BHolley 0-80592S 600 CFM Four Barrel Supercharger Manuel Choke Carburetor ReviewbP PP Holley 0-80592S 600 CFM Four Barrel Supercharger Manuel Choke Carburetor PWet-flow tested and calibrated for best possible performancePMechanical progressive linkage for durabilityPPower valve eliminates the need to block off valve to raise jettingPShiny finish to give a show quality lookP