Carburetor Standard Main Jet - 122-71 intermediate and is finished off with

and is finished off with quad 4

6L V8 1955 - 1957 Chevrolet Truck   265/4

The tailpipe then exits in the stock location through the factory exhaust bezels

The American Thunder systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard

Application Chevy-Monte-Carlo 70-72 Chevy

Carburetor Standard Main Jet - 122-71 intermediate and is finished off withOverview: 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 &