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Old 10-07-2010, 09:59 PM
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Radiator Fan Motor - 55 Chevy HotRod

Have a 350 55 Chevy 350 Truck where my 16" pancake radiator fan burned out (was a fan from a Geo Metro MP80124? or 6? A). Can someone please give me the basics of how to spec out a replacement? Straight or curved blades, CFU requirements, Amp draw, etc. Went to a speed shop they just gave me a universal fan with no spec information so I don't think I should just go on "looks-the-same." Thanks.

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Old 10-15-2010, 07:10 AM
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Your fan was not meant for that 350 motor. If you think about this, the Geo has a 3 or 4 cyl motor and you have it trying to cool a V-8. 1st mistake.
You want to get a good puller fan like a Spal 16". They will pull 2750 CFM and 2350 after attaching it to the radiator.
The fans on the market today will tell you that they have 3000 cfm or whatever they advertise. What they don't tell you is the static pressure drop when it is attached to the radiator. Spal has the least static pressure drop that I know.
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Old 10-15-2010, 07:50 AM
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Quote:
Originally Posted by sunsetdart
Your fan was not meant for that 350 motor. If you think about this, the Geo has a 3 or 4 cyl motor and you have it trying to cool a V-8.

To further add to this ... your truck was designed with a V8 from the factory. It came with a engine driven mechanical fan.



You should have LOTS of room for a belt driven OEM fan.
I do not understand WHY you would even want a electric fan ... I drove my 55 Chevrolet Cameo for many years with a 454/450 HP LS6 ... here in the Hot,Humid South and had a engine driven fan. I did have a 6 blade 16 or 17 inch one, but the Cameo ran right on the thermostat ... ALWAYS .
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Old 10-15-2010, 08:02 AM
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I agree, mechanical fans are better and that fan is too small.
The Lincoln Mark VIII & Merc Mystique, Ford Taurus, Dodge Intrepid & clones have very good high flowing electric fans.
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Old 10-15-2010, 12:48 PM
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This is a Lincoln fan.
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Old 10-15-2010, 06:10 PM
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I used a dual electric setup out of a Ford Windstar. Works great for my blown BBC. Can't tell you what the cfm is, but for $25.00 it was a steal. If you go the route I did just make sure you grab the whole wiring harness. If you don't use it all you can toss the extra stuff. But will save you a trip back to the yard.
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