Wayne, you misunderstand what horsepower is. It is the rate at which you can do work, "work" defined as applying a force through a distance. That force may be causing acceleration (F=ma), it may be overcoming friction (aerodynamic or rolling resistance), or it can be lifting weight against gravity. In the case of a car accelerating uphill, the engine is doing all three.
I have read your fantastic posts about your 150 mph Chevy; if you say it's true, then I guess it must be so. But it is HORSEPOWER, not gearing, that got you up to 150. If all you needed to go fast is the right gears, then every rice-burner with a five-speed overdrive transmission would go over 140 mph. Fact is, most cars cannot maintain the same top speed in overdrive that they can in the next higher gear: the power isn't there to overcome aerodynamic resistance.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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