Designed for absolute flow and fuel delivery, Speedmaster™ center bodies will help you leave the competition in the dust. Gain 25-35hp with this direct replacement, 100% new high performance carb main bodies. Easy swap in, swap out installation utilizing existing metering blocks, fuel bowls and base plates. Flows 850 cfm, adjustable screw in air bleeds, down leg boosters. Get maximum air with no air horn choke tower , or choke control in the way.