Carburetor Standard Main Jet - 122-71 intermediate Expect greater horsepower and torque

Expect greater horsepower and torque through the power band with a more direct and responsive feel upon pressing the throttle

6L V8 1955 - 1957 Chevrolet Truck   265/4

7 Core Type Bar and Plate Core Volume (in^3) 900

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

Intermediate Brake Line For 66 Chevy Chevelle Malibu Pontiac Lemans GTO Convertible El Camino Stainless

Carburetor Standard Main Jet - 122-71 intermediate Expect greater horsepower and torqueOverview: 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 &