Tri power

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Tri power was an arrangement of three carburetors designed to function together on American car engines of the 1950s and 1960s.[1]

Tri Power was the actual factory name given to this carburetor setup offered as an option by Pontiac. The "Tri" prefix refers to three individual Rochester 2G carburetors, the center one having normal fuel metering and control properties, while the outside two acting as secondaries, or "dumpers", for full throttle application. Tri Power was an extra cost performance option allowing for more air/fuel to be inducted into the engine, as well as being visually attractive. Tri Power as original equipment on classic automobiles often raises their value today. Oldsmobile, Chevrolet, Chrysler},and Ford also offered a three two-barrel option.