600 CFM 4-Barrel Aluminium Street CarburettorVacuum Secondary. Electric Choke, 4160 SeriesBrand: HOLLEYPart Number: HO0-80458SADescription: Holley's new all-aluminium carburettor has all of the same great features as the classic Holley carburettor with the exception of having dual inlet v-bowls. Designed for the customer with a mildly built engine and a desire for a racy dual inlet look, but who only needs a 600 CFM carburettor. Vacuum secondaries allow use on wide variety of vehicles Electric choke for easy warm upSingle feed fuel inletCalibrated for excellent street performance Ford A/T kickdown, does not work with A.O.D. transmissions1 timed (spark) port, 1 full vacuum, and 1 PCV portPerformance upgrade for stock to mildly modified vehicles Universal calibration for easy bolt-on performance Clear fuel level sight glasses