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Holley 20-12 - Holley Accelerator Pump Cams

  • Accelerator Pump Cam Kit, Holley, 2300/4150/4160 Carburetors, Kit
  • Application Specific
  • Estimated Ship Date: Today
 
BrandHolley
Manufacturer's Part Number20-12
Part TypeCarburetor Accelerator Pump Cams
Product LineHolley Accelerator Pump Cams
Summit Racing Part NumberHLY-20-12
UPC090127207451
 
Accelerator Pump Cam MaterialPlastic
QuantitySold as a kit.
 

These Holley accelerator pump cams will allow you to "tailor" accelerator pump performance to the engine's actual requirements. They include cams that have a different shape or profile to give different results. Cam "lift" directly affects the accelerator pump stroke, and, therefore, pump capacity. Ramp profile or shape controls the "timing" of the shot. A steeply-rising ramp shape will give a fast, heavy fuel shot right off idle. Conversely, a gently sloping ramp will spread the pump action over a longer period of time.

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