Proform , PROFORM Black Race Series 650 CFM Carburetor, Premium Black Proform 67201 ALC Race Series 850 CFM Carburetor Proform 67201 ALC Race Series 850 CFM Carburetor Proform Race Carbs Carburetor Main Body For Use With Holley 750 CFM Vacuum Secondary Mode. Finally 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 Air Horn, Choke Tower, or Choke Control. High Rate Air Flow Section Design. Uses standard service and tuning components, PROFORM Billet Throttle Base Plates, and Adjustable Secondary Air Flow Cam Bracket! Solid Billet Construction. Timed and Full Vacuum Tubes for Accessories and Tuning, Button Torx Head Throttle Plate Screws, Power Valve Blow Out Protection, Slip Link Mechanical Secondary Linkage, Serviceable Throttle Levers, PROFORM Billet Metering Blocks, and Solid Billet Construction! Durable, No Warping or Porosity Problems. Changeable Idle Feed Restriction. PROFORM Aluminum Fuel Bowls with Sight Glass Windows for easy float adjustment. Manufactured in the U. S. A. Sold individually. Product Details: Engine Carburetor Race Series Model 650 CFM Dual Inlet 4 Barrel With Vacuum Secondaries Square Type Bore Mount Features Billet Aluminum Plates and A Dichromate Finish No Choke Assembled With 100 percent New Components Sold As Each