I don't know why i am jumping back in, but I am... Bill you are a freak! haha

2 hp does NOT qualify as "having more power." "Power" is a combination of horsepower and torque. It is funny how you with your van say how much you can tow, then you talk about the 7.3 is great, but not the 6.0 and 6.4. Pay attenion, the 7.3 stock is a dog compared to the other two engines. Yes the 6.0 requires some maintenance and care and the 6.4 stock has bad mileage (though still better than the V10).

Point is, quit the tired arguments and double talking! haha

 

Well that's a new one. Here's what the guys who write the textbooks say:

"Power" is "horsepower".

"Horsepower" is the combination of torque and speed.

Couldn't agree more. A good, loyal, reliable dog, that will always find his way home.

 

Just to be close: Here are a few examples.

What is the definition of horsepower?

Asked by: Mel

Answer

Horsepower is the imperial (British) unit of power, now replaced by the watt - the new SI unit. One horsepower is the work done at the rate of 550 foot-pounds per second and it is equivalent to 745.7 watts. Horsepower was first used by James Watt, who employed it to compare the power of steam engines with that of horses.


Brake horsepower

Brake horsepower (abbreviated bhp) is the measure of an engine's horsepower without the loss in power caused by the gearbox, generator, differential, water pump, and other auxiliary components such as alternator, power steering pump, muffled exhaust system, etc. "Brake" refers to a device which was used to load an engine and hold it at a desired RPM. During testing, the output torque and rotational speed were measured to determine the "brake horsepower". Horsepower was originally measured and calculated by use of the indicator (a James Watt invention of the late 18th century), and later by means of a De Prony brake connected to the engine's output shaft. More recently, an engine dynamometer is used instead of a De Prony brake. The output delivered to the driving wheels is less than that obtainable at the engine's crankshaft.





OK. Remember Watt? He said that 33,000 foot pounds of work per minute was equivalent to one horsepower. If we divide the 6.2832 foot pounds of work we've done per revolution of that weight into 33,000 foot pounds, we come up with the fact that one foot pound of torque at 5252 rpm is equal to 33,000 foot pounds per minute of work, and is the equivalent of one horsepower. If we only move that weight at the rate of 2626 rpm, it's the equivalent of 1/2 horsepower (16,500 foot pounds per minute), and so on. Therefore, the following formula applies for calculating horsepower from a torque measurement:

Torque * RPM

5252

[FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular][SIZE=2]This is not a debatable item. It's the way it's done. Period.

The Case For Torque
Now, what does all this mean in carland?

First of all, from a driver's perspective, torque, to use the vernacular, RULES :-). Any given car, in any given gear, will accelerate at a rate that *exactly* matches its torque curve (allowing for increased air and rolling resistance as speeds climb). Another way of saying this is that a car will accelerate hardest at its torque peak in any given gear, and will not accelerate as hard below that peak, or above it. Torque is the only thing that a driver feels, and horsepower is just sort of an esoteric measurement in that context. 300 foot pounds of torque will accelerate you just as hard at 2000 rpm as it would if you were making that torque at 4000 rpm in the same gear, yet, per the formula, the horsepower would be *double* at 4000 rpm. Therefore, horsepower isn't particularly meaningful from a driver's perspective, and the two numbers only get friendly at 5252 rpm, where horsepower and torque always come out the same.

In contrast to a torque curve (and the matching pushback into your seat), horsepower rises rapidly with rpm, especially when torque values are also climbing. Horsepower will continue to climb, however, until well past the torque peak, and will continue to rise as engine speed climbs, until the torque curve really begins to plummet, faster than engine rpm is rising. However, as I said, horsepower has nothing to do with what a driver *feels*.



I can feel the extra 2 hp. In the V10

 

As it figures, KelVarnson beat me to the puch.

Broncoholic1, great post!

 

If I had known you were on your way, I would have gladly stepped aside. My Nomex suit is at the cleaners

 

Kinda got in on this late. So who won?

 

I did. :-)

 

At what ?

Bench racing ????

The V-10's kool-aid drinkers by FAR

None in Northeast Texas have the "Ahem's" to step up to the plate

Have any posted any time slips, dyno numbers, anything !!! other than words ?

 

No, not bench racing ...AT BS'ing...and the PSD'ers are winning.

There are at least 4 active diesel Vs V10 threads going on right now, so there must be some merit in the V10s. You know, where there's smoke there's fire?......

 

how many have you posted sparky!

 

Relibility is #1 to me. that is why i would rether tow with a 7.3 than a 6.0 or 6.4 .

 

my 6.0 has been reliable since i got it.

 

If reliability is that important, why do you use the wrong oil in your V10?

 

I am a dumb ****. The next change i will put the right stuff in it.

 

I dunno, one is 8 and the other is 10.whats the difference between gas and diesel it all comesout of the ground right?