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fuel inlets
Fully plumbed and wired custom flat head engine
2017 Mazda 3 2
The exceptional flow characteristics and 23° valve angle make this the perfect head for 350 to 434 cid engines in drag cars
Tailor Accelerator Pump Performance Each Cam Is Different Shape/Profile Gives Different Results
Standard Main Jet #53 HO122-53 Product:1/4-32" Thread, .052" Hole Size (Pair) fuel inletsStandard Main Jet #531 4 32" Thread, . 052" Hole Size (Pair) HO122 53 122 53 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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