How long would a good electric water pump last on the street with mild usage (maybe 50-75 miles a week)?

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1990 Pontiac Formula 350
Rebuilt 355
COMPCAMS 212/212 .440/.440 cam
Flowmasters 80 series.

 

A high end big dollar one should last a couple of years. Like any electric motor it will eventually wear out and need to be rebuilt.

The bolt on electric motors (Moroso) used to drive a water put are drag race only.

Just invest in a good aluminum water pump. It will be more reliable on the street. At least if your alternator fails, the water pump won't quit from lack of power.

The HP saving from using an electric pump on the street doesn't justify the extra cost of the pump.

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Follow my racing progress on Stephen's racing page
and check out the race car

87 IROC-Z SuperPro ET Bracket Race Car
461 naturally aspirated Big Block

Best ET on a time slip: 11.242 altitude corrected to 10.89
Best MPH on a time slip: 121.52 altitude corrected to 125.89
Altitude corrected rear wheel HP: 497.9
Best 60 foot: 1.546

Racing at 3500 feet elevation with a typical race day over 5000 feet density altitude!
Member of the Calgary Drag Racing Association

87 IROC bracket car, 91 454SS daily driver, 95 Homebuilt Harley