MOTORCRAFT Model 740 2-Barrel: Description

The Weber Model 740 2-bbl. carburetor is a 2-stage, 2-venturi downdraft unit. Primary and secondary bores are the same size, 1.260" (32 mm). The primary throttle plate is operated directly by the throttle linkage. Secondary throttle plate is connected by linkage to primary plate.

The Model 740 has 4 basic metering systems, including idle and main metering systems, acceleration and power enrichment. Vacuum ports for distributor vacuum advance and EGR system are located in the primary bore area of the carburetor. The Model 740 is equipped with an automatic electric choke.