From 3000 to 4500 rpm, the increases averaged 5+ ft/lbs. Of torque for more performance where you need it most.
Port exit dimensions: 1.15" x 1.87". Carb pad height: 4.27.
Match with a dependable Edelbrock square-bore carburetor for maximum STREET performance gains. Edelbrock reccommends a 500-650 CFM model. 5.160" x 5.625". Edelbrock recommends a 500-650 CFM carb.