Da!!! Whats a morons. All ways love these Threads!

 

All i know is, my 02 mustang GT hit 201 with only a catback and 4.10 gear

 

Bob Norwood has some interesting data on what it takes, in terms of power, to achieve a given speed.

Interesting read. Sorry for the Google cached link. The main site is down for some reason.

 

All i know is, my 02 mustang GT hit 201 with only a catback and 4.10!!!

NOW I find that hard to swollow! There is not enough HP with just Catback and well ( maby 310 BPH Dose not = 201 MPH with 4.10) Not enough Power or RMP to Get to 200 MPH. Sorry not trying to start a fight but We all know that a GT is a Quick Car and With a 4.10 It would be even Quicker, But No way a top end of 200 MPH.
PS here is a Mustang that will do 200 MPH!

 

 

Glad to see you took it so well!

I do not post much but these Threads just bring out the in me

 

First off. Why are you so angry? Pull the stick out and maybe listen to someone who is a mechanical engineer and actually calculates these things for a living. (Let me head off the pre-emtive quip about my engineering abilities since I have a very successful career).

Because, as is pretty obvious, the low torque engine that revs higher can have the same horsepower as a high torque engine with a lower redline. You've pointed this out yourself in your examples.

However, as you know (maybe?), the car with the high lower end torque can get off the line faster, so this becomes important for calculations, such as if one was creating a spreadsheet.

WHICH WAS THE ENTIRE FRICKIN POINT!

That's because HP=Torque x RPM/5252. Duh........
For someone who is so correct, you know surprisingly little.

Was that supposed to be funny? Don't try any standup.


No need to call dyno shops. No dyno "measures" hp. All measure torque, and then calculate HP. HP is a usefull metric for comparing dissimilar engines. I'm not knocking it at all. The first question I ask when I see a new car is how much HP. But we were talking about a single engine, an LS1, and what it would take to go to 200mph. Since the redline can't be changed too much, increasing torque is the only way to increase HP (imagine that, since HP is really only torque x rpm!!!).

So your being a complete jerk for arguing that HP is the only thing that matters, yet HP is still just torque x rpm. Do you get it yet?

No, really, do you understand??


Torque is force x distance, power is force/time. If you really want to get technical, power does indeed have nothing to do with moving one object faster than another, it does have something to do with the time it takes to move one object faster than another.

Funny thing is, I have the education and any legitimate texts to back me up. What do you have?
The old addage, torque=0-60 and hp=top end is still true, but most useful for comparing dissimilar cars/engines. I've said nothing bad about hp. Only that its calcuted from torque. And torque was a better metric for use in a spreadsheet to calculate a car's performance. Yet somehow you still don't believe it. You point to dyno charts like they are some relevation without knowing what they really mean. (like not knowing why torque drops below hp at a certain rpm) .

There this new thing called google. Maybe you should try it.

I don't know why I even bothered to reply.

 

Very entertaining
RP

 

My head hurts from reading all this, I need a beer. How much torque does it take to spin off a beer cap?

 

Oh I am a mechanical engineer It is fun watching these things go on and on!!!!!!

 

"power does indeed have nothing to do with moving one object faster than another"

For an college engineer, you seem to be using high school equations that only work in a vacume... here on planet earth we have air... and air causes friction... reistance... so actually, power does matter getting one object to move faster than another... unless were in space. Thats why this forum was started, bc cars with 100 hp cant get to 200 mph can they? I guess you engineered a c5 ufo. Engineering degree huh? Thats funny. I graduated purdue deans list in mechanical engineering back in 04... but degrees dont matter, a retard is a retard, and schools hand diplomas to them every day. Torque does get you off the line faster... im not arguing with that... this isnt a drag racing thread, its a top speed thread... torque is not the unit of measure people need to worry about... period. Torque is not the only way to boost hp, theres forced induction... which is the way most people go to get over 500hp. Calculate it how you want, but the 2-3 numbers you will be using derive into the one number people need to use... hp.

 

the 4.10 gears are working against you. I know a forum guy who has 421 rwhp and 4.10 gears, he tops out at 165 mph, mostly because of his gears. I've had my vette up to 165 with plenty more to go but I have the 3.15 gears. The 4.10s will get you off the line faster but you sacrifice top end speed in the end.

If someone really wants to get the highest top end speed, his best bet would be the 2.73 gears. It would suck to use on every day driving but it would really help on a top end run.

 

I hate to say it, but Irun4cops is mostly correct. Power = top speed. Not weight, not torque, but power. Torque may dictate how quickly you get there, but not the actual top speed. Also, you don't necessarily "lose" torque past 5252rpm. Torque may still be increasing, but it is less than the horsepower number.

 

Guys, torque is just HP at a certain RPM. That is all.

 

Speed is a given distance divided by time. Torque is an actual measurement of the amount of work something can do in a radial motion. Horsepower is just a "Calculated" figure of torque and rpm. Without torque you have absolutely nothing, without horsepower you have nothing. What you need to make more horsepower is to move your torque peak up in RPM's. To go 200mph you would need to figure the weight of the car with driver, rolling resistance, and wind drag, then use a formula, or develop your own by plotting on a dyno 2 or more points and figuring the rest, taking into consideration the wind resistance and the weight of the car.

Mike

 

Horsepower equals Torque at a given RPM.

 

Torque does not get you off the line faster, to get any object to move you must create an action onto that object. Forget Horsepower. Torque is an actual measured figure and to get your object off of the line "Quicker" you must find where that engine makes its most torque and launch at that RPM. Chances are that you will have limited traction. I don't mean to bust your bubble and I too have a hard time believing that he is an engineering student but the retard comments are a bit much, wouldn't you say?

 

Yea, I am a Mechanical/Pipe Designer and some of this stuff is abit strange. Still funny and entertaining though.

 

Depends,,, How long is the lever? hehehehe,,,,, I feel like a yeagerbomb about now.

 

Very well said. Need any pipe designer/checkers up there???