Brodix 2061000 Race-Rite cylinder head for Big Block Chevy engines. Assembled with 2.250in intake and 1.880in exhaust valves, 270cc oval port intake runner, and 119cc chamber. Features 1.550in springs for hydraulic roller cams with .600in max lift, made from A-356 aluminum. Designed for 396-502 cubic inch engines, offering out-of-the-box horsepower for pro-street racing. Sold as each.