I have a 1972 Buick LeSabre running gear in a 1929 Duesenberg metal bodied replica. The engine is a remanufactured engine from Gearhead. New radiator, new water pump, new DeRale 3700 CFM fans with a PDM controller. Today, I took it out for the first time since installing the fans. It ran very hot just as it did before installation of the fans. I am running a 50/50 antifreeze/water mix. Any ideas on how to cool the engine down? I live in Arizona and the summers get extremely hot. Today'* temp was in the low 80s and it overheated. The engine has about 150 miles since installed. Any suggestion will be greatly appreciated. I would like to change the car from a hangar queen to a decent street driver machine. Thank you

I would be curious to see pics of the car, and also to see what is going on in the front of the car.

How hot is it getting, and how quickly? Does it seem to do better in open road or stop and go traffic?

I'd use a little less coolant for starters, I'd go with a 30/70 mix, and add something like redline water wetter, or royal purple ice to it.
Be sure to use distilled water for the 70%, using that much water distilled would be the only way to go, as the more water you use there is a greater chance for corrosion, so change it a little more often than you normally would.
What temp thermostat does it have in it?

There has to be some other issue though, hopefully that can be figured out so you do not have to run a 70/30 mix, 60/40 would not be too bad once the issue is found.

Check to see what temperatures the fans are coming on. If you temporarily wire the fans to run constantly does it cool the engine? Just trying to rule out the possibility of the fans being set to come on at too high a temperature.


Are you certain all the air has been bled out of the cooling system? Does the thermostat housing have a bleeder screw?


Another option is to ship the car to me for the summer, and I will send it back to you for the winter. That way you can avoid the high ambient temperatures.