CDH76

Just trying to see if I can get a idea for what speed I can hit. I'm around 690 at the wheels. Hoping for 190-195 but not sure if that can be done. M7 z51.

juanvaldez

There were some turboed C6 Z06s that broke 200. Sounds like you are at least in the ball park.

C7&7

700 wheel will net like 180-185 when topping out 5th gear I'm thinking. All the cars I've seen break 200 requires 800+ to get there in a mile.

Little Red Corvette1

Out of 19 Vettes, here were the top 5......

Speed .........Year Model Induction Methanol Notes

201.6 MPH 1999 Corvette........Single Turbo Methanol Injected 1080rwhp
190.5 MPH 2013 Corvette........ZR1 Supercharger Mods 750rwhp....stock C7 Z06's ran 173mph...
185.5 MPH 2014 Corvette........Supercharger Methanol Injected 685 rwhp D1SC Auto
181.1 MPH 2005 Corvette........Supercharger Methanol Injected
179.7 MPH 2014 Corvette........Supercharger NO Methanol Injection 642rwhp D1SC

CDH76

So looks like I should be happy with 185 MPH. Really hoping for 190 but I know at those speeds you need a lot more HP to get it.

Thanks for the info!

C7&7

Turn up the boost!

blown81bu

interesting all procharger cars a z and a turbo making 1080

jacksnorm

Should defiantly go 185. Those mph's listed are from a Colorado Event at +Elevation.

CDH76

haha I'm already running without the restrictor plate. Just need a good cold day!

I'll report back here in April with results

Little Red Corvette1

This is where your rear tire diameter will help you or hurt you.
Also, these Texas Mile guys will verify your ZR rated tires are rated at 186+.
If you can get decent traction at the start, I think you will do 190.

CDH76

That is good to know. I was about to purchase Nitto's NT05 they are ZR rated but how do I find out what max speed is for them?

Little Red Corvette1

The 2016 rules changed according to the Texas Mile folks.
I would ask them directly.

TIRES: DOT-approved tires in good condition are required to be used. The tire speed rating must exceed the speed rating that the car is attempting to achieve. For more info on speed ratings: http://www.tirerack.com/tires/tirete....jsp?techid=35

.......Most recently, when the Y-speed rating indicated in a service description is enclosed in parentheses, such as 285/35ZR19 (99Y), the top speed of the tire has been tested in excess of 186 mph, 300 km/h indicated by the service description as shown below:

285/35ZR19 99Y 186 mph, 300 km/h
285/35ZR19 (99Y) in excess of 186 mph, 300 km/h

CDH76

Thanks. I'm now looking at Nitto Invo's instead. They are Y rated. I tried calling their tech for questions at Texas Mile but no call backs. They are the hardest bunch of people to get a hold of.

Lurch33

Weather is going to affect your top speed. You should be in the 180s, potentially getting 190 if you get a favorable tail wind (north to south). I believe all of the results are posted going years back. I believe October 2012 or March 2013 was the best weather in recent years. Look for a CTS-V that ran 196.2 - that was the record up until a year ago when one finally hit 200.

They respond best by email. They've been dealing with Beeville trying to make sure they could come back, as well as setting up an Arkansas event so they've been spread thin.

TEXASRANGER

I was there as pit crew with LG Motorsports and they ran around 205 in a C6 twin turbo C6 I believe it was a 2008. It's not on the list!!

Little Red Corvette1

Twin turbos are a sweet set up.

Suns_PSD

The lack of wind resistance from the thinner air, should be much more of a gain than any small loss in hp on a Forced Induction car due to thinner air imo.

I use to top out sport bikes all of the time and bikes are very UN-aerodynamic. Even when they are slow at altitude from 0-100 due to 30% power loss on an NA engine, they'd have more top speed.

johnny c

holly cow. hopefully you have some good gear. crashing at 100 is a no win situation. then double it.

CDH76

Here is my results for anyone that was interested in knowing....

https://www.corvetteforum.com/forums...post1591918004

Little Red Corvette1

your 5th gear pulls hard. Great tune.