One of the main reasons that drag racers go to an electric pump and fan is for cool down between rounds. You can keep the coolant flowing through the motor and the fan blowing with the engine off while you prepare for the next round. This is very important with large fields where you may go 10 rounds if you keep winning. In the later rounds there is no time to go back to your pit, you cross the finish line, get your timeslip and if it has on it you head right back to the staging lanes.

In the "old" days we built a bracket that would hold a heater blower motor and ran a belt over to a cogged pully on the waterpump. Then we had an light weight flex fan mounted on that. Tbe blower motor would spin the water pump and the fan, circulating coolant and pulling air through the radiator. Moroso recognized a good thing and started building kits to do the same thing.

When I converted my bracket car from motor driven fan and pump to electric I may have seen a slight performance improvement, but the real benefit was between round cool down. The other thing it allowed was getting the engine to consistant temperature for every round. If the motor was too cool you could leave the pump off while it warmed up. It was all about running consistant.

Pat