The power enrichment system supplies additional fuel to the main system during heavy load or full power situations. Holley carburetors utilize a vacuum operated power enrichment system and a selection of power valves is available to "time" this system's operation to your specific needs. Each Holley... (more)
GENERAL GUIDELINES FOR ADJUSTING BRASS AND NITROPHYL FLOATS Two methods of float adjustment are provided for with Holley performance carburetors depending on the style of float bowl and needle and seat assembly employed. They are the internal (dry) setting and the external (wet) setting. The... (more)
An exploded view and parts nomenclture of the 4150/4160 model Holley Carbs.... (more)