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Another thing to think about is that on the trail your torque converter is unlocked and your building a lot of heat from that.
So if you add a fan cooled tranny fluid cooler like the stock 3500 trucks have, that kicks on the fan at a certain temp, that would help your trail temps a lot too.
I had my 90 do that even with a tranny cooler(but not fan cooled)
Fan clutches tend to go bad after 3 years anyways. If you spray down your condenser with a mist from a garden hose, and the vent temps drop like a rock when your AC is on max, it's time for a new fan clutch.
Your work does look nice. What you have is much better than what the PO left you with.
your AC will always cool down much more when you do this, no matter how new/old the fan clutch is,,,you are cooling the condensor much better with water than air can do anyways. Not really a very good example, sorry
This is meant as a simple test for people with marginal fan clutches. Professional AC mechanics use it quite frequently. Sorry if you don't agree with it. However, it does work.
4xcrazy is right. Spraying a condenser with water will drop the vent temps and high side pressure regardless the amount of airflow over the condenser. Be it from a mechanical clutch fan or electric fans. I am a "professional AC mechanic"...I've done this same 'test' before, but not to diagnose an airflow issue.