Myself and my brother have swapped to/ run electric fans and waterpumps on everything we have
I have swapped several times from stock fan/ waterpump to electric stuff( as has he) and each time have seen right around a tenth difference at the track on a time slip. This on 10, 11, 12 second cars. My 9 sec Duster i had already swapped over when it ran 10’s .
I drive all my stuff on the street a lot and never had any issues with overheating. Including a couple of 70 mile round trips in a 10 sec eddie stroker to the track and back driving it.
My current car never gets over 185 ish even in summer heat and traffic.
Wouldnt consider any other way. Too many benefits at the track between rounds, and zero downside on the street.
Need a good fan setup, i run Derale stuff. Always had good luck and they are US made.
Lots of “ fake “ CFM ratings on some of this stuff. I have found if a fan doesnt pull at least 20+ amps, the motor isnt a player in cooling anything. Relay everything, have good wiring/ juice, = no problems