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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Opposite of mine , have to run a shroud for in town driving, cools off out on the road-----it will suck/circulate hot engine compartment air w/o one .
A lot of this cooling business TOTALLY depends on what kind of engine is being utilized, what works on a smaller near-ish stock engine wont work on a hi h.p bigblock in a tite engine compartment !