If the Quadrajet you’re looking at has a seven-digit part number ranging from 702 through 704, these were built before 1976. On these units, the number immediately following these three digits, will designate the actual year of production. After that, you will find either a 2, or a 5. The number 5 designates an emission carburetor from California.
For more information and pictures on where to locate your carburetor part number, please go to this website.
For more information and pictures on where to locate your carburetor part number, please go to this website.