How do I identify a GM carburetor?

The number 5 designates an emission carburetor from California. The digit following the number 2 (or 5), will indicate the type of GM car it was originally installed. A 4 would mean it is for a Buick, a 5 would mean Oldsmobile, and Pontiac carburetors usually have a 6 or 7.

How do I identify a Ford carburetor?

To identify your carb you need the Ford tag number which is stamped into a triangular shaped aluminum tag under one of the fuel bowl screws. The numbers on that tag are the carb identification number, the design code and the production date code.

Where are the numbers on a Quadrajet carburetor?

There are a couple of locations containing the codes needed to identify your Quadrajet; both are located on the driver side of the carb body. Early Q-jets used a circular tag stamped with the codes found in a cavity in the side of the float bowl, while later carburetors used a stamping on the body of the carb.

How do I identify my Quadrajet carb?

All Rochester carburetors, including the Quadrajet, are identified by a 7-digit or 8-digit part number; the earliest units, made before mid-1968, had a round metal tag attached to the fuel bowl. The 7-digit part number ran around the outside edge of the tag.

What carburetors did Ford use?

Autolite 4300 carburetors came originally on these vehicles: Ford trucks, Lincoln cars, Jeep and AMC continued to use Autolite four-barrels with a third generation carburetor referred to as the model 4350.

What is a 4 bbl carburetor?

A four-barrel carburetor has two primary and two secondary barrels. At idle and low-rpm driving, only the primary barrels open. The throttle blades on the secondary barrels stay closed. As rpm increases, the engine requires more air and fuel to make power, and this is when the secondary barrels kick in.

Is a 650 CFM carb to big for a 350?

600 or 650 would work. The quadrajets that come on stock 350’s are 750’s. I’ve experimented on sbc boat motors and went from 500-850 the smaller carb will accelerate out of the hole faster than a larger carb. The larger carb will give you more top end.