These power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel is supplied to the main system during heavy load or under full power situations to eliminate hesitation and bogging--ensuring the smooth delivery of power without any drivability concerns.Gasket sold separately p/n: 1032030
Contact our Tech Support Line for further information at 928-855-6341.
www.LCEngineering.com for New Products, Tech Articles,Specials & Monthly Newsletters!