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Old 12-05-2004, 06:22 PM
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Radiator Fan Housing

I just drop a SBC 350 in the 49 chevy pickup. I have a radiator
with a electric fan atached to it. I am put on a Machancal fan.

Do I need a fan Housing. It never had one on. Is there a
advantage other then safety.

If I need one to they sale them or do I have to get on made from
local fab shop.

Thanks

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Old 12-05-2004, 07:04 PM
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fan shroud

By all means put a shroud on it. Not only does it keep fingers out of the fan blades, it assists the fan in drawing air through the radiator. An unshrouded fan can draw air from around it and that can reduce the air flow through the radiator.
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Old 12-05-2004, 07:19 PM
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49dream,
I doubt you will be able to find a commercially available shroud. Spend a couple of minutes in www.google.com search for "1949 Chevy radiator shroud". I think you may have to get one fabbed up by you local shop.
AngliaBob
PS: it's only 1 click on "spell check", prior to "post reply"...takes 10 seconds...
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Old 12-05-2004, 07:26 PM
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Several places sell custom fan shrouds check Summit or Jegs or even J C Whitney!....

You should run a shroud. Thats how the Jap cars can cool their engines with radiators not much bigger than a postage stamp!!!
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Old 12-05-2004, 07:33 PM
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fan shroud

Fabricating a fan shroud isnt that difficult. Ive made them for my stock cars in years past.
The idea is to completely box over the area of your cooling coils, just like with a factory unit. measure the distance from your radiator to the center of your fan blades. You do not want the shroud to completely enclose your blades. For instance if your blades are 3 inches from front to rear, you want to only go back over them 1 1/2 inch.
Get you a piece of .040" thick, aluminum sheet, large enough to cover your coils plus the depth of the distance from the coils to the fan.

IE: if the coil area is 19" X 16", and the measurement from the coils is 6 1/2 inches, you will want a piece 32" X 29 ", at minimum.
Bend down the ends your 6 1/2 inches( will require a cut of this size in each corner. Do not cut away the eccess and toss it. leave it attatched as tabs to the part you bend over. Take the tabs and then bend them to overlap the part you bent over, to cover the corner. Fasten this with a couple small rivits at each corner.
Next you need the diameter of your fan. and exactly where it will center on your shroud. Once this is done, cut a circle 1/2 inch larger in diameter than your fan. finally, get some 1/4 inch hose and slit it lenght wise to put on the edges of the boxed over part, where they will come in contact with the radiator. You can fasten this to the radiator with 3-4 quick ties on each side. I would use good heavy 1/4 inch wide ones.
Paint or decorate to suit you, and install.
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