Results Vs. Theory:
Here are the photos:
Photo #1:
+100°F day 75 mph with 7 blade fan and AC-Delco Severe Duty Clutch
(I also tried a Hayden Severe Duty Fan Clutch and it also kept temps up around 200°F all the time.)
Photo #2:
+100°F day 75 mph with 7 blade Lincoln flex fan
(The car will not ever get any hotter than this, even in traffic, verified by mechanical guage and ray gun.)
Note reduction in oil pressure in photo #2....Robert
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