Radiator fan - before or after?

[Piwoslaw]

I've noticed that in some cars the radiator fan is in front, right behind the grill, while in others it's behind the radiator, between it and the engine. I can see +'s and -'s of both placements, but am wondering if one really is better than the other?

[ATaylorRacing]

Just a mater of space.

[Mediarocker543]

As previously mentioned, Its more for Space issues than efficiency.

[dremd]

If you get the choice put it up front.
Pressure works better than vac. When it comes to airflow over a radiator. I solved an overheating issue by switching from a rear mount 16" to a 12" front mount on my supra ( rear is no longer neaded)