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Acclerator Pump Cam Assortment

Holley accelerator pump cam assortment for Holley carburetors by Holley 20-12. Another great tuning kit from Holley! This one will allow you to tailor accelerator pump performance to the engine's actual requirements. Each cam has 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 fuel 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. Sold as one accelerator pump kit.

Holley accelerator pump cam assortment Holley 20-12 20-12$32.97
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