928nomore

I am real interested in a c7 now but cannot determine if its actually as fast as my current stock 07 Z06. (w/ track tires/carbotechs)

Would love the new car but would hate to be much slower on the track.
Some current personal bests for me are:

Mid Ohio w/ kink 1:36
Watkins Glen 2:08
VIR 2:06

I am moderately experienced driver so my hopes are that some of you hot shoes are seeing better times in a C7 Please let me know

blkbrd69

From what I have seen so far they are a few seconds slower in equivalent trim.

Hard to get over its down on power, heavier, and doesn't have the same amount of tire as a C6Z.

The driving aids help but we are back to that physics thing.

But it is easier to drive closer to its limit, so faster for some.

turbo8765

According to fastestlaps.com the C7 is faster than a Z06 w/Z07 package at VIR (assume this is Grand based on the times) by 1.7 sec. Impressive given how important power is at VIR.

The MTI C7 set a TT2 record of 1:12.7 at Roebling which is basically plaid.

There isn't a lot of data just yet but so far it looks like the C7 is FAST on track.

What tire on your Z06 for 2:06@ VIR full?

928nomore

I was running Michelin slicks but they were pretty far gone.

racerns

You have to be careful when using fastestlaps for lap time comparison, it is a great tool but you have to look at where the times came from for an accurate comparison. The C7 time was from a GM test session with Mero driving and the Z06/Z07 time was from the C&D lightning lap. Mero was a much quicker in the ZR1 (by +4sec) than C&D was for their lightning lap time.

turbo8765

Right, I hesitate to reference fastestlaps.com given the variability you noted in addition to some outright errors (F10 M5)…. I did reference it, however, because I just haven't seen many numbers to compare.

However, I'm still impressed that JM stock on stock PSSs is 1.7sec faster than the lightning lap driver on PSCs in the Z06 w Z07. It's likely the C7 is competitive with the Z06.

RedLS1GTO

Unless you have essentially the same driver with the same track conditions, same comfort level in car, etc there is no telling what you are actually looking at.

Look at lap times of people here at the same tracks in what are very close to the same cars for proof of that. If you look at endurance racing, even some of the best in the world in the exact same car at the same track on the same day can be quite different in their times.

turbo8765

True, but not quite as bad as you make it sound. The variability among experienced amateurs who drive as testers for major publications and the super fast amateurs (JM) is far less than the variability among DE drivers.

Numbers from an unknown DE driver are useless. Numbers from experienced journals are a viable reference point.

In any case, the TT2 record of 1:12.7 at RRR indicates the C7 has immense track potential.

racerns

One thing to note was that was the time for the Z06 Carbon in 2011 so it was running on the PS2s not the PSCs. Fastestlaps just groups the Carbon with the Z07 package for performance purposes since they are pretty much the same.

You also may want to check out the MT Laguna Seca times for both cars since they at least use the same driver, though not on the same day. The Z06/Z07 (PSCs) was almost 4 sec faster than the C7 Z51. The C7 was faster than the '06 Z06 but that car was driven by Max Angelelli, not Pobst like the others.

As for the TT2 record, that is a very fast time but it will be hard to find a comparison for a C6 Z06 since they have to be detuned to run in TT2.

car 99

The C7 is a stock Z51 M7 with new Hoosiers and a professional race driver. The 07 Zo6 is equipped with Pfadt headers and featherlites, cold air intake, LS7 internals are stock. Tires are used Pirellis - 18 all the way around and the driver is a 70 year old amateur still having fun.

turbo8765

Awesome video, thanks for posting!

Just out of curiosity, who was the pro in the C7?

It looks like there is snow on the ground! What were the ambient temps?

The hoosiers may have hurt more than they helped if it was too cold. Were they A6s or R6s? What size?

Also, what size tires on your Z? WHP on your Z? Do you know how much your Z weighs full of fuel but no driver?

car 99

The c7 tires are r6 I don't know the size. The z06 tires are 315/675-18 HP is 495 adjusted for 5k feet, weight is about 3300#,

car 99

Out side temp was 45 F.

turbo8765

Nice driving

NHZ06

I traded my 2009 Z06 for a 2014 Z51, after 5 years of changing tires and brake pads I am very pleased to get better track times with a stock car. The brakes are great, much more surface area (1 piece) and looking great after 2 track days at NHMS, I did have to upgrade brake fluid. New tires are holding track better than the R888's I was running. NHMS is a very technical track, Watkins Glenn next, can't wait. I could not be happier with the change.