Quote: Originally Posted by
7055 
Drag strip calculator? that like a computer program or something?
A real good at the tires hp calculation follows in a bit. It is great for use as far as what would happen if I took x amount of weight out...or what if I use this to see how fast I would go if I added another x hp at the tires. It does not take mph into effect and it works best if you have consistant hook....or if you have hook sometimes then not others you can see how much HP was wasted due to spin. It works on every car I or friends have owned. ALSO, if you did nothing to the car but put on shorter tires which made you run quicker it will show more HP evenh though you did nothing else.
Total wt X 200 =
now divide that by the ET 3 times
= at the tire hp
Some examples:
A stock powered Horizon that I have raced since new
2065 X 200 = 413000 divided by 17.00 3 times = a paltry 84 hp
The same car when new with the HO 110 hp motor, 5 speed, and not gutted
2525 X 200 = 50500 divided by 16.2 3 times = 118.7 hp
My bone stock SRT4
3190 X 200 = 638000 divided by 13.84 3 times = 240.6
Now you figure the formula backwards....lets say I put the drivetrain of my SRT4 into the Horizon and it weighs 100 lbs more than now
2165 X 200 = 433000, now divide by the hp 240.6 = 1799.6, take this and use a scientific calculator to get the cube root of it for what the new et would be assuming the traction was equals to that in the original SRT4 and the air conditions were the same....12.16 to 12.17
Weight does not matter as much to a high hp car than a low one. About 35 lbs is worth a tenth on the lowly Horizon, while near 200 lbs equalled a tenth on my old NOS fed high 11 second turbo GLH.
