82-86 4wd Bb Pick Up

The 82-86 4WD BB Pickup headers from Hedman are purpose-built exhaust manifolds designed specifically for big block gasoline engines in full-size four-wheel-drive trucks from 1982 to 1986. These headers replace restrictive factory cast-iron manifolds, making them an essential upgrade for anyone looking to enhance performance in classic Chevrolet or GMC trucks.

Hedman headers feature a mandrel-bent, primary-tube design that minimizes turbulence and backpressure while maximizing scavenging efficiency. This design is critical for extracting maximum energy from the combustion cycle, ensuring smooth power delivery across the RPM range. The durable steel construction resists kinking during installation and maintains structural integrity under heat and vibration.

Mechanics and enthusiasts restoring 1982–1986 4WD pickups will find these headers most beneficial when paired with a quality exhaust system and intake upgrade, forming a classic performance upgrade trio for carbureted or fuel-injected builds.