Ultimate cooling set up

[Chris Ziemer]

Hi, my 82K5 has a four row radiator, severe duty clutch fan, spal pusher fan, which I think is 1650 CFM and I’m still easily hitting 210 in the California heat. Factory air conditioner obviously gets me there pretty quick.
If money were no option, what would your ultimate cooling set up be? I had electric fans at one point, but they must’ve been very cheap because they really didn’t do any cooling at all. Are there superior electric fans out there that will absolutely keep it cool?

 

[obijuank5]

This is what I have what works well for me in a big block crawler that was also in there when I daily drove it too.

Direct fit Be cool aluminum radiator with their matching fans and shroud with a bottle of water wetter. It has wheeled in Texas heat for many years and held temps even nose up for a while. For what it’s worth the fans are louder than the exhaust lol

 

[nvrenuf]

What makes your fan clutch “severe duty” other than the name? Are you sure it’s physically different than a typical HD unit?

How many blades on the fan?

Do you have the correct shroud on it?

 

[Chris Ziemer]

What makes your fan clutch “severe duty” other than the name? Are you sure it’s physically different than a typical HD unit?

How many blades on the fan?

Do you have the correct shroud on it?

Thanks, correct shroud and a 7 blade. The severe duty spins more aggressively at lower rpm’s. Everything is new by me, just finished the build. New GM 350 as well. Aluminum 4 row.
I do have the factory style AC condenser in front, which can’t be helping anything, but I’m not sure what the alternative is.

 

[tarussell]

There is/was an available S/D fan clutch that specifically noted that it was for a 4.56:1 gear ratio C/K-30 454 application - meaning that it stayed engaged closer to 1:1 aggressively and sustained it longer at constant higher RPM’s too. Meaning there are/were more than one S/D type.

There are differences in the pitch of the blades on those seven bladed fans too - I’ve found that certain ( not all ) 6.2 diesel cab chassis applications are the heaviest pitch and the center hub is stouter as well.

Usually a true big-block four core ( not all four cores are equal ) radiator along with the killer F/C & proper fan/shroud will handle brutal southern heat no matter what ya’ throw at it or stack in front of it.

There’s always the super-wide diesel radiators with matching shrouds - not all core supports have large enough air inlet holes so look out for that.

You could also use a pusher fan up front if desired.

There are several dual electric fan & radiator setups that work great but I just was mentioning what has worked for multiple rides in our circle of wheel’n buddies.


Also, verify that the new F/C is working properly because there’s way too many failures on new parts over the past few years.