Electric Water Pump info please

It is correct to say that the electric fans will add to the voltage requirment of the alternator. And will create more drag on the alternator than a belt driven fan and put more load on the cranshaft. But the water pump is another story. The water pump is a mini dyno and robs a considerable amount of hp by having it on the crankshaft. Electric water pumps will add voltage to the alternator also, but the increased drag of the alternaor is much less than the hp drag the water pump imparts on the crankshaft. 20 hp range in most cases. Install a field cut-out switch inside the car to allow 'removing' the alternator from the crank only when needed. Like when making a pass or making a point to another driver. Only needed for a few seconds during a run and then switched back on. The field wire is the green wire coming out of the alternator. Break this wire and switch it from the underside of the dash or anywhere you want to inside the car. Drag strip testing I have done shows a solid tenth and about 1 - 1 1/2 mph. For a 3 dollar switch. Good luck.

Terry