NVR2L8

I am going to be driving in a high speed event at the Kennedy Space Center in February, and hope to hit 200 MPH in the one mile run. I know that I will be able to reach 200 MPH in the two mile run, but the one mile run is much more of a challenge.

My car is a 2019 Z06 that is bone stock, except for track tires, wheels and brakes.

I plan on re-tuning the car to run on E85, which requires a flex fuel sensor and aux. fuel pump, which I am told will add 60-70 rwhp and 80 rwtq. I don't think that this will be enough, so I am looking into additional power mods.

I don't want to get into the internals or spend $10k for one event, but other things might be in order, such as CAI, exhaust and sc pullies to increase boost.

Any suggestions from the "been there, done that" crowd?

TIA

Too-Fast

I have participated in this event back in March of 2019. You may want to check the JB you tube channel to see any 1 Mile tests with a similar car as yours that may have hit 200mph and then review the RWHP stated. My car is a 2011 Z07 that at the time was modified with 553RWHP and 500TQ and my best Mile speed was 180.XXMPH and top speed was 201.31mph and I had a bad clutch master cylinder (went to the floor on first 1/2Mile run) this reduced my top speed by about 3-4mph. In the research I have done my car would need to be at about 725-750RWHP to get to 200mph in a mile. My car weighs about 3250lbs. If you have a stage 3 rear spoiler that will slow you down considerably. As I recall, your cars top speed was listed at 186MPH from the factory with a Stage 3 spoiler set up.

rjacobs

It took my buddy in his 09 ZR1 ~1k whp to hit 200 in the mile.

Also needed a 4 point roll bar, harness, and some other safety stuff to tech over 200.

He ran a lot of events before hitting over 200. I think his ~4th run of the day at TX Mile he did like a 201, put the car on the trailer, and left... LOL.

Nowanker

https://www.corvetteforum.com/forums...e-tx-mile.html
Also check out posts here by AZDave47. He's been down that road....

slow04cobra

I know when i ran at Mojave mile i had to have some safety equipment other than for drag racing. Tires must be speed rated for the speed you would like to go. No tires over 5 years old. Fire extinguisher mounted in the front, Currect SA helmet, no dot and no motorcycle helmets allowed. Long sleeve shirt and leather gloves, eye protection and 5 point harness.

To go faster than 165mph up to 205 i think. 6 point rollbar, Fire suit, fire shows and nomex pants, shirt and head protection.

It has been several years since i attended and i an sure i forgot some stuff.

In my 04 Cobra I was supposed to stay under 165mph. At 520rwhp i hit 172.xx. I was given a stern warming. No recorded runs. A friend did take a picture as i went past the lights. Only areo mod was my designed hood vents. Stable as my Corvette.

harrydirty

I think the only things you forgot were the arm restraints and metal valve caps (on the wheels).........oh, and the harness mounting clips need to be safety locked with cotter pins.

boldtx

For my C5 it took about 780whp to go 203mph in the mile. I would say in perfect conditions Mustang dyno numbers 750whp should get you there. A lot of people claim 700whp will do it I am sure some have but they had a tailwind or sandbagging on dyno numbers with possible weight reduction. Also gearing can make a big difference again it can be a decent amount of trail and error. To date my fastest 1 mile run was just shy of 215mph and it took me a couple different engines and several other aero and FI combos.

slow04cobra

You are correct.

PRE-Z06

750rwhp was the number I was going to say for a C5 or narrow body C6, the C7Z06 has more drag so probably going to take 800rwhp. Gearing is important too and the M6 with .75 5th was geared about perfect for 200mph, the problem with the C7Z06 is it requires a shift at 185 and you’re going to some mph when you make that no matter how fast you are because of the aero drag. I assume the OP has a manual, but A8 would be better. He should tape up the front to limit drag, but don’t limit airflow for cooling as don’t want it pulling timing. Wouldn’t look good, but always wondered if running narrower base C7 wheels/tires would help from the lower rolling resistance?

slow04cobra

He should probably keep the rear tires so there is no wheel spin, definitely get smaller tires for the fronts. I ran 245 for my fronts. .75 might be good for 200mph, in my experience .75 is too tall. That is why the ZR1 went with a .80 5th and a .68 6th. The problem with the n/a engine that when you shift into 5th gear you are out of your power band. At the Mojave mile the C^ Zo6 Corvette guys were complaining that as soon as the shifted into 5th it felt like the car fell on it's face or didn't accelerate very quickly. With your aero it will be that much harder to get to 200mph.

PRE-Z06

Traction would be a problem down low, but run as sticky compound as possible since the distance/time spent below triple digits speeds is far less than the time spent above it. You should be at 100mph by the 1/8 mile and that means another 7/8 of a mile from 100-200mph. The C6ZR1 went to a .81 to maximize acceleration for the Nurburgring I believe, it won’t do 200mph in 5th. With the LT4 you’re not going to fall out of the powerband, so I’d rather not make a shift at 18Xmph which is going to cause you to drop back a few mph.

ApexWheels

Gearing and aero/drag are your biggest hurdles in trap speed events like this. My standing half and full mile experience is with GT500 Mustangs, but in those cars the gearing is what made or break mph goals for us. 900 whp, 4100lb race weight only did 169.9 in the half mile due to a 4-5 shift roughly 500 ft before the finish line, which basically stalled the car out. We never ran it in the full mile because of the gearing issue and some heat buildup. We also ended up auto swapping it, lost some power, and ran 170.1 in the half before retiring it. Gearing was slightly better but trap speed change was minimal.

My friends GT500 with nearly the same power setup but 250lbs less and more appropriate gearing did 183 in the half, and 20X in the full. I'd suspect your typical C7 Z06 would need at least 850 whp and good cooling to crack 200 mph in the mile. Most of that speed is going to come prior to when you have to grab the overdrive gear. Remove/fold the mirrors in, run skinnier tires up front or pump your factory front tires full of air. Don't focus on the first 1/8 mile, get the car moving and keep the momentum up (don't miss a shift or spin the tires). These are the simple things the casual mile racer can do to their car, otherwise there are deeper investments that make zero sense for something you're doing once or twice a year for fun.