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Carter Carburetor CFM - Venturi Bore Diameters
CFM
Venturi Diameter
Bore Diameter
primary
secondary
primary
secondary
400
1 1/8
1 1/4
1 7/16
1 7/16
500
1 3/16
1 1/4
1 7/16
1 11/16
575
1 1/4
1 9/16
1 9/16
1 11/16
625
1 3/16
1 9/16
1 7/16
1 11/16
750
1 7/16
1 9/16
1 11/16
1 11/16
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