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435034805700
55" Valve spring maximum lift:
and their redesigned valve body improves hot starting
which will cause transmission andor converter failure
SB Ford 1-3/4" Rectange Port Header FlangesSuit Ford 289-351 Windsor with Brodix Heads
Standard Main Jet #66 HO122-66 Product:1/4-32" Thread, .066" Hole Size (Pair) 435034805700Standard Main Jet #661 4 32" Thread, . 066" Hole Size (Pair) HO122 66 122 66 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.
