SBC Headers - 67-81 Truck

The HEDMAN SBC Headers for 67-81 Truck are a street-performance header set engineered specifically for small-block Chevy engine swaps in GM full-size trucks and SUVs. This pair delivers improved exhaust scavenging and horsepower gains over factory cast-iron manifolds through optimized primary tube diameter and a 3-inch collector design. Built from heavy-gauge steel with black paint finish, these headers arrive complete with gaskets and mounting hardware, ready for bolt-on installation without additional fabrication or fitment work.

The 1.625-inch primary tubes are sized to balance scavenging efficiency across the small-block Chevy's RPM range, maximizing mid-range torque while supporting higher-RPM power production typical of street and mild performance builds. The 3-inch collector consolidation reduces backpressure while maintaining durability under sustained driving. At 34 pounds total weight, this header set offers a meaningful reduction versus factory manifolds, contributing to improved weight distribution and handling. The included gaskets and fasteners eliminate ordering delays and compatibility guesswork common with header installations.

This header set is purpose-built for truck owners and engine-swap enthusiasts upgrading 1967–1981 full-size GM trucks and SUVs with small-block Chevy engines. Whether pursuing a restomod build, replacing worn-out manifolds, or maximizing streetable performance without turbocharging or forced induction complexity, these headers deliver measurable gains in throttle response and power delivery. The black paint provides corrosion resistance and a professional appearance under the hood while remaining accessible for maintenance and spark-plug access.