Anyone going over 200 mph???

[HAULNSS]

Here you go...Click here. One mile straight with a nice bank into turn one.





That shot was of a 600hp '93 Z28 set up for road course duty during one of our club events at BIR. Pic of the car is here. That same car was radared at 219mph in a western state with a different powerplant that had much more power.




Randy

[hotrods]

I only have on thing to say on this topic. GO TO bigredcamaro.com Looks alot like a stock body to me everyone seems to me to be making a way bigger deal about this than it really is 200 mph is not that big of a deal. Look at some of the vehicles that hold land speed records and you will be amazed at how many have gone faster than 200 and dont look like a nascar or the space shutle.

[hiwayman]

hey hotrods cheers for the link big red at the Z2Z holy how fast did they go awsome!!!

[clill]

Look at the pics of Big Red and you will notice how the front end is drooping down. They pie cut the fenders where they meet the door and dropped the nose down to keep air from getting under the car and it creates downforce on the hood..

[nitrorocket]

Big red just has a stockish looking front air dam. I guess I will just lower the car and put some adjustable shocks on and test it out a few mph at a time??

[Colvindesign]

I went 170 (radar backed up) in a street car once, and only once. And it was built to go that fast and then some. This was in a 1979 Mustang with modified aerodynamics and a much smaller front profile than a Chevelle.

Here is what I would suggest to someone trying to do so,

full tube chassis. Full street race suspension. Very expensive Forged wheels, Very expensive 200 mph tires.

Honestly, for the price of getting your car "safely" to 200 mph, you can just build another LSX powered muscle car that will be awesome and you will have two awesome cars instead of on that will most likely kill you. Doing 200 on a road instead of a track, leaves you open to what can happen on a track, plus what can happen on a road. Think about how much a 15 lb animal will weigh when it is coming at you at 200 mph.

Yeah, it'd be cool to say "My car went 200 mph" but it'd be really pointless if you were not around to say that.

[Streetking]

Ok, the first time I went to Silver State in my old '84 Vette, I was doing 208mph with no spoilers. I had the car really low, street Michelins (didn't know any better), and I had a passenger. The car handled fine. I had the Konis turned to the max stiffness and a good alignment done. The next year I went back with a stronger motor and had to have a cowl hood to clear the bigger carb. Same suspension set up, different passenger and the car was all very unstable above 185. Infact, I could only go about 195 because it was really scary. I couldn't believe that just adding the cowl hood made that much change in the aerodynamics of the car. Up to 170, I could basically drive one handed and have a conversation with my co-driver, above 175 it was another story.

As far as 1/4 mile time, my old 6spd Supra ran 9.81@ 153.7, so you can run over 150 and still be in the nines if your car has alot of power and is not set up for the 1/4.

I did the Texas mile in my Viper 2 years ago and ran 191 with it making 650 rwh and 657twt. I'm going back later this year with the Viper, now that it's making 1300 rwh we want to see what it will do. The problem now is how we are going to hook up 1300rwh on street tires. We are going to have to turn the boost down and probably have to ramp it up with the ECU through the gears. I hope to crest the 200mph mark in the standing mile.

Bottom line is, it's not all just about horspower, there alot of factors for you to get that horsepower to the ground and being safe at the same time..
SW

[USAZR1]

Originally Posted by camcojb

The last Road and Track standing mile had several heavy hitters including a champ car, 1000+ HP Viper, twin turbo S7 Saleen, a couple other race cars and exotics (modded), etc. There was not a single car in the bunch hitting 200 mph in 3/4 mile like you think yours will do. There were three that could hit 200 in a mile, and 11 that were 154-185 mph. The three were the TT Viper at 210 mph, the TT Saleen S7 at 205 mph, and the Lola champ car at 203 mph. You have the HP of the Viper, or something close although he'll have you on torque, a few hundred pounds lighter, and much more aerodynamic. The Saleen and Champ car are lighter still.

Your car may have the power to make 200 mph, but not in a mile in my opinion. But I do not think you can control the car at that speed either without some big help in the air management area. I do not know what changes would be required, but HP alone will not get you there, at least not and live to tell about it. Your car is dangerous compared to most in that it has the HP to get you beyond what the car can handle. In other words, the standard 500-600 HP Chevelle would be limited to say 160 mph as he would not have the HP to push the car shape any faster. He might be near the limit as far as lift, etc. but not over it. Your car will push past that on power alone and will get into an area you do not want to be in.
The goal is cool (except for the street part) and I hope you pursue it. But please do it with the safety equipment required and work your way up in speed testing the handling and air management changes. I would be talking to the Bonneville guys as they go very fast in stock bodied cars of all shapes and sizes.
Jody

This is a very intelligent post. Jody knows what he's talking about. SW has been there too. I've been over 175mph numerous times myself,on bikes and in modified ZR-1's. Corvettes and Vipers are pretty stable and confidence-inspiring at ultrahigh speeds but I would be extremely careful working your way up with a Chevelle. If the car decides to fly,it can happen so fast you won't be able to get outta the gas in time.

FWIW,you will not need a 6spd trans to run an ORR. Most of the Unlimited class cars are running 4spds with 2.00-2.50 final drive ratios.

[Damn True]

Originally Posted by hotrods

I only have on thing to say on this topic. GO TO bigredcamaro.com Looks alot like a stock body to me everyone seems to me to be making a way bigger deal about this than it really is 200 mph is not that big of a deal. Look at some of the vehicles that hold land speed records and you will be amazed at how many have gone faster than 200 and dont look like a nascar or the space shutle.

Yeah, Big Red looks stock on your computer screen. However it is anything but. That is a very well thought out and sorted chassis and body built by people who knew EXACTLY WTF they were doing.

The post above about the effect of the change to a cowl hood is very telling.

The link I posted a page back will explain why that happend.

[nitrorocket]

I can do close to 150 mph from a standing stop in only a 1/4 mile right now, that is why I was figuring I could do another 50 mph in an additional 1/2 mile. I may take a mile to reach 200 mph, but I can surely do it as the car sits in my garage right now, the matter is doing it safely and for a possible extended period. My car right now is making a little over 1000hp and 850 ft/lb of torque, give or take a little bit.

My gearing with overdrive will only allow me to do exactly 200 mph at redline anyway.The car, so far rock stable at 150 mph, although I have not tried to really hold that speed for any period of time yet (on ramps are not long enough). I am sure it will be a slow transition to make it a road race car, but I luckily already have most the mechanical parts I need. I still need to decide on shocks and rear anti-roll bar yet, I also want to switvh over to the 4L80E trans.

Thanks for all the input, but lets stop arguing about the power, I easily have enough, don't forget I can add som high octane and turn it up to 1200+ hp at the touch of a button, so the power is no concern whatsoever .