Engine Carburetor Race Series Model 850 CFM Mechanical Secondaries ProformFinally an affordable high performance race carburetor! PROFORMs new Race Series Carburetor is hand assembled in the U. S. utilizing the PROFORM High Flow Carburetor Main Body, durable billet metering blocks, and a high performance billet throttle baseplate. The PROFORM Race Series Carb includes: PROFORM Carburetor Main Body, High Flow Aluminum Main Body, Dyno Proven Horsepower and Torque Gain, Adjustable, Screw In Air Bleeds, Maximum Air Flow with No