[Sirrotica]

Originally Posted by lust4speed

I would argue that point. My '67 GTO has a high pressure area under the engine that builds up with speed. My fan does as much work at highway speeds as idling around town. Now if I were to get busy and make up an air dam for the front of the car blocking the airflow then that high pressure area would go away and the air would freely flow through the radiator. I remember reading that Trans Am's that had the front spoiler removed would run hotter on the freeway. Sounds like they had possibly an even higher pressure area under the engine bay.

Also as said above, a fan has to move a certain amount of air to maintain engine temps. This required energy should really be close to even between mechanical and electric fans. Otherwise the no-free-lunch principle would be violated.

That is true about the 3rd gen T/As overheating without the chin spoiler. I was doing some work for a car lot that had sold a 84 anniversary edition that the owner had dragged off the chin spoiler on a parking stop. It would O/H on the highway, but not idling. As soon as the spoiler was replaced, no more problems, very sensitive to not having that piece of aero hardware in place.

[tom s]

Is it just me or we are making a mountain out of Mole hill on a street pontiac?I can give a rats a-s about 5-10 HP!JMHO,Tom

[slowbird]

Originally Posted by tom s

Is it just me or we are making a mountain out of Mole hill on a street pontiac?I can give a rats a-s about 5-10 HP!JMHO,Tom

Some of us care about 5-10 hp. If I can find 10 places to find 10hp I'll be happy

[Formulajones]

Interesting discussion. I'm always looking for 5-10 HP in our street cars but I've never went after it through the alternator. Always figured there wasn't much there.

I have played with fans however.

[Steve C.]

A set up using electric fans only for cooling. I've seen it stated by some who track tested with the fans on and with them off, results were no measurable difference in ET & MPH.


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