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C7 Grand Sport @ track for the 1st time - very fast

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Old 01-08-2017, 02:13 AM   #1
fletcher8969
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Default C7 Grand Sport @ track for the 1st time - very fast

I recently traded my 2015 Stingray z51 (which I loved) for a 2017 Grand Sport Z07. I had taken the Stingray to a couple of track days (and had gone to the Ron Fellows Corvette owners two-day class that came with the car) but I don't have a ton of track experience.

The Stingray was fast for sure. The Grand Sport was shockingly more capable. Obviously, the pull was the same with same motor (both 7m) but the traction and grip were surprisingly different (Cup2 tires probably help a lot) and the CCB were like nothing I've ever experienced.

I have limited experience but my buddy (former pro driver racing Porsche Cup cars) who was at the track with me, drove the car and said he thought it was a fast on that track (Buttonwillow, CA) as his Ferrari 458 Speciale. He only did 3 hot laps and he was within a couple of seconds of this best time in his 458.

Other friends at the track that day that are comparable to my driving skills where surprised when I was 1.5 seconds faster than their 991 GT3 and about .5 seconds faster than that a non-pro driver in his 458 speciale.

It was crazy. I had been on the track with my Stingray at Willow Springs with the same 458 Speciale and was about 10 seconds slower per lap there.

I'm no pro (far from it) and have limited experience but I was very surprised how much faster the Grand Sport was on the track than my very fast Stingray.

Here's a link to my pro-driver buddy's fast lap.


Last edited by fletcher8969; 08-15-2017 at 08:25 PM.
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Old 01-08-2017, 02:06 PM   #2
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Nice lap! Nothing feels better than piloting a highly capable car. It's literally the only place that I can have a singularity of concentration. Us mid-Atlantic east coasters are at least 2 months away from a decent track day.
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Old 01-08-2017, 02:09 PM   #3
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I know what you mean, I live in Seattle so I keep my "fun car" in SoCal during winter months so I can take advantage of the weather when I'm down there for work or can get down there for a weekend now and then.
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Old 01-08-2017, 05:15 PM   #4
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^^^ Bring the car up to Washington during the summer. You'll probably like the Ridge Motorsports Park in Shelton. Great track with 50 ft. of elevation changes and a cool layout.

Last edited by Steven Bell; 01-10-2017 at 06:17 PM. Reason: No need to re-quote the previous post, especially if you're the next person posting.
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Old 01-08-2017, 05:35 PM   #5
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I don't know that track but looked like you where doing very well.
Nice lap !
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Old 01-08-2017, 06:12 PM   #6
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Quote:
Originally Posted by four0nefive View Post
Bring the car up to Washington during the summer. You'll probably like the Ridge Motorsports Park in Shelton. Great track with 50 ft. of elevation changes and a cool layout.
I'll have it back in Seattle by May. I'll very excited to try that track it looks really cool.
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Old 01-08-2017, 06:23 PM   #7
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Fletcher, did you feel a difference in brake power? What brake package where you running? I know the aero and wider/better tires make a huge difference but I'm curios about the brakes on the GS compared to the standard Stingray
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Old 01-08-2017, 06:44 PM   #8
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^^^ I was running the totally stock carbon ceramics and pads. Honestly the CCB are shockingly powerful. I had run my Z51 (with the cooling rings) at Willow Springs last year and thought they were great. No fade or overheating - it was a cool day and I only do 4-5 hot laps at a time to avoid overheating the tires and brakes - and the performance seemed great. But the CCB on the z07 are unlike anything I've ever used. The bite is incredible and the power to slow the car was staggering in comparison. I'm not a very experience track driver. I can't comment on the CBBs vs full steel racing brakes but I can compare the CCBs vs the Z51 brakes and there is a very noticeable difference. It is the biggest difference between the two versions I've had of the C7.

It took me three session in the morning to re-calibrate my brain. I would go for the brakes like I was used to in my Z51 and I'd over slow the car so much I'd have to accelerate to just get to the corner not through it.

My buddy who was driving his 991 GT3 with Porsche steels was blown away when he drove the GS. And even my other buddy who is a former pro driver and was driving his Ferrari 458 Speciale was impressed.

Incidentally, he mentioned that a lot of Ferrari guys buy the Z07 rotors for replacements on their 458s. They are basically the same Brembo rotors for less than half the price if you buy them from Chevy instead of Ferrari. Shockingly expensive still but a bargain in comparison.

Last edited by Steven Bell; 01-10-2017 at 06:18 PM. Reason: No need to re-quote the previous post, especially if you're the next person posting.
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Old 01-08-2017, 06:51 PM   #9
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Thanks for the reply. I was afraid you were going to say that. I can't swing it this year, but I really want that kind of stopping power.
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Old 01-08-2017, 06:55 PM   #10
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^^^ Sorry. But they are worth it! Good luck.

Last edited by Steven Bell; 01-10-2017 at 06:18 PM. Reason: No need to re-quote the previous post, especially if you're the next person posting.
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Old 01-10-2017, 05:46 PM   #11
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Quote:
Originally Posted by fletcher8969 View Post
I'll have it back in Seattle by May. I'll very excited to try that track it looks really cool.
Cool, hope to see the car at the track sometime! Let me know if you have any questions.
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Old 01-12-2017, 01:36 PM   #12
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Great video and very nice driving. Good to hear solid feedback on the GS.

Thanks, Chris
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Old 01-12-2017, 01:37 PM   #13
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Great video and very nice driving. Good to hear solid feedback on the GS.

Thanks, Chris
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Old 08-12-2017, 03:40 PM   #14
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Quote:
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^^^ Bring the car up to Washington during the summer. You'll probably like the Ridge Motorsports Park in Shelton. Great track with 50 ft. of elevation changes and a cool layout.
Been to The Ridge twice now. Great fun. I need to figure out the best club or events to attend. I've gone to the Track Night in America events which are fun but I'd like to find a more experience group to drive with.


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Old 08-12-2017, 03:59 PM   #15
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Thanks for sharing the great video ... and by my reckoning, you drive really well.
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Old 08-12-2017, 05:50 PM   #16
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The GS is just amazingly capable! I ran a 1:56.094 in the same config, at Buttonwillow, on my maiden track day with the car. I have iron brakes and the crappier PS2's as I did not get he Z07 package. My front tires melted on my third session. Car has a lot more in it. I can't wait to go back with more camber, slicks, and a DSC controller!
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Old 08-12-2017, 06:08 PM   #17
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Quote:
Originally Posted by fletcher8969 View Post
Been to The Ridge twice now. Great fun. I need to figure out the best club or events to attend. I've gone to the Track Night in America events which are fun but I'd like to find a more experience group to drive with.

https://youtu.be/ysOWuWm4Cq8
Hey, it was great seeing you at the last few events (Im the photographer that you talked to and the one that takes all those pictures you guys see). I'm obviously an advocate for TNiA events since I do photography for them, but if you're looking for more advanced groups/more track time, I would suggest Turn 2, PCA (don't have to be a club member to sign up for them I believe), and also the local BMW club.

The BMW CCA events are cheaper and they have lunch included which isn't a bad deal. Only thing with clubs and most run groups here in Washington is that they don't run any events after September usually. Track day schedules are pretty much April (or March) through September.

PS, in case you need a new phone background:
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Old 08-12-2017, 09:32 PM   #18
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Default Great cars

NCM Kentucky!
Here is mine at NCM
great cars for the track !!




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PS, in case you need a new phone background:
at

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Old 08-12-2017, 11:06 PM   #19
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Quote:
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The GS is just amazingly capable! I ran a 1:56.094 in the same config, at Buttonwillow, on my maiden track day with the car. I have iron brakes and the crappier PS2's as I did not get he Z07 package. My front tires melted on my third session. Car has a lot more in it. I can't wait to go back with more camber, slicks, and a DSC controller!
Wow! That's a seriously used tire. How hot was it? I think I'm going back to Buttonwillow in September for a friends birthday event. Always like Buttonwillow.
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Old 08-13-2017, 01:18 AM   #20
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You may want to try Pacific Raceway in Kent. It might be a little faster track.
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