78-87 Buick V6 Regal

The 78-87 Buick V6 Regal headers from HEDMAN are engineered specifically for enthusiasts seeking meaningful performance gains from the GM 3.8L or smaller V6 engines found in second-generation Regals. These headers address a critical bottleneck in stock exhaust manifolds—restrictive port design and unequal runner lengths—by providing tuned primary tubes that improve scavenging and reduce exhaust backpressure. Whether you're building a weekend cruiser or restoring a classic muscle-era sedan, upgrading from cast iron manifolds to quality headers is one of the highest-ROI modifications available for naturally aspirated V6 platforms.

HEDMAN headers feature mandrel-bent steel tube construction with stepped primary runners—typically 1.5" to 1.625" diameter—designed to match GM V6 cylinder head ports and optimize exhaust velocity across the RPM band. The stepped design prevents turbulence and reversion, allowing cylinders to empty more efficiently while maintaining velocity in smaller-displacement engines where low-end torque preservation matters. This 19.7 lb assembly measures 13.6" x 8.5" x 22.3", making it compact enough for tight engine bay clearance while still providing adequate collector sizing for proper back-pressure characteristics. Ceramic or metallic coating options resist thermal stress and corrosion, critical for longevity in 1980s-era Buick applications where underbody protection is often compromised.

Installation on 1978–1987 Buick V6 Regals typically requires removal of the stock manifolds and compatibility verification with your specific cooling system routing and steering box clearance—common tight spots in second-gen F-body platforms. Proper gasket sealing and mild exhaust wrap on the collector area will minimize underhood heat and improve bay temperature management. Pair these headers with a quality cat-back exhaust system and tuned intake for cumulative efficiency gains. Most mechanics report 8–12 horsepower improvements at the wheels on stock V6 Regals, with noticeable mid-range torque response and a more aggressive engine note.