lets builders customize the engine compartment appearance while maintaining reliable coolant management.
Plug and Play Fit for Classic Impala Frame
Designed as a straight in fit for 1959 to 1964 Impala B body frames, this radiator aligns directly with factory support points for a hassle free install. Its inlet and outlet ports match original locations and accept standard transmission cooler lines without the need for adapters or custom tubing. This plug and play geometry eliminates common fitment headaches, reducing project time and keeping budgets on track. By retaining the stock mounting system, builders avoid cutting or welding to the core support, preserving chassis integrity and resale value. Simplified attachment lets technicians focus on wiring harnesses and plumbing routing rather than metal fabrication. Whether restoring a daily driver or building a show car, this direct fit design ensures consistent coolant flow and dependable performance from cold start to full throttle.
Count on dependable installation and consistent cooling performance. For the same radiator but with fans see our 1959-1964 Impala Radiator (Automatic Transmission) with Fans.