Is there a general formula for how much an increase in horsepower or torque will help your acceleration? Such as to the effect of 0-60 MPH or 1/4 mile?

For instance, if i were to raise the flywheel HP of my car from 170 to 200, is there any formula that will give me a ballpark number on improvements in my 0-60 MPH or 1/4mile times?

 

Well, force = mass * acceleration, so it could be said that acceleration = force / mass.

Now with that said..

Speed = acceleration * time, or.. time = speed / acceleration.

If you still need help, I'll post some more.

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89 iroc-z 305 tbi
k&n filtercharger, open element air filter. nuffin' else

 

Try this program. It will give you an idea of the performance of your car.

Cartest 4.5 for dos

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trans-am 91 3.08 posi 5.0 lb9 5 speed stock

[This message has been edited by stallone (edited February 13, 2001).]

[This message has been edited by stallone (edited February 13, 2001).]

[This message has been edited by stallone (edited February 13, 2001).]

[This message has been edited by stallone (edited February 13, 2001).]

[This message has been edited by stallone (edited February 13, 2001).]

 

It's hard to use formulas on cars because you need to estimate the graph of your torque, some calculators have regression equations which are helpful in creating estimates of your torque curve. If you're really that interested in doing it mathematically post again....

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 Trans Am T-tops
4-bolt main 350, performer intake, headers, Holley 650, T-5, hayes clutch, dual elec. fans and 3.23's.
Daily driver and restoration
13.98 @ 101

[This message has been edited by 84FTA (edited February 14, 2001).]

 

Are you sure? I said:

Speed = Acceleration * time...

Acceleration is m/s/s, or m/(s^2), and time is well.. for this example s.. So..

Speed = m/(s^2)*s, or m/s, which is speed.


Of course, these formulas are ignoring wind resistance...

 

I'm sorry you are correct. I was talking on the phone as I read typed that actually what I came out with was meter seconds per second which makes no sense. Lol.

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1984 WS6 Trans Am Hartop
Former L69 Car under restoration
1984 Trans Am T-tops
4-bolt main 350, performer intake, headers, Holley 650, T-5, hayes clutch, dual elec. fans and 3.23's.
Daily driver and restoration
13.98 @ 101