Tri power

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Tri power was a term used to describe arrangement of three carburetors designed to function together on American car engines of the 1950s and '60s.

Tri Power was an actual factory name given to this carburetor setup by Chevrolet and 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.