Holley 125-135 Carburetor Power Valve
by Holley
Sale
$56.27
$43.76
With Single Stage A Power Valve Provides Further Enrichment To The Main Metering System Under Load And Low Vacuum Conditions Without External Referencing The Power Valve Would Be Reading The Supercharger Boost Pressure Which Has No Bearing On The Engine Load Include Gasket Limited 90 Day Warranty
Specifications
Compatibility - Holley Carburetors
Flow Type - Single Stage High Flow
Pressure - 3-1/2 Inch Of Mercury
Includes Gasket - Yes
Holley Carburetors that are intended for use with superchargers have a unique capability that allows their power valves to reference the intake manifold vacuum below the supercharger. This allows the power valve to operates it should based off intake manifold vacuum. A power valve provides further enrichment to the main metering system under load and low vacuum conditions. Without this external referencing the power valve would be reading the supercharger boost pressure which has no bearing on the engine load
