jim2527

So lets have some fun with this....

I'm placing the 'over / under' at 6:55 ....

Over: 6:56 secs or slower
Under 6:54 or faster
Push: 6:55

with perspective:

6:38.835 Porsche 911 GT2 RS (991.2) Lars Kern 14 June 2021 Official Nürburgring record attempt by Porsche.
6:43.616 Mercedes-AMG GT Black Series Maro Engel 4 November 2020 Official Nürburgring record attempt by Mercedes.
6:44.97 Lamborghini Aventador SVJ LP770-4 (2018) Marco Mapelli 26 July 2018 Lamborghini conducted test, full roll cage,
6:47.25 Porsche 911 GT2 RS (991.2) Lars Kern 20 September 2017 Porsche conducted test. OEM Michelin Pilot Sport Cup 2 'N2', OEM "Weissach Package", OEM deletion of audio and communication system
6:48.28 Radical SR8 LM Michael Vergers 19 August 2009 Dunlop Direzza DZ03 tyres. Production car status disputed,
6:52.01 Lamborghini Huracán Performante LP640-4 (2017) Marco Mapelli 5 October 2016 Lamborghini conducted test, full roll cage, Pirelli Trofeo R.[50][51]
.
.
6:55 Radical SR8 Michael Vergers 28 September 2005 Dunlop Direzza DZ03 tyres. Track car, road legal version is available with British Single Vehicle Approval.
6:55.34 Porsche 911 GT3 (992, 2022) Lars Kern 15 Sept 2020 Porsche conducted test. Michelin Pilot Sport Cup 2 R. 6:59.927 on the 20.832 km (12.944 mi) configuration.
.

6:56.4 Porsche 911 GT3 RS (991.2) Kévin Estre 16 April 2018 Porsche conducted test. OEM Michelin Pilot Sport Cup 2 R 'N0', OEM "Weissach Package", OEM deletion of audio and communication system
6:57 Porsche 918 Spyder Marc Lieb 4 September 2013 Porsche conducted test, observed by Sport Auto. "Weissach Package", Michelin Pilot Sport Cup 2 'N0'.[61][62][63]
6:58.28 Porsche 911 GT2 RS (991.2) Christian Gebhardt 17 April 2018 Sport Auto (7/2018), Michelin Pilot Sport Cup 2 R[64]
6:59.73 Lamborghini Aventador SuperVeloce LP750-4 (2015) Marco Mapelli 18 May 2015 Lamborghini conducted test, full roll cage, Pirelli P Zero Corsa.[65][66]
7:00.03 Ferrari 488 Pista Christian Gebhardt 16 May 2019 Sport Auto (11/2019), Michelin Pilot Sport Cup 2 R K1[67]
7:01.3 Dodge Viper ACR (2017) Lance David Arnold 1 September 2017 OEM "GTS-R Commemorative Edition", "Extreme Aero Package", Kumho Ecsta V720 ACR.
7:04.632 Mercedes-AMG GT R Pro Maro Engel November 2018 Mercedes-Benz conducted test (11/2018). Michelin Pilot Sport Cup 2 ZP. Ambient temperature of 12 °C (54 °F). Vehicle in accordance with regulations.
7:05.41 Porsche 911 GT3 RS (991.2) Christian Gebhardt 18 April 2018 Sport Auto (09/2018), OEM deletion of audio and communication system, Porsche Motorsport bucket seat and harness on driver's side.[74][75]
7:06.60 Mercedes-AMG GT R Pro Christian Gebhardt 22 May 2019 Sport Auto (8/2019), Michelin Pilot Sport Cup 2 ZP.[76][77]
7:08.34 McLaren 720S Christian Gebhardt 28 June 2018 Sport Auto (2/2019), Pirelli P Zero Corsa.[78][79]
7:08.82 McLaren 600LT Christian Gebhardt 6 June 2019 Sport Auto (9/2019), Pirelli P Zero Trofeo R MC.[80]
7:10.92 Mercedes-AMG GT R (2017) Christian Gebhardt 4 November 2016 Sport Auto (1/2017), Michelin Pilot Sport Cup 2 'ZP'.[81][82][83]
7:11.57 Gumpert Apollo Sport Florian Gruber 13 August 2009 Observed by Sport Auto, Michelin Pilot Sport Cup.[84][85][86]
7:12.13 Dodge Viper ACR (2010) Dominik Farnbacher 14 September 2011 SRT, Viper Club of America and ViperExchange conducted test. Michelin Pilot Sport Cup.[87][88][89]
7:12.7 Porsche 911 GT3 (991.2) Lars Kern 4 May 2017 Porsche conducted test. Michelin Pilot Sport Cup 2, PDK, carbon ceramic brakes, OEM deletion of audio and communication system
7:13.90 Chevrolet Corvette C7 Z06 Christian Gebhardt 24 April 2017 Sport Auto (8/2017), Michelin Pilot Sport Cup 2 'ZP', manual.[92][93]

Iker

Less than 6:50 on Cup 2Rs

Savoy2001

Cur2R's will kick this under 6:54 imo.

ZRacerLE

my prediction as well

cup 2R's are magic

Lavender

Renting a 'Ring Hot Shoe will knock off more seconds than you guys can possibly imagine. I doubt GM will do that tho. My guess is they will use one of their engineer who will leave boatload of time on the table...

keagan

In that case let’s hope sport auto or some other publisher does an attempt of their own.

JPMD

Road & Track reporting aero will be active (front & rear) but spy shots alone make it impossible to know for sure.

https://www.roadandtrack.com/news/a3...-proto-photos/

Any test videos showing active aero?
Active aero along with Cup 2Rs should make it faster than 6:54 or faster

AzDave47

... or more likely like the C7Z, Chevy won't post an official time, but Tadge will say he is pleased with the time.

WalterSobchak

I'm going to say >6:56 or right about there because they test in basically production trim. A lot of those other cars especially Porsche use the term production very liberally. I will say this is assuming this is NA 620-650 hp.....

2cnd Chance

Also don’t forget, much less rotational mass than previous 706/7 should help significantly on such a long course.

JG853

I believe it will be 6:55 or slower. I am going to say 7:05

TA

That would make it a huge disappointment.

keagan

6:58. Let's ask Mr. Jim Mero what he thinks.

ZRacerLE

I'm thinking the C7Z with Cup 2Rs and the MR recal could hit high 6:50s

JG853

You think so? Personally, I do not think that time would be disappointing given that the 911 GT2RS (Stock form) did a 7:05. Obviously the new tires compounds will help.

ArmchairArchitect

Agree with this 100%. It's what the other record-breaking manufacturers do.

ArmchairArchitect

The track itself was reconfigured and is much faster now.

JG853

You are right - I keep forgetting this. I will go with 6:58.

Jim Mero

Hey there keagan,

So, taking into consideration several things,

· The first and foremost new tires, I know that Lee Willard is a tire design genius. Whatever cup tires are on the C8 Z06, comparing them to the Cup 2 tires that were designed and developed by Lee and myself in 2013, seven years of tire design and advanced technology should result in an incredible tire for the C8 Z06. I would venture to estimate a lap time improvement of 8 to 10 seconds just based on tires.

· The second would be the DCT. More available gears to keep the horsepower and torque in the peak power band throughout the lap and lightning quick shifts.

· Better and more advanced performance traction algorithms. I did not use performance traction for every fast lap I did through the C7 Z06. I did embrace it on the C7 ZR1, having to do it over, I might’ve run the ZR1 the same way I ran everything else.

· I don’t know the horsepower of the new Z06 but keeping up with the horsepower gain throughout the generations, I see no reason to C8 Z06 would be any different.

· And of course, the driver. I do not know if they are going to have Oliver Gavin drive again. But now there is an engineer on the Corvette I feel would be just as fast, if not faster. His name is Bill Wise, he drove the 7:16 Camaro ZL1 1LE a few years ago.

Summing it all up, based on my armchair analysis, which actually has been pretty good in the past, I see no reason the car shouldn’t be 12 to 14 seconds faster than the 7:10 I ran in the C7 Z06.

The opportunity to have the Corvette be the first American car under seven minutes would be a significant achievement. I know, I’ve been there…….

Thank you, Jim

Z0Sick6

I was thinking 6:56 - 6:58 personally based off similar thoughts in what the Cup 2R tires will do, regardless of HP, what they want to achieve, and the DCT will of course help.

I think GMs goal is under 7 minutes for a car that starts at $84,995... or somewhere there abouts, I know you need to have the Z07 package and other things maybe to achieve the time, but that will be the marketing tagline.