[Agent_4573]

Ok i read most of the posts here and there pretty much right on. THe one that said he was making 550 horses w/ 4.10 gears though isn't really helpful though because horsepower is defined as work done per second and work is force multiplied by distance. Because you have a higher gear ratio, your rear wheel horses will be higher than someone with 2.73's or 2.40's.

Once you get up to speed, aero dynamics plays the biggest role of all. First off your gonna need to basically take a formula 1 approach to the car. The underside is going to have to resemble an upside down wing or else the car will fly off the road. As for the frontal area of the car and the drag co-efficient, lets explain that now...


The resistive force from air is .5*density of air*drag coefficien*frontal area*velocity^2

the density of air at sea level 1.25 kg/m^3, so if you do this in the mountains it will become a little easier, but your also gonna lose horse power. the drag coefficent is anywhere from .5 for a sphere up to 2 for irregular objects. I'm going to assume around .8 for the front of a fox body stang. someone also said the the frontal area of a stang is 32 square feet. 200 mph is also equal to 89.4 meters a second(it makes it easier to do calculations in metric)

So at 200 mph you need close to 900 horses at the wheels. Things you can do to bring this figure down?
Lessen the frontal area, this means anything that will hit the wind straight on, including rear view mirrors, ground effects, fog lights, etc. Then you can lessen the drag coefficien(eg make the car more areodynamic) this may include a "rounder" front bumper, if you wanna cut the roof, you can slope the windshield more so its not so high. Completely sealing off the underbody will also make the car more aerodynamic. One huge sheet of aluminum bolted underneath to make the car "smooth" on the underside will help dramatically. With an overdrive of .67 in the t-5's you can turn 200 mph at 6000rpm with 3.37's in the rear end. I would suggest doing this cuz the higher the rear end gear the less flywheel horses your gonna need. Since ford makes 3.27's this may be the gear for you. If you lower the car, more air will flow over the car instead of under it, letting the air hit the more aerodynamic part of the car, this will also help. I'm not sure on how to computer flywheels horses to rearwheel horses with gear ratios, so maybe someone else can help me out there... hope this helps....