Help Me Cool Down

yellow rose said

The shroud becomes less important the closer the fan is to the radiator. Mine is close enough I don't need the shroud. If the fan will cool the engine at idle and low speeds without a shroud you are better off without it. As road speed goes up, the shroud becomes a restriction.

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Incorrect.
Your fan would have to pass over every sq in of core for that to be accurate.
That's what the shroud does though, it's funneling the air through the entire core to the fan's draw.
Your fan (and mine) only draw air through the fan blades swept area.
Some combos will need a shroud to keep cool, some wont.
It's not "run it close and you won't need a shroud".
I fit one to my app. but haven't needed it.