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Edelbrock S/B Hi-Flow Fuel Pump

Edelbrock S/B Hi-Flow Fuel Pump
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Frequently Asked Questions

A mechanical pump can be a practical choice when the engine is designed to drive one and the pump can supply the required pressure and flow for the application. It avoids separate pump wiring, but it is not suitable for every engine or high-pressure EFI system. Match the pump to the engine mounting provision and fuel-demand requirements.

You need a regulator when the pump and fuel system design require one to maintain the correct operating pressure. Some pump systems have regulation built in, while others use a separate return-style or deadhead regulator. Check the pump instructions and the pressure requirements of the carburetor or EFI system before adding or omitting a regulator.

Yes. Excessive pressure can overwhelm a carburetor needle and seat or push an EFI system outside the pressure range its regulator and injectors are designed to use. More pressure is not automatically better. Use a pump and regulator combination that maintains the pressure required by the complete fuel system.

Use the pressure range specified by the carburetor, fuel-injection system, or engine manufacturer. Carbureted systems generally operate at much lower pressure than EFI systems, so a pump that provides the wrong pressure range can create drivability or fuel-control problems. Select the pump and regulator, if used, as a matched fuel-delivery system.

Mechanical pumps are driven by the engine and are common on many carbureted applications, while electric pumps can support carbureted or fuel-injected systems depending on their pressure and flow rating. The correct choice depends on the engine, fuel system design, required pressure, required flow, and how the pump will be mounted and controlled.