Help Me Cool Down

It doesn't matter. If the fan is close enough to the radiator and pump speed is correct then the shroud really gets in the way (just like the fan) at MPH above about 10-15 MPH. It's not that complicated. The shroud is a fix for the fan being too far from the radiator. That's all. It ain't magic.

Makes a hell of a lot of diff. , h.p. creates heat , the more u have the harder it is to keep cool. Mine absolutely wont cool w/o a shroud. And I have had the fan in about every position it can be put in, and about every fan known to man , I did experimenting with diff. combinations "all" last summer , to come up w/ what I`m running.