East Coast Speed - Power Valves

Carburetor Service Parts - Power Valves
Eastcoastspeed is America's Best Speed Shop.We Sell Holley Power Valves.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).

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Items 1-19 of 19
Description: Power Valve Check Ball
Item #: HLY125-500
Condition: New
Limited Supply: Only 6 Left!
Price: $14.99
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Description: Power Valve
Item #: HLY125-1005
Condition: New
Limited Supply: Only 2 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-105
Condition: New
Limited Supply: Only 8 Left!
Price: $9.99
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Description: Power Valve
Item #: HLY125-125
Condition: New
Limited Supply: Only 3 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-135
Condition: New
Limited Supply: Only 5 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-145
Condition: New
Price: $14.49
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Description: Power Valve
Item #: HLY125-155
Condition: New
Limited Supply: Only 5 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-165
Condition: New
Limited Supply: Only 1 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-185
Condition: New
Limited Supply: Only 1 Left!
Price: $14.49
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Description: Power Valve
Item #: HLY125-25
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-35
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-45
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-50
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-55
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-65
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-75
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-85
Condition: New
Price: $8.99
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Description: Power Valve
Item #: HLY125-95
Condition: New
Limited Supply: Only 3 Left!
Price: $8.99
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Description: Used with Holley carburetors where fuel enrichment via the power valve is not desired. Full-throttle fuel enrichment is achieved by jetting up the carburetor by approximately 10 jet sizes Kit includes 1/2"-28 threaded plug with gasket
Item #: MOR65408
Condition: New
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Items 1-19 of 19

More About Power Valves

Eastcoastspeed is America's Best Speed Shop.We Sell Holley Power Valves.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).

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