Overheating -- Corrective measure questions.

AJ/FormS said
The leading edge needs to be the closest to the rad so, #50 is correct, for an engine that turns clockwise as viewed from the front bumper.. You had me going for a bit ...

Just Ron said
My questioning concerned the curve at the tip of the blade. The way it is facing would allow the air to fall away from the blade. If the curve is the other way, it would pull more air. Also the fan frame work is on the flow side of the blade. I think it should be on the back side. Still just observing.

I too believe the "frame" of the fan, where it the blades attach, typically is on the radiator (upwind) side of the fan. Flex-a-lite website confirms this. Swapping the fan's mounting will still put the leading edge toward the radiator, but the curve will cup the air and draw harder. Is there a chance?