Wanna:

Would that give me more engine cooling capacity?

 

Well, it would have the same effect as moving the hose inlet without having to swap thermostat housings.

 

This thread got me thinking about my old style rad.

It is undersized for the power the truck can make.

Saw a Ford with the cornbinder diesel and was stunned at how much bigger the rad was compared to mine.

I have also heard that the old rads tend to block up from the bottom up. Would this not reduce the amount of hot air developed and interfere with the thermostatic effect for the clutch fan, further aggravating the engine temp?

I shall find and use a crossflow.

I only have a heat problem when pulling my 5wheeler with temps of about 90 and a bit of a crosswind. The real problem is a loss of power due to hot intake air and a need to use more throttle to compensate and thus develop even more heat.

I like the option of just increasing the rad capacity without getting into adding an IC or exotic cold air intake plumbing. If I need more, maybe alcohol is the way to go.

Climbing hills, even in warm weather is not a real problem. I just gear down using higher rev's and lower gears stay ahead of serious overheating. I am looking forward to seeing how much things improve with the 3200 gov spring. My rig has passed many more modern diesels that have blown their coolant because the drivers used full AC, had automatics and failed to pay attention to heat until it was too late.