Quadrajet identification Learn how to identify a Quadrajet carburetor by its stamped numbers, plant codes and date codes. These carburetors do not follow the identification numbers of previous years; they will start with either 1705 or 1708. Apr 20, 2023 · Rochester Quadrajet carburetor vs. Find out the year, application, emissions and division of each Quadrajet model from 1966 to 1980s. 4 - Buick 5 - Olds 6,7 - Pontiac: 7028219 - Transmission most cases Even numbers - Automatic May 14, 2010 · Tag showing Quadrajet ID on an early Quadrajet In and after about 1968 , stamped numbers were used for identification. Most 1967-down Rochester carbs have a triangular aluminum or brass tag retained by a screw attached to the top of the float bowl. The large flat area on the main body just above the secondary throttle shaft has a series of numbers stamped into the casting. other carburetors. Compared to other carburetors, it offers better fuel economy, low and mid-range performance, and airflow. Identification codes indicate the car or truck a carburetor was designed for and what transmission it was used with. If your carburetor reads 1708, it was built in the ’80s. 0, 1, and 2 all indicate Chevrolet. 1965 to 1967 Quadrajets had a round 'bottle cap' tag on the front driver's side. There should be a metal disc affixed to the carburetor for those in the 1965 to 1968 range, and the number was Rochester carburetor numbers are stamped into the float bowl of the carburetor starting in 1968. ID numbers for a Rochester Quadrajet carburetor are found next to the throttle level. The number 1705 identifies the unit as being built between 1976 and 1979. . However, it can be more challenging to tune and may not be suitable for high-performance engines. Apr 28, 2016 · Quadrajet carburetors built after 1976, use an eight-digit casting number. Before that, they are found on a tag. 2 - Quadrajet (4 bbl) Federal standards 3 - Monojet (1 bbl) California standards 4 - Two jet (2 bbl) California standards 5 - Quadrajet (4 bbl) California standards 6 - VariJet (2 bbl) Fed: 7028219 - Division. The Rochester Quadrajet carburetor is known for its unique design and superior performance.