The Proform Race Series Carb includes:

Proform Carburetor Main Body

• High-Flow Main Body
• Dyno-Proven Horsepower & Torque Gain
• Adjustable, Screw-In Air Bleeds
• High-Performance Down-Leg Boosters (except 650 CFM)
• Maximum Air Flow. No Air Horn, Choke Tower, or Choke Control
• High-Rate Air-Flow Section Design
  
  Proform Billet Throttle Base Plates
• Adjustable Secondary Air Flow Cam Bracket
• Solid Billet Construction
• Hand-assembled in the U.S.
• Timed & Full Vacuum Tubes for Accessories & Tuning
• Welded Throttle Shaft
• Button Torx Head Throttle Plate Screws
• Power Valve Blow Out Protection
• Slip Link Mechanical Secondary Linkage
  
  Proform Billet Metering Blocks
• Solid Billet Construction
• Durable, No Warping or Porosity Problems
• Changeable Idle Feed Restriction
  
  Special Circle Track Modifications
• Molded wedge floats to keep the fuel flowing in turns
• A power valve in the secondary side of the carburetor for smooth transitions
• PTFE bearing ribbons around the throttle shafts for smooth operation; and changeable operating links to control secondary opening rates