Thread: Thermostat vs Moroso Washer

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Originally Posted by MelloYello

.....,I didn't notice what year your Jimmy was but is there room for a shroud in your set up? If so, I highly recommend it.

Em,
On a mechanical fan or a puller electric mounted to the back side of the radiator a shroud is a necessary part of the cooling solution. However, on a pusher fan a shroud mounted in the front is going to block off about 50% of the radiator surface from direct velocity head (pressure from the car pushing into the air), and will severely restrict air flow through the radiator. A pusher fan runs without a shroud to allow maximum unrestricted air flow running down the road, and the fan mounted tight to the radiator to push air through the fan area when stopped, or moving slow in traffic.