1972 F100 4x4 manual 360 V8. Features: 2 Barrel, 500 CFM, 50cc Accelerator Pump, Manual Choke. - Carburetor Structure: The components of a carburetor usually include a liquid fuel storage chamber, a choke, an idling (or slow-running) spout, a main spout, a venturi-shaped air-flow restriction, and an accelerator pump.