Carburetor - ROCHESTER E4MC/E4ME 4-Bbl: Identification
The Rochester E4MC and E4ME carburetor numbers are stamped vertically on float bowl, near secondary throttle. See Fig 1 . This number must be used for ordering replacement components and performing adjustments. Carburetor identification number must be transferred on new float bowl if float bowl is replaced.
These carburetors are used with a computer system which is indicated by the first letter "E" of identification number. The last letter of identification number indicates type of choke used. Letter "E", indicates a electric choke and letter "C" indicates a hot air type choke.