Brodix 2020001 BB-2 Plus cylinder head for Big Block Chevy engines. Bare casting with 2.250in intake and 1.880in exhaust valves, 312cc intake runner, and 119cc chamber. Features angle plugs and A-356 aluminum construction. Designed for high-performance racing, offering increased airflow and horsepower. Requires valve job, porting, and valve train components. Sold as each.