LS and LT Radiator for 1955-1957 Chevy TriFive 150/210/Bel Air/Delray
When swapping an LS or LT motor into your 1955 through 1957 Chevy TriFive 150, 210, Bel Air or Delray with auto transmission, managing engine temperature is crucial and the 1955-1957 Chevy Radiator (Auto Trans) ensures a bolt in fit. Designed around precision sheet aluminum, it features precision TIG welded aluminum core and tanks that resist leaks and withstand repeated thermal cycles. This unit aligns with original frame mounts and shroud fittings to preserve a factory look and simplify hose routing in every TriFive body style. A corrosion resistant surface and lightweight design help maintain steady coolant flow while reducing front end mass for balanced handling.
Precision Tig Welded Aluminum Structure
The radiator's tanks and core are fused using a specialized tungsten inert gas welding technique that creates a uniform bond across every joint. This process eliminates the need for extra sealants or reinforcement plates by delivering consistently strong seams that resist vibration and thermal stress. As a result, coolant passages remain leak free under the demanding heat cycles produced by LS and LT engines. The precise weld paths also maintain straight coolant channels, preventing flow turbulence and helping to preserve the integrity of the overall assembly without adding unnecessary weight.
Enhanced Heat Transfer with Aluminum Core
At the heart of this cooling solution is a thin walled aluminum core engineered to maximize thermal exchange. Thin coolant passages increase the surface area in contact with fluid, accelerating heat rejection even under sustained load. Aluminum's natural thermal conductivity works in concert with the core design to move heat away from critical engine components, keeping cylinder heads and block temperatures in their ideal range. In addition, the material's resistance to corrosion ensures that efficiency remains high over many years of operation, while the light mass contributes to balanced handling by reducing front end weight.
Corrosion Resistance Coatings and Surface Options
Owners can choose between a classic bare aluminum finish or a durable black epoxy coating, each offering distinct advantages without altering thermal performance. The bare option allows for a polished appearance or custom paint treatments to match restorations or show-car standards. The epoxy version adds a barrier against moisture and road debris, helping to prevent pitting and discoloration over time. Both finishes maintain the radiator's slim profile and weight, so coolant flow characteristics remain unchanged while the unit retains a fresh underhood look in any TriFive build.
Seamless Fitment for TriFive LS and LT Swaps
Designed for 1955 to 1957 Chevy 150, 210, Bel Air and Delray models equipped with automatic transmission, this radiator bolts directly to existing frame mounts and shroud brackets. The exact match to factory attachment points eliminates the need for custom brackets or frame modifications, cutting installation time significantly. Hose connections and fan shroud alignment fall into place without additional adapters, preserving the original engine bay appearance. This precise fit not only simplifies the swap process but also ensures professional results with minimal adjustments after installation.
Enjoy dependable cooling for your LS or LT swap every season. For the same radiator but with fan consider our 1955-1957 Chevy Radiator (Manual Transmission) with Fan.