Electric Fans

If I did electric fans, you've got a valve already on the truck that actuates the air clutch. ECM tells it when. Cut that wire, and use it to heat a relay going to the fans. Now you have electric fans that come on with ECM demand, and you can also use your factory manual fan switch.

 

Unless I read it wrong, its only for truck up to 450hp. Whats your hp?

 

Might want to consider a shroud around those fans. You will lose a decent amount of airflow through the rad because the fans can pickup and move the air that's already under the hood, rather than pull it through the rad.

 

Let us know how they do this summer pulling some big grades when 100+. Interested if they can keep the engine cool.
Looks like a nice set up

 

If you go with an electric fan, just make sure that it can handle your HP. You don't want to over heat and crack your head.

 

Here is what is on our new excavator. Eight fans in all.

 

That's smart, also watch your pyrometer don't give over 1000