BBC Truck Header 2in x 3-1/2in Fender Well

The BBC Truck Header 2in x 3-1/2in Fender Well from SCHOENFELD is purpose-built for high-performance big-block Chevy engine swaps and serious truck modifications. This exhaust manifold assembly is engineered to maximize scavenging efficiency and power output while routing exhaust gases away from critical engine bay components. Fabricated for tight fender well clearance, it's the go-to choice for custom truck builders, engine builders, and enthusiasts who demand exhaust flow optimization without frame or suspension modifications.

Constructed from heavy-duty cast iron, the BBC Truck Header features a 2-inch primary tube diameter stepped up to 3.5-inch collector sizing—a proven design that balances back-pressure management with scavenging velocity across the entire RPM band. The fender well configuration uses a shallow-rise design that tucks the collector area tight to the engine block, freeing up critical clearance for steering components, suspension, and accessories. At 40.1 lbs, it's substantial enough to handle heat cycles and vibration while maintaining dimensional stability, with dimensions of 20.25 x 10.5 x 40.5 inches accommodating factory and custom frame rails.

This header is ideal for big-block Chevrolet applications in C10/K10 trucks, street rods, and custom builds where factory manifolds create exhaust blockage or installation conflicts. Installation requires basic mechanical skill and standard hand tools; most setups integrate with stock or aftermarket downpipes using the 3.5-inch collector outlet. Verify your specific BBC engine block version and frame configuration before ordering, as header fitment varies between casting generations and fender well depths.