Carburetor Standard Main Jet - 122-103 4-Door SuperCrew (Crew Cab) with Short

SuperCrew (Crew Cab) with Short Bed (5

7L engine and is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster®

and the fuel has sloshed up the side of the bowl

The APR Ultracharger Throttle Body Upgrade is necessary to take full advantage of the dual pulley configuration

Year Make Model Position Fitment Notes 1961-1963 Buick Special Front Left or Front Right 1963-1964 Chevrolet Bel Air Rear Left or Rear Right 14

Carburetor Standard Main Jet - 122-103 4-Door SuperCrew (Crew Cab) with ShortOverview: These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimeters per minute" and are changeable for tuning purposes. The shape of the entry, exit, and size determines flow. All Holley Main jets are flow tested and then stamped with the correct number. Click on Catalog Product Page for complete listing of jets and sizes. Features: Fits All Holley Model 2010, 2300, 4010, 4011, 4150, 4160 &