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546" Valve Lift
EN7009-122
AF951-04-08
Holden 304-355 V8 Billet EFI Fuel Rails - RedSuit 14mm Full Length Fuel Injectors
Standard Main Jet #90 HO122-90 L77 546" Valve LiftStandard Main Jet #901 4 32" Thread, . 1055" Hole Size (Pair) HO122 90 122 90 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.
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