Lavender

So which is it exactly? They are nowhere near close to 190 but then they trap 190 ?

Make up your mind hello?

vrybad

What's your problem, hello?
Here's your quote:
I corrected you that they don't trap 190 in the 1/2 mile as you stated.
Do try to keep up.

Lavender

My bad. Meant to say standing mile not standing half mile. So yea a C7 ZR1 will blow the doors off a C8 Z06 when it comes to high speed acceleration.

vrybad

All good!

Lavender

CRS1962

Then no mention of the C7Z06. Roll races on you tube show neck and neck with the C8Z06 Most have mods and with mods they reach 700 rwhp quite easy. With 700 rwhp lighter and less weight should be faster than the C7ZR1 and the best brakes of the whole bunch. Seems those would do well !
JB Blown C5 comes to mind with his C7Z06.

PRE-Z06

Was the C7ZR1 using 91 octane by chance? The C&D C7ZR1 was running 100 octane.

Just to be clear, you’re comparing 100 octane and GM pro in perfect conditions to videos of average guy, unknown conditions and pump gas?

CRS1962

Trap speeds tell the whole story about top speeds. C8 has the dig and 0-60. But from rolling speeds or on prepped tracks that advantage go goes away.

AzDave47

No stock Corvette street car goes 190 in the standing start mile on level ground., unless there is a very heavy tail wind and the DA is exceptional.

FUEL: I do not know what fuel the ZR1 was using. I was running Shell 91 octane in my C8Z.

I agree the stock C8Z will not go 190 in the 1-mile traps. I would be very pleased if it will go 180, Still 172.525 in the standing mile at 6500' elevation is quite good, 1.5 MPH slower than a C7 ZR1, running the same course within 10 minutes of each other. In September 2021 at the same venue that same C7 ZR1 trapped a best of 174.231 MPH.

I don't know the exact crossover speed when the C7 ZR1 is accelerating faster than the C8Z, but it is likely somewhere between 110 and 120 MPH.

HIGH NOON ONE-MILE SHOOTOUT, Ely NV Sept. 15, 2023

Sponsored by Optima Batteries

Car Driver Navigator Year Car Make Car Model Speed
471 Foote, David Grey, Rick 2023 Chevy Corvette Z06 172.525
371 Makai, Balazs Meza, Abel 017 Ford Shelby 350 Mustang 158.710
413 Roach III, Frank oach Sr., Frank 2012 Chevy Corvette GS 155.666
89 Wehner, Patrick, 2023 Factory Five Type 65 Coup 153.840
402 Mattoon, Dane Mattoon, Mike 2000 Chevrolet Camaro SS 140.407
265 Tabor, David 2018 Factory Five Type 65 136.801
500 Burgess, Sam Bardwell, Sheila 2020 Shelby Gt500 169.607
314 May, Ted 1998 Ford SVT Cobra 148.739
145 Capener, Mark Lowman, Lanny 2019 Corvette ZR1 174.111
123 Rideout, Randy McCleery, Andrew 1982 Pontiac Trans Am 169.270

The 1-mile runs were timed with timing lights at the end of the mile, at 6500' elevation (that makes a big difference for NA cars and less so for most FI cars).

To my knowledge, none of the "navigators" were on board during the fast 1-mile timed runs. They were listed as they were navigators for the 90-mile speed class runs. I ran in the 150 MPH class and finished 3rd 1/4 second off my target time. For this run my navigator did not do any navigating as I always do my own stop watch and mile markers. He is a friend that offered to be my navigator "if I shut up". We agreed he could give me info if my primary and secondary stop watch failed, which they didn't.

combatninja

The Car & Driver article I linked had the ZR1 doing 183.3mph at the Texas Mile. So not really very close to 190. To get there, it would need a lot more ground, especially being a ZTK car. Non-aero car might be getting to upper 180s.

AzDave47

That 183.3 MPH run had some of the aero removed. With the aero the car came from the factory with it was 180. I don't think that was a ZTK car, but I may be mistaken about that.

mfain

FWIW, here is an interesting source of standing mile data. The Johnny Bohmer Proving Grounds does independent and OEM testing. They have a series of YouTube videos showing the tests of stock cars running the mile. Even though the tests are not run on the same day, they do post all of the conditions at the front of each video (temp, direction, wind, DA, etc.), and they have onboard data for each pass. When they tested the ZR1 in Feb 2020, it went 191.163. There was also a 2023 test where it went 187+. Other tests show the C8 Z51 @ 169.179, and the 2015 Gen V Viper (non-ACR) at 183,776. I couldn't find a test for the C8Z.

Mr. Gizmo

that was an epic test. The lpe zr-1 has held up well

combatninja

Just took another look. It was definitely a ZTK car and they made no mention of removing any aero, just that they trimmed the rear wing into it's most 'neutral' position. I kind of doubt a magazine writer would remove front aero bits off a 755hp car for fear of unbalancing it. I wouldn't do it. The prospects of squirrelly handling at 170+mph are not to be trifled with.

Mr. Gizmo

c6zr1 0-150 was in the mid 16's

AzDave47

C&D, June 2018 issue, ZR1 w ZTK, 13.7 sec, to 100 MPH, 6.1, to 130, 9.9, to 170, 19.9
Nov 2022 issue C8Z wZ07 and aero, 15.2 sec., too 100, 5.9, to130, 10.3, to 170, 24.9

range96

I was thinking about a 415 upgrade on my '95, but scarce crankshafts scared me away. Then it came the C6 ZR1, which made the 415 an exercise in futility.

I'm still waiting for any Corvette running for 24 hours and braking the stock C4 ZR-1's record.
Sounds about right. The C7 ZR1 has 117 hp more, but it weighs more. It will pull a lot harder than the C6 ZR1.

range96

Interesting, the last test managed 'only' 16.3 sec. to 150 for the Z07. I think there are just too many variables to draw meaningful conclusions. I can hardly wait for GM to release C8 ZR1 specs.

PRE-Z06

It’s an indicator as aero is a factor in the 1/4 mile, but take a look at Farmer’s stock C7ZR1 A8 low wing and stock C8Z06 low wing at similar DA of -600 and -428 respectively.
10.22@136.99
10.26@134.31
I was watching some of their videos last night, notice they always run with the wind which helps of course.

PRE-Z06

Here’s the 190mph ZR1 run with wing removed, notice the heavy tail wind. There’s a reason top speed runs are an average in both directions, just sayin.