LS and LT Radiator for 1991-1996 B-Body Impala/Caprice/Roadmaster
Swapping an LS or LT motor into a 1991-1996 B-Body Impala with automatic transmission can overwhelm the factory cooling, and this 1991-1996 Impala Radiator (Auto Trans) is engineered to handle the extra heat load precisely. Its full TIG welded aluminum construction resists corrosion and vibration while the broad core and dense fin pack maintain stable coolant temperature under steady highway runs or aggressive uphill climbs. Each mounting tab and integrated transmission cooler port aligns with GM chassis points so installers can retain the original fan and shroud without extra brackets or trimming.
Precision TIG Welded Aluminum Structure
The core and tanks of this radiator are joined with a precision TIG welded process that fuses each aluminum panel into one seamless assembly. By eliminating separate joints and gaskets, this method virtually removes weak points where leaks or cracks can form under constant thermal cycling. The unified aluminum construction responds rapidly to temperature shifts, allowing coolant to shed excess heat more efficiently than mixed‐metal designs. Under the vibration and movement of an LS or LT swap, the all‐aluminum build resists fatigue and maintains integrity for thousands of miles. The result is a durable heat exchanger you can trust for daily driving or spirited highway passages.
Optimized Core and Fin Design for LS and LT Cooling Loads
Swapping an LS or LT engine into a B-Body platform increases heat output, and this radiator's broad core area and dense fin pack address that challenge head on. The extra surface contact between fins and incoming air accelerates heat dissipation, keeping coolant temperatures stable even during extended climbs or heavy traffic. The layout promotes uniform coolant flow across the block and heads, reducing the risk of localized hotspots that can lead to gasket failure or oil breakdown. By maintaining a consistent thermal envelope under varied driving conditions, this design safeguards engine performance and longevity. It's an essential upgrade for any Impala, Caprice, or Roadmaster equipped with a modern powerplant.
Seamless Fitment with Factory Fan and Shroud
Every mounting tab and integrated transmission cooler port aligns precisely with the original chassis points on 1991-1996 Impala, Caprice, and Roadmaster models. This exact fitment allows you to reuse the factory fan and shroud without cutting brackets or altering wiring harnesses. By preserving the factory airflow pattern, you retain the engineered cooling balance between radiator, fan and engine compartment. Installers benefit from reduced labor hours and simplified plug-in connections, ensuring a clean underhood appearance and trouble-free operation from initial start‐up. The straightforward design makes this radiator a plug-and-play solution for any automatic-transmission swap.
Adaptive Coating Options for Climate Durability
Choose the natural finish of bare aluminum for everyday use or opt for the protective black epoxy coating when driving in corrosive environments. Bare aluminum quickly develops a stable oxide barrier that guards against mild rust and surface wear, while the epoxy adds a dense barrier to resist salt, moisture, and road grime in winter or seaside conditions. Both treatments preserve fin integrity and maintain peak thermal performance by preventing pitting that can block airflow or impede coolant circulation. This flexibility lets you match the radiator's finish to your local climate and driving habits without sacrificing reliability or resale value. Either way, you get long-term resistance to corrosion and consistent cooling capacity.
Count on this radiator to keep coolant at optimal temperature under varied driving conditions and see the same radiator but with fans in our 1991-1996 Impala Radiator (Automatic Transmission) with Fans.