Carter Carburetor CFM Identification for Buicks

"Buick Trademark(s) used with the written permission of General Motors"

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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

Specifications and Parts list for Buick Carter Carburetors