Cooling a big block in the desert

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The engine will only run at thermostat opening temperature IF the rest of the system is capable of maintaining that temperature.

If not the temperature will climb until the cooling system can keep up.
That's what I was saying. BUT most cooling systems are not designed to be that efficient. I drove my dart the other day and it was 20 deg F out. I never got above thermostat temp, just around town minimal stopping. Change the ambient up a bunch of degrees and the efficiency of the system comes into play. take 20 up to 90 (add 70 the thermostat temp) 180 gets you to 250. My cooling system can shed 50 deg delta so it runs at 200
 
That's what I was saying. BUT most cooling systems are not designed to be that efficient. I drove my dart the other day and it was 20 deg F out. I never got above thermostat temp, just around town minimal stopping. Change the ambient up a bunch of degrees and the efficiency of the system comes into play. take 20 up to 90 (add 70 the thermostat temp) 180 gets you to 250. My cooling system can shed 50 deg delta so it runs at 200

Exactly. With math. Bonus points.
 
I use Cold Case in all my cars with Dual high output Spal Fans sits about 188 in 105F, turn the air con on it goes to 208 also use a Davies craig electric water pump on a couple od cars helps keep up good coolant movement in slow traffic 30 gallons /min If using the high output fans & water pump it is a good idea to use a high output mechman alternator that puts out 14 vdc at idle
 

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