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Holley Accelerator Pump Cams

4.41 out of 5 stars 32 Customer Reviews

Holley accelerator pump cams will allow you to "tailor" accelerator pump performance to your 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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Holley Accelerator Pump Cams 20-12

Accelerator Pumps, Cam Assortment, Plastic, Black, Pink, White, Red, Green, Orange, Blue, Brown, Yellow, Screw, for Model 2300, 4150, 4160, Kit

Part Number: HLY-20-12

4.41 out of 5 stars ( 32 )

Estimated Ship Date: Monday 11/24/2025

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Estimated Ship Date: Monday 11/24/2025

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