SBC Header IMCA 1-5/8in x 3in Collector

The SBC Header IMCA 1-5/8in x 3in Collector from SCHOENFELD is designed for serious bracket racers and engine builders working with Small Block Chevrolet platforms under IMCA competition rules. This header assembly is engineered to deliver the exhaust scavenging efficiency essential for high-RPM drag and short-track racing environments where every horsepower is crucial.

Constructed from durable cast iron, this header provides the thermal stability and vibration damping necessary for managing sustained high-boost or naturally aspirated combustion pressures. The 1-5/8-inch primary tube diameter and 3-inch collector design maximize scavenging pulses while optimizing back-pressure across the RPM range typical of IMCA-legal Small Block engines. The stepped collector design facilitates smooth exhaust gas transition, reducing turbulence and supporting peak efficiency during acceleration.

Ideal for IMCA competitors and small-block Chevy hot rod builders, this header is a perfect choice for those seeking rulebook-compliant exhaust solutions. Its structural integrity and reasonable weight of 28.6 lbs are essential in competitive applications where unsprung mass impacts suspension dynamics and overall vehicle performance.