SherryBerg New Engines Electrical Electric Water Pump For Chevy Small Block – 35 GPM, Black Aluminum, 283, 327, 350, 400, SBC. Racing electric water pumps are CNC machined from 6061 aluminum to reduce weight and save horsepower. These pumps will free up 5 to 10 horsepower compared to a mechanical water pump. Electric water pumps …