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Carburetor, Model 4160 Stage 2, 750 cfm, 4-Barrel, Square Bore, Vacuum, Single Inlet, Dichromate, Each

JET Model 4160 Stage 2 carburetors are based on the popular Model 4160 Holley 4 barrel carburetors. They begin life with the disassembly and inspection of the main body for proper sizing of the idle, transition, acceleration, and main metering circuits. The body and metering blocks are checked for straightness, boosters are aligned in the venturi, and the throttle bores are aligned for proper seating. Next, the fuel metering circuits are inspected, blueprinted, and then calibrated to match modifications done to the engine. The air horn is milled to improve and equalize airflow between the primaries and secondaries, and a quick-change cover kit allows changes in the secondary opening rate in mere seconds. Last but not least, a new secondary metering block allows the secondary jetting to be adjusted.