Anyone going over 200 mph???

[Stuart Adams]

Step One. Get a ski mask and hit the bank, to make your Chevelle race at 200 mph, you'll need a few stacks of hundreds!!

[Damn True]

Originally Posted by Stuart Adams

Step One. Get a ski mask and hit the bank, to make your Chevelle race at 200 mph, you'll need a few stacks of hundreds!!

Stuart, you owe me a keyboard. This one is full of diet coke now.

BTW, if you have time when you are at the bank grab some for me too!

[Musclerodz]

This was yesterday at Bonneville. Ran 236 on its trial run and set the short track record for its class. This is the only safe way to go 200+ mph IMO.

Mike

[nitrorocket]

Something kind of neat... This car goes 0-200 mph in 1 mile from a dead stop!

We have the same motor setup, but I am pushing about 50-75 more hp then him at the time of this video so I definetly know I have the power at least , I wonder what the drag difference is between our cars??

His car also does 150 mph in the quarter mile, It is amazing how it took 3/4 of a mile more jsut for 50 mph! That last 50 is sure a big difference!

It did this just as it sits in this picture. I need to put a camaro front clip on my car!

http://www.ls1speed.com/movies/intmd8_199.wmv

[camcojb]

Originally Posted by nitrorocket

Something kind of neat... This car goes 0-200 mph in 1 mile from a dead stop!

We have the same motor setup, but I am pushing about 50-75 more hp then him at the time of this video so I definetly know I have the power at least , I wonder what the drag difference is between our cars??

His car also does 150 mph in the quarter mile, It is amazing how it took 3/4 of a mile more jsut for 50 mph! That last 50 is sure a big difference!

It did this just as it sits in this picture. I need to put a camaro front clip on my car!

http://www.ls1speed.com/movies/intmd8_199.wmv

Yep, cool car. The next 50 mph is a big difference. That car is much better than yours aero-wise. Also much smaller grill area. I think they go 160+ with a stock 325 hp small block. Very good car to start with for higher speeds.

Jody

[Stuart Adams]

I can't believe that car goes 200 mph, really.

[mazspeed]

That car sure didn't look like it was going close to 199mph. The other videos that XV showed looked like it was going that fast, this did not. Maybe I'm wrong.

[fatlife]

Originally Posted by mazspeed

That car sure didn't look like it was going close to 199mph. The other videos that XV showed looked like it was going that fast, this did not. Maybe I'm wrong.

+1, could be wrong but that sure didn't look like 200 to me, but considering I've never gone that fast I sure could be wrong

[Damn True]

Originally Posted by nitrorocket

We have the same motor setup, but I am pushing about 50-75 more hp then him at the time of this video so I definetly know I have the power at least , I wonder what the drag difference is between our cars??


http://www.ls1speed.com/movies/intmd8_199.wmv

Camaro Cd - .34, frontal area - 21.6sq'
Chevelle Cd - .423, frontal area - 25.5sq'

Difference - HUGE

Now, take those numbers and work the math in the links I provided previously.

[dqhemi]

Originally Posted by Damn True

Camaro Cd - .34, frontal area - 21.6sq'
Chevelle Cd - .423, frontal area - 25.5sq'

Difference - HUGE

Now, take those numbers and work the math in the links I provided previously.

Here's a simplified formula I used to get rough numbers of HP requirements. Works best with real numbers for HP and Top speed and back into the CD and FA, then solve for HP requirements for any given speed. Meaning, if you top end the car, and have real dyno numbers, you can get a combined value for CD and FA for your exact car. Just takes some simple reworking of the formula.

HP = (CD * FA * V^3) / 150,000

If you have your top speed and HP then: CD * FA = (HP * 150,000) / V^3

With the numbers above to go 200 MPH w/ each requires:

391.68 = (.34 * 21.6 * 200^3) / 150,000
575.28 = (.423 * 25.5 * 200^3) / 150,000

This is a simplified formula and doesn't allow for rolling resistance and is probably more indicative of RWHP than at the crank.

If I were tackling the speed aspect, I'd start by trying to reduce the drag and frontal area. Dropping the car helps on the latter. Lots of ways to work on the former.

Contrary to what some of you are saying, I don't see any reason that car couldn't be made to run that fast reliably and with stability. That doesn't mean just anyone could do it - reliably and safely. It also doesn't mean it would be easy.

John Buscema
XV Motorsports
www.xvmotorsports.com