Mechanical verses electric fan. How many OEM are building with mechanical fans these days. Must be a reason why!
In the majority of cases it is because the engines are mounted the wrong way...
A lot of the bigger vehicles like the 2500/3500 diesels do still use mechanical fans because they move so much air it is not feasible to use electric motors.
That said, for comparatively small/low power motors I am all about electric fans. They operate at all travel speeds so you don't overheat in traffic, they make the AC work much, much better at low speeds, and they are quieter than mechanical fans.
I have used the factory fans from an early 2000s taurus on a couple swaps and been extremely happy with them. They are a two stage system that moves absurd amounts of air, comes pre-shrouded, and is $10 at any junkyard in the country.
That said, I am running a mechanical fan on my ls swapped 84 because I was too lazy to change it and the mechanical fan works just fine in this layout.
