Intended for short circle track racing sizes of throttle bore, venturi, booster diameter, throttle plate thickness and throttle shaft diameter have not changed. They comply and are fully consistent with the technical gauging now in use. Venturi casting rings are reamed to legal dimensions, for more consistent air flow. Product Features:Gold Dichromate Finish For Corrosion Resistance w/Classic LookCalibrated Specifically For Circle Track UseNo Choke For Unobstructed Airflow30CC Accelerator Pump For Add Fuel Under Initial AccelerationHp Metering Block For Improved Fuel FlowScrew In Air Bleeds For Precision Tuning CapabilitiesWelded Throttle LeverPower Valve Blow-Out Protection100% Wet Flow Tested By Holley TechniciansArrives Ready To Run
