How do I identify my Rochester 2 barrel carburetor?
All Rochester carburetors are identified by a seven- or eight-digit part number. The earliest units, made before mid-1968, had a triangular metal tag attached to the fuel bowl. The seven-digit part number is listed on the tag. You occasionally find original carburetors with an anodized tag of various colors.
How do I identify a Rochester 1 barrel carburetor?
Rochester used a tag attached to one of the float bowl screws. Some of the B type carburetors also had the number stamped on the face of the base (flange). Some Rochester B carburetor were produced without tags. On these carburetors the last 4 digits were stamped on the bottom of the throttle body.
How many CFM is a Rochester 2G?
The cfm (cubic feet per minute-a measure of how much air the carburetor can flow) on the Rochester 2G ranges from about 225 cfm in the smallest applications up to what Rochester calls a 435 cfm.
Where is the number on a Rochester 2G carburetor?
The older Rochester 2G carburetors had a small triangular tag attached to the top of the carburetor. Starting in 1968 the 2G carburetor had the number stamped on the side of the float bowl below the inlet. Pre 1968 2G carburtors cannot be identified without the tag.
What are the throttle bores on a Rochester two barrel carburetor?
There are two different size throttle bores on Rochester two-barrel carburetors, one is 1 1/4 and the other is 1 1/2 inches. All two-barrel carburetors had a cfm range of 285 to 450 cfm, and the original 2G used a manifold-mounted thermal-spring assembly that connected to the choke via a linkage rod.
Where are the identification numbers on a Rochester Quadrajet?
Identification codes indicate the car or truck a carburetor was designed for and what transmission it was used with. ID numbers for a Rochester Quadrajet carburetor are found next to the throttle level.
When did Rochester start making Quadrajet carburetors?
Quadrajet carburetors built by Rochester through 1974, have numbers starting with 70, and beginning in the 1975 model year they have numbers starting with 170. If you’re looking for more information about Quadrajet carburetors, check here.