man, mike, almost everything you just said is wrong, haha.

"But I agree. I said previously, that you can accelerate the engine quicker with an electric fan"

This is the one thing you had right, it is accelerating quicker because there is less mechanical drag on it, and there fore it is putting out more horsepower at the same rpm.

" A Chassis Dyno Test is acceleration testing"

Dynos test power output, not acceleration. They have nothing to do with acceleration. You can put a car on a chassis dyno and let it idle, and it will tell you the HP, no acceleration of anything needed.

"If you have a marginal cooling system, then a mechanical fan is the only way you will be able to cool your engine"

My electric fan turns out more cfm than my mechanical fan ever did, and it does this independent of engine rpm. My electric is full speed at engine idle and moving tons of air. My mechanical is at 700 rpm at idle, and moving little air. If you have a crap radiator you will overheat much faster at idle with a mechanical fan. the same is true at speed. My electric fan is spinning faster and moving more air than a mechanical. If I cruised at 10,000 rpm like an indy car, a mechanical might work......

"The in-rush of air from a vehical traveling abouve 35 MPH, aids in the rotation of the fan, thus subtracting the amount of power the engine must use to rotate the fan"

This is true, But I race from a dead stop. At 35mph the amount of air coming through the grill, through the radiator and to the fan blades may help a little, VERY VERY little. hang a big heavy steel engine fan out your window at 35 and see it turn about 20 rpms. If your engine is at 1500rpm at 35, it still has to push the fan to 1480. With an electric fan, mine almost never runs if I am going above 35 and just cruising, so at speed I have ZERO fan to worry about. And if we use your reasoning, my electric is turned off at speed, but the wind is turning it, and a DC motor that is forced to trun is a generator, and you said electricity is power, so my fan, according to your ideas, is making HP, just like your wind generator......

I saw a great mag article online a while back with dyno tests for several different fan setups, stock, flex and electric, but I can't find it now.....

But then again, who the hell am I, I could easily be wrong too.... I doubt either of us is a rocket scientist or physicist. Let the mud fly....

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Psycho 69 Fairlane, 351W, AOD, 9", 3.50 & TracLok