SKU: QFT25-85
UPC: 849804011719
MPN: 25-85QFT
The 8.5 Power Valve Assembly from Quick Fuel Technology is a precision fuel system component designed for carbureted high-performance engines that require optimized fuel delivery. This assembly acts as a regulator between atmospheric and manifold vacuum signals, automatically adjusting fuel metering based on engine load and throttle demand.
The 8.5 designation indicates the vacuum breakpoint threshold, activating at 8.5 inches of mercury, making it suitable for naturally aspirated engines with moderate to aggressive cam profiles. The sealed diaphragm design allows for quick responses to manifold vacuum changes, enriching the air-fuel mixture precisely when needed during hard acceleration and wide-open-throttle conditions.
This power valve assembly is ideal for those building street engines, vintage restorations, or competition carburetor setups. Its compact footprint integrates seamlessly into most four-barrel carburetor bodies, ensuring responsive throttle transitions and preventing flat spots during acceleration.
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