Sign up now to join the JEGS email newsletter and be the first to learn about new products, special deals and e-mail only offers!
Upgrading to an electric water pump is a popular modification for GM and Chevy LS engines. Whether you are building a street performance car, drag racing application, or custom swap, choosing the right electric water pump can improve cooling efficiency and free up horsepower.
This GM and Chevy LS electric water pump buying guide explains how electric pumps work, what benefits they offer, and what to consider before making a purchase.
Why Choose An Electric Water Pump?
Factory mechanical water pumps are driven by the engine through a belt system. While effective, they create parasitic drag because the engine must spin the pump at all times.
An electric water pump uses an electric motor instead of a belt drive. This reduces parasitic loss and can free up a small amount of horsepower. In performance applications, this can contribute to quicker acceleration and improved throttle response.
Electric pumps also allow more consistent coolant flow regardless of engine speed. This can help maintain stable temperatures during idling, staging, or after shutdown.
Benefits For Chevy And GM LS Engines
LS engines are commonly used in swaps and performance builds, where packaging and accessory drive layout are important considerations. An electric water pump can simplify front accessory drive systems and create additional clearance in tight engine bays.
In drag racing or track use, electric water pumps can continue circulating coolant after the engine is shut off, helping to reduce heat soak. This feature can improve consistency between runs.
For street driven builds, electric pumps can provide reliable cooling when properly matched to the vehicle and power level.
Key Factors To Consider
When selecting a GM or Chevy LS electric water pump, flow rate is one of the most important specifications. The pump must provide adequate coolant flow for your engine displacement and horsepower level.
Material construction is also important. Aluminum housings offer durability and corrosion resistance. Quality seals and bearings ensure long term reliability.
Check compatibility with your specific LS engine variant. Different front cover designs and accessory layouts may require specific pump models.
Electrical Requirements
An electric water pump requires proper wiring and electrical capacity. Make sure your alternator and charging system can support the pump’s amperage draw along with other electrical components.
Using a dedicated relay and proper fuse protection ensures safe operation. Following manufacturer wiring recommendations is essential for reliability.
Street Vs Race Applications
For street vehicles, durability and long service life are critical. Choose an electric water pump designed for continuous duty operation.
For race only applications, lightweight construction and maximum flow may be priorities. Some race focused pumps are designed for short duration use and may not be ideal for daily driving.
Understanding how you use your vehicle will guide your decision.
Supporting Cooling System Components
Upgrading to an electric water pump is often part of a complete cooling system plan. High quality radiators, electric fans, proper thermostat selection, and coolant hoses all contribute to temperature control.
Ensuring proper airflow and coolant capacity is especially important for high horsepower LS builds.
Installation Considerations
Installation typically involves removing the mechanical pump, routing wiring, and verifying proper pulley alignment if accessories are retained. Some setups may require block off plates or modified accessory brackets.
Careful planning before installation helps avoid clearance issues and ensures smooth operation.
Finding The Right Electric Water Pump At JEGS
Choosing the correct GM or Chevy LS electric water pump ensures reliable cooling and supports your performance goals. At www.jegs.com, you will find a wide selection of electric water pumps, wiring kits, and cooling system components designed specifically for LS and other GM engines.
If you are unsure which electric water pump fits your LS engine or performance build, the JEGS Tech Specialists are available to help you select the right components for your application and driving style.
Leave a Reply