Performance Radiator with Shroud for Buick Regal (1973-1977) 3.8L 5.7L

High-Efficiency Aluminum Radiator and Shroud Kit for 1973-1977 Buick Regal

What it Does: The Performance Radiator with Shroud directly replaces the deteriorating factory cooling unit on the 1973-1977 Buick Regal to maximize heat dissipation, eliminate thermal runaway, and sustain optimal coolant temperatures under heavy loads.

The Stock Buick Regal Colonnade Cooling Breakdown

Factory radiators installed in GM A-body platforms relied on copper-brass cores sealed with lead solder or early-generation multi-piece composite designs. Decades of service expose these vintage systems to severe internal corrosion, calcium buildup, and fin degradation, reducing heat rejection capacity. Combined with the restrictive mechanical clutch fans driven off the Buick 231 V6 and Buick 350 V8, the original setup suffers from localized heat soak and poor low-speed static airflow, causing engine temperatures to spike during hot idling and stop-and-go cruising.

The Engineering Solution

Engineered to resolve vintage thermal bottlenecks, this complete cooling module features an aircraft-grade all-aluminum core configured with high-density tubes and multi-louvered cooling fins. Robust, TIG-welded aluminum end tanks eliminate the failure-prone crimped or soldered joints typical of aged stock units. The included precision-formed aluminum fan shroud directs airflow evenly across the entire core surface area, while integrated high-output electric fans generate continuous static pressure regardless of engine RPM. By switching from a parasitic mechanical fan to an electric shroud assembly, the system stabilizes operating temperatures and reduces rotating drag on the engine assembly.

Technical Specifications

Compatibility

• 1973 Buick Regal (3.8L V6, 5.7L V8)
• 1974 Buick Regal (3.8L V6, 5.7L V8)
• 1975 Buick Regal (3.8L V6, 5.7L V8)
• 1976 Buick Regal (3.8L V6, 5.7L V8)
• 1977 Buick Regal (3.8L V6, 5.7L V8)

Frequently Asked Questions

Does this fit the GM A-body Regal?
Yes, this is a direct fit for the 1973-1977 Buick Regal equipped with the Buick 231 or Buick 350 engine.

Can the factory transmission cooler lines be connected directly to this radiator?
Yes, the integrated automatic transmission fluid cooler matches standard inverted flare fittings for seamless integration with OEM cooling circuits.

The Buick Muscle Caliber

Second-generation Regal classics demand dependable cooling performance that preserves big displacement power and historic drivability. This all-aluminum radiator conversion delivers the thermal efficiency needed to protect classic American iron against punishing heat on the street and open highway.