power valves

Holley carburetors have a power enrichment system that provides fuel to the main power circuit during heavy loads or under full throttle situations. The vacuum-operated power enrichment system is controlled by a “power valve” that times the operation to your engine’s specific needs. The power valve opens at low vacuum, such as at wide-open throttle,

[portfolio_slideshow id=10444] If you ever have the chance to discuss engine tuning troubles with the legendary Jon Kaase, you’ll rejoice in his simple logic: “Most engine troubles are centered on spark or fuel—if it has the former, it is either getting too much or too little of the latter,” Kaase says. With help from the