Rochester 2 Jet Identification

Rochester 2GC Carburetor

Please keep in mind that all technical information given assumes our parts are being used. Parts purchased from other sources may not install, or work in a like manner. How to Find The Carburetor Number? 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. All other numbers found on these carburetors are casting numbers and part numbers that were used on multiple carburetor numbers.

Three Basic Types of Rochester 2 Jet 2G – Manual Choke 2GC – Automatic Choke 2GV – Divorced Choke (choke thermostat is mounted in the intake manifold)

Tri-Power – The center carbs used on 1958 Cadillac, 1958 Chevrolet, 1957 and 1958 Oldsmobile, and 1957 and 1958 Pontiac used front fuel inlets.

2 Jet Identification

1968 & later carburetor number stamped in the side of the float bowl.
NOTE: Numbers stamped in the float bowl on 1967 & earlier carburetor were casting numbers, not carburetor numbers. Rochester 2G, 2GV Carburetor Catalog

2 Jet Carburetor Parts

 

Updated on 12/09/2020

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