Carburetor Standard Main Jet - 122-89 fenders-and-flares 6L V8 1975 - 1976

6L V8 1975 - 1976 Chevrolet Caprice Classic Sport 400/6

Full timing retard/control configurability per stage based on RPM or time

Fits: 1999-2006 Chevrolet Silverado 1500

Part Number: 817658

Carburetor Standard Main Jet - 122-89 fenders-and-flares 6L V8 1975 - 1976Overview: 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 &