2-Barrel 500 CFM Circle Racing Track Carburetor Zinc E428003

• Side Inlet 
• Zinc Finish 
• 5.160'' x 3.460'' 4 bolt spacing 
• Choke delete
• Choke horn remains
• 50cc accelerator pump
• 1 timed (spark) port, 1 full vacuum, & 1 PCV port
• The mandated carbs for many oval track racing sanctioning bodies
• Calibrated specifically for circle track use