LS Swap Radiator for 1973-1976 Chevy Corvette 26 Inch Wide Core
When fitting an LS engine into a 1973-1976 Chevy Corvette with automatic transmission, cooling demands jump dramatically under sustained load. Built around a 26 inch wide core and constructed from high quality aluminum, this radiator increases coolant volume while shedding heat rapidly to prevent hotspots in traffic or on the highway. Installation remains straightforward thanks to exact factory mounting points for the Y body Corvette and no modifications are required to stock brackets.
Broad 26 Inch Core Design Ensuring Stable Temperatures
The expansive 26 inch core significantly boosts coolant volume and opens up a wider path for airflow, allowing heat to dissipate more evenly across the fin pack. This design helps eliminate hot spots that commonly develop in stop-and-go traffic or during long highway stretches. By maximizing the surface area exposed to oncoming air, the radiator maintains consistent engine temperatures under sustained load. Drivers will notice reduced temperature spikes when climbing hills or idling, ensuring reliable performance in any driving scenario.
Aluminum Construction for Rapid Heat Transfer and Weight Savings
Crafted entirely from high quality aluminum, the radiator offers an excellent strength-to-weight ratio that reduces mass at the front end without sacrificing durability. Aluminum's natural thermal conductivity accelerates heat escape from the coolant, allowing it to shed engine heat faster than traditional materials. The combination of lightweight construction and efficient heat transfer contributes to improved throttle response and handling balance. This material choice also resists warping and fatigue under repeated thermal cycling.
Strategic Coating Options for Corrosion Protection and Aesthetic Appeal
Choose between a classic bare surface for maximum thermal performance or a black epoxy finish that adds a robust barrier against moisture and road salt. The epoxy layer protects critical areas from pitting and oxidation while also providing a sleek, uniform appearance under the hood. This dual-option approach allows enthusiasts to prioritize either peak cooling efficiency or enhanced longevity in harsh climates. Regardless of finish, each radiator is engineered to withstand daily street use and occasional track duty.
Made in the USA Craftsmanship and Precise Fitment
Manufactured domestically to exact Y-body Corvette specifications, this radiator aligns perfectly with the original 1973–1976 automatic transmission mounting points. No drilling, trimming, or bracket modifications are required, streamlining the installation process for both professional shops and DIY enthusiasts. Tight tolerances and rigorous quality checks ensure each unit delivers a secure fit and leak-free operation. This attention to detail not only simplifies installation but also preserves vehicle value by maintaining stock-correct appearance and performance.
This radiator provides precise fit and dependable cooling. For the same radiator but with fans see our 1973-1976 Corvette Radiator 26" Wide Core (Automatic Transmission) with Fans.