Assault Racing Products PC2031 Small Block Chevy Single Plane High Rise Satin Aluminum Intake 3000-7500+ RPM SBC RPM Range: 3000 - 7500+ Single Plane High Rise Manifold Height: 6.06 in Square bore carb bolt pattern for the Holley 4150/4160 style carburetor Unique removable water flow divider to eliminate the thermostat in racing applications