Standard Main Jet #64 HO122-64 Wheel Accessories combustion chamber volumes of 58cc

combustion chamber volumes of 58cc or 72cc

Phantom Series Blower Pressure Gauge 5802 AU5802 2-5/8"

Bang Shift Globe Holder & BracketSuit Bullet Ratchet Shifter

1/2" Crankshaft SocketSuit Small Block Chevy

Standard Main Jet #64 HO122-64 Wheel Accessories combustion chamber volumes of 58ccStandard Main Jet #641 4 32" Thread, . 064" Hole Size (Pair) HO122 64 122 64 These metering orifices control fuel flow into the metering system. They are rated in flow capacity "cubic centimetres 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.