Description
Holley White Accelerator Pump Cam – 4500 Dominator
Optimize off-idle acceleration and deliver a precise fuel shot with the genuine Holley 20-80 white plastic accelerator pump cam.
Precision Fuel Calibration & Throttle Response
Engineered specifically for Holley 4500 Dominator and modular carburettors, the Holley 20-80 white accelerator pump cam provides fine-tuned fuel delivery during initial throttle opening. By altering the cam ramp profile and lift rate, this high-grade plastic pump cam delivers a rapid, immediate fuel surge right off idle without prematurely emptying the accelerator pump reservoir.
Whether you are dialing in a dedicated drag racing setup or fine-tuning track response, swapping accelerator pump cams allows engine builders to eliminate off-idle hesitations and match fuel enrichment directly to engine load requirements.
Key Features
- ☑ White cam profile engineered for rapid initial fuel delivery
- ☑ Prevents off-idle stumble without prematurely emptying pump volume
- ☑ Direct fit for Holley 4500 Dominator series carburettors
- ☑ High-durability molded composite material for consistent lift
- ☑ Essential component for precision trackside carburettor tuning
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 20-80 |
| Carburettor Application | Holley 4500 Dominator Series |
| Cam Colour / Profile | White |
| Material | High-Performance Molded Plastic |
| Mounting Holes | 2 Position Hole Locations |
| Emission Code | 5 (Legal for Racing / Non-Emissions Controlled Use) |
What’s Included in the Box
- 1x Genuine Holley 20-80 White Accelerator Pump Cam
At JP Racing, we supply authentic Holley performance hardware backed by fast UK dispatch and technical customer support. Optimize your carburettor setup with confidence knowing your order is supplied directly from verified UK motorsport specialists.
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