A mechanical fan with no clutch does not have “low parasitic drag”. The higher your RPM, the worse the parasitic loss gets. And at speeds where you don’t even need a fan.
Literally the worst thing about mechanical fans. At low RPM and low speed, when you need airflow from the fan the most, you have the least output from the fan. At high rpm and speed, when your literally don’t need the fan at all, it’s moving the most air. Which is why pretty much every new car runs electric fans.
Yeah? How many cfm does that fan blade move? And at what RPM’s?
Let’s see the specs so I can show you the electric fan that will do it.
I bet you’re wrong. And remember, what it takes at idle and what it takes at 6k rpm are very different.
The factory thermostat on all of these A-body cars was a 195*F. Look it up.
New cars are harder to cool anyway. The engine compartments are tighter, the hp per cubic inch numbers are MUCH higher, and that means more heat with less metal to absorb and diffuse it.
