HDQ CARB COMPONENTS

The Edelbrock #12685 Single Stage 8.5 Hg Power Valve operates by using engine vacuum to control the opening and closing rate. During heavy load or under full power situations, they open to supply additional fuel to the main system to eliminate hesitation and bogging, ensuring the smooth delivery of power without any drivability concerns.

Additional Information

POWER VALVE STANDARD FLOW SINGLE STAGE 8.5in. HG W/GASKET

Part Type

Carburetor Power Valve

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

• Keep Your Performance Carb In Top Running Order

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Product Details

Reference Information

Power Valve, 1-Stage, Standard Flow, 8.5 in. Hg., Demon, Holley, Quick Fuel, Each

Get the power you need without hesitation or bogging down with Edelbrock Power Valves for Holley carburetors. These power valves operate using engine vacuum, opening to allow additional fuel to be supplied to your system under heavy load and in full power situations. Edelbrock Power Valves for Holley carburetors are offered in a variety of flow rates to meet your Holley's needs.