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Holley Power Valve Gaskets Full Round Style

Holley 1008-1597

510-1008-1597

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Holley Power Valve Gaskets Full Round Style $9.51
Power Valve Gaskets
  • Full Round Style
  • 10/pkg

  • Holley 1008-1597 Details

    Power Valve Gaskets

    Not for Two Stage Power Valves.

    Specifications:

    Carburetor Type
    Holley 2bbl
    Quantity
    Sold as a set of 10
    Gasket Material
    Paper
    Manufacturer's Part Number:
    1008-1597

    What does a power valve do? The power valve allows the carburetor to function much leaner for part-throttle fuel economy but once the throttle is in a wide-open position, vacuum in the manifold drops to almost zero and the power valve enriches the fuel mixture. When the engine is returned to basic part-throttle operation and vacuum rises, the power valve closes up, leaning out the mixture. The power valve is important because of its effect on everyday, around-town drivability.

    The rule of thumb for power valve size selection is to divide your highest part throttle manifold vacuum reading by two and select the closest size smaller. Example: 8" Hg of manifold vacuum would use a 3.5" Hg power valve. Holley power valves include gaskets (thread size: 1/2-28).

    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations