Carburetor Standard Main Jet - 122-51 calipers-and-parts Tuned-length primary tubes for better

Tuned-length primary tubes for better exhaust pulse scavenging and performance

Designed for LT Engine Swap Installations in Classic Car and Truck Chassis Requiring More Oil Pan to Chassis Clearance Around the Front Half of the Oil Pan

1986-1988 Dodge W100 360 CID

2011-2019 GMC Sierra 3500 HD 364 CID

5 Primary Pump Nozzle Size 28 Product Type 4150 Model Carburetor Secondaries Mechanical Secondary Main Jet 84 Secondary Pump Nozzle Size 31 Supercharged Application No Throttle Bore 1

Carburetor Standard Main Jet - 122-51 calipers-and-parts Tuned-length primary tubes for betterOverview: 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 &