Carburetor Identification

The BOSS 302 carburetor is a Holley Model 4150-C 4-V. It flows 780 cubic feet per minute (CFM) and is one of the largest flowing carburetors Ford ever put into production. The 1969 Ford part number is C9ZF-9510-J. The 1970 part number is D0ZF-9510-Z.

The 1969 carburetor came with a vented front bowl which had a rubber cap on an arm that closed as the carburetor came off the idle position.

In the photo immediately below of this 1970 carburetor you can see the Ford part number. The second line is the Holley list number (1969=4511,1970=4653). The third line is the date of manufacture (Year, month, week).

Note the bowl attaching screws have slotted heads. Later replacement carburetors may have hex head screws.

This page last updated: February 3, 2022. All Rights Reserved.