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Old 08-10-2004, 05:00 PM
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SBC electric fan setup...

what is the best electric fan setup to have... push or puller? i would assume you would want the cool air to push THROUGH the radiator. i dont see how a puller could be better but i stand corrected. i was thinking about getting a dual 11'' SPAL unit. but they also have a selection for curved blades and flat blades. again... i assume the curved blades allow for better push of air. would buying a curved bladed-dual push fan setup be a smart choice? my engine runs at 160-170 degrees on the highway but at idle that clutch fan just doesnt cut it... it will climb right up to 200-210. so i figured i'd help the idle temp out. a cooler engine is a longer lasting one... any opinions appreciated. thanks.

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Old 08-10-2004, 05:17 PM
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My opinion would also be that a pusher is better cause more air is runnin over the coils to cool the fluid as compared to pullin air through. It would seem that with the radiator right next to the fan that the fan wouldnt be able to pull very much through. Im probly wrong but thats my .02.
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Old 08-10-2004, 06:05 PM
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A puller set up is always better than a pusher. With the pusher set up the fans themselves create an airflow restriction which will cause higher temps at speed. If you have the room go with the puller. Also use a shroud with the puller set up. I believe the Spal fans have a shroud.

Steve
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Old 08-10-2004, 09:29 PM
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makes sense.
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Old 08-10-2004, 11:41 PM
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do you think i should get the dual 11'' or the single 16'' puller? i only have enough room to fit either or.. and i dont suppose they make any fans bigger than 16''...
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Old 08-11-2004, 06:29 AM
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Quote:
Originally posted by Sagacious
do you think i should get the dual 11'' or the single 16'' puller? i only have enough room to fit either or.. and i dont suppose they make any fans bigger than 16''...
You want to go with the highest cfm rating. The duals will probably draw more amps than the single fan though. In either case use relays when wiring it up and make sure your charging system is in top condition.
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