The problem "most don't get" is you must use a "System" and not go so cheap. Using some small CFM electric fans will not work. Using 1 big fan also may not work.
Don't expect to throw a bunch of crap parts together and have it out preform a stock fan.
Shrouds are a must.
If the radiator is 25 inches wide and 17 tall, two 12 inch HIGH CFM fans should keep any proper built engine cool. Six 8 inch ones will work best but costs too much.
If it draws 30 Amps, don't try to use 18 - 12 gauge wire, use 10 - 8 gauge. Use 18 gauge only on the relay trigger sides.
Relays, Make a power source 40 Amp relay that is switched on with the ignition. Feed it from the battery with 8 gauge wire. Now you can hook up Fan relays, Headlight relays, Horn relays, Fog Light relays...... All fed with 30-40 Amp's
Use proper sensors and relays or controller boxes.
So many times I have helped guys figure out electric cooling fan issues. 90% of the time they are using 18 gauge wire, coming off the Ampmeter side and maybe a relay switched by a temp sensor.
I rewire it all using proper size wires, relays and controls. Piss poor design equals piss poor performance.
