How close, is to close for rad fans to water pump pulley space

Shrouds not only help cooling at low speeds, they are a safety device.

There is definitely some truth to this. They help protect the fingers of people who aren't paying attention, or just aren't very bright! (Story to follow!!)

Back in the 80's when I bought my Charger, it had a 440 with a fan like the one shown below, with no shroud. I stopped by a friend's place once and we had the hood open and the car running. One of his friends that didn't know much about cars says "What's that blurry area (the spinning fan). We said "What are you talking about?", so he reaches to point at it and before we could stop him, he proceeds to stick his hand directly into the fan. Keep in mind that this is a running 440, a sharp/stiff fan, and no fan clutch. Luckily, he didn't lose any fingers, but cut them up pretty good.

In my opinion, shrouds do a very nice job of directing the draw of the fan to the radiator for better flow when you are stopped, but I couldn't agree more that they serve a safety purpose as well.

Fan.jpg