Best "Sweet Spot" on a radiator?

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Ricko1966

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With a shroud you pull air through the entire radiator. If against the fins you are only pulling air through the section covered by the fan.
True,if you have enough fan to do it,and the fan is properly positioned in the shroud. Your average aftermarket electric fan isn't going to draw enough or be properly mounted in the shroud. Most actually become an airflow hindrance much past 20 mph.
 

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