Overheating 360 new engine

inertia said

.............................Electric fans do take power, it's not free !
My racecars have significant rpm loss when the fans kick on !
jmo

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Electric fans, especially big ones will drop the RPM's when kicked on as they are drawing a lot of alternator power.

But do you use the fan at the Christmas Tree?

Are the fans on going down the Quarter or Eighth?

Most likely NO. No need with airflow going thru and shuch a short time.
But I bet you kick them manually on once you pull off the track.

But that mechanical driven propeller fan driven by the crank is sapping power down the track 100% of the time. It might be freewheeling somewhat if its a clutch fan but they never freewheel 100% and the mass of rotational weight is still there.

A ridged mounted "Flex" fan is kicking 100% @ 100% of the time.

To each their own. If you are passionate about mechanical fans, no one will change your mind. The little 4 blade ridged fan in my 65 Barracuda with a 318 worked wonders. But it was all stock.