47-55.1 Lincoln Cooling Fan

[Hcb3200]

You know why all the big suvs have dual fans and two speeds. Has nothing to do with cooling that engine under max load pulling down the hwy at 55. It has everything to do with running the AC while sitting still in traffic with no airflow. And a ac grill in front of radiator and an engine bay packed like a sardine can. Understand your needs before you build it.
If you plan on crawling in traffic with ac that’s one thing vs moving it down the hwy vs a nice back road cruise with the windows down and a few friends on a regular basis.

And when they put all those fans and shrouds in it restricts more airflow. At high speed.

[fauXGT]

It is a challenge to maximize cooling in a variety of situations. Build plates and shrouds only to restrict freeway speed function.
I used a 16” Spal with an infinite speed controller with the stock shroud on a 91 GMC without issue.
Sometimes experimenting is the best medicine.