SBC IMCA Headers 1-5/8

The SBC IMCA Headers 1-5/8 by SCHOENFELD are a specialized exhaust solution tailored for small-block Chevrolet engines, particularly suited for IMCA racing and high-performance street applications. These headers are designed for drivers who prioritize maximum scavenging efficiency and responsive throttle characteristics, ensuring durability and ease of installation.

Engineered with a 1-5/8-inch primary tube diameter, these headers optimize exhaust gas velocity and scavenging across a wide RPM range, which is essential for maintaining predictable power curves in IMCA-class engines. The design effectively balances mid-range torque with high-RPM efficiency, making them ideal for naturally aspirated small-block Chevrolet engines typically used in competitive racing.

IMCA racers, weekend bracket warriors, and small-block Chevrolet enthusiasts will find significant performance benefits from this header design, especially those utilizing carbureted or naturally aspirated configurations. The proven tube design and collector geometry help eliminate reversion, promoting cleaner exhaust evacuation and improved horsepower at the wheels.