Description
Holley Billet Metering Block is a fully adjustable metering block that comes with a baseline high performance calibration. All restrictions on this block are threaded with a 6×32 bleed that is available in all sizes from .020-.072. There is no provision for vacuum on this metering block. The block will come with .035 IFR and .053 PVCR, the top and bottom emulsion holes will have a blank in them with .028 restrictions in the middle three holes. This Holley billet metering block uses the HP style vent whistle that does not require any drilling to install, it simply pushes in and locks in place.
