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Old 08-12-2012, 09:47 AM
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Cooling question

I am building a tube chassis, sbc 350, 700R4, narrowed 9' Ford rear 1969 VW Squareback station wagon. I will also be running A/C. Question I have is this. I have a new aluminum radiator (fits 78-80 Camaro) with an electric fan/shroud that puts out 1800 CFM The car will probably weigh in at about 2,500 pounds. My question is. Can I just ran this fan only, without a water pump fan? Mainly due to room restrictions.

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Old 08-12-2012, 04:57 PM
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Yes, lots of guys run an electric fan only. Get a temperature controller though, do depend on yourself turning of a toggle switch like some guys do.
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Old 08-12-2012, 06:10 PM
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Why not just run the fan all the time ? After all a mechanical fan runs full time !
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Old 08-12-2012, 06:31 PM
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Why not just run the fan all the time ? After all a mechanical fan runs full time !
Not true at all. Mechanical fans stop spinning while at cruising speed. Running an electric fan all the time will use more power than a mechanical fan because of the elctrical draw on the alternator
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Old 08-13-2012, 07:45 AM
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Fan

Thanks for the replies about the cooling fan. So, if I use a thermostatically controlled fan switch, that should be all I need? No mechanical fan,right?
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Old 08-13-2012, 08:02 AM
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Originally Posted by bigdog7373 View Post
Not true at all. Mechanical fans stop spinning while at cruising speed.
Still not the whole story. Centrifugal fans (the ones with a clutch in them) do slow down at speed but a true mechanical fan is solidily bolted to the water pump.

A thermostatically controlled fan should keep you cool. You can always install 2 of them with higher capacity later if you need it.
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Old 08-13-2012, 08:45 AM
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It would be a good idea to use a shroud too. What size fan is it?
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Old 08-13-2012, 08:55 AM
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Good shrouding is absolutely needed as a lot of cooling issues come from lack of airflow to the radiator and also allowing for evacuation of hot air from the engine compartment..You may spend a lot of time designing and fabricating the radiator shroud..

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Old 08-13-2012, 09:32 AM
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Originally Posted by V8Square View Post
Thanks for the replies about the cooling fan. So, if I use a thermostatically controlled fan switch, that should be all I need? No mechanical fan,right?
Correct, but be aware of what you are buying. Here are examples of the kits. The BE Cool kit is the best user friendly. I have the BE Cool kit installed on my 1967 Camaro with no problems in 3yrs. Compare - SummitRacing.com
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