Car and Driver lightning lap Grand Sport, 911 GT3 and McLaren 570-all run 2.47's
09-09-2016, 10:52 AM
#41
Stingray has slight rear weight bias- about 1.2%/40lbs more in the rear
http://blog.caranddriver.com/10-awes...e-c7-corvette/
http://blog.caranddriver.com/10-awes...e-c7-corvette/
09-09-2016, 10:54 AM
#42
09-09-2016, 11:58 AM
#43
The grand sport is a he'll of a performer.....midway between the z06 and z51 corvette..
What is truly shocking is how well the grand sport landed in this test at VIR...
Between the mclaren 570 and Porsche gt3 RS is dam impressive....
Technology,exotic mid ship or rear engine placement....DCT technology etc....money really no object super cars...
The corvette team did a hell of a job...
Now I'm not saying the mclaren or Porsche aren't fantastic sports cars....but rather that they are.......and the grand sport is right there with them...
Pretty cool
What is truly shocking is how well the grand sport landed in this test at VIR...
Between the mclaren 570 and Porsche gt3 RS is dam impressive....
Technology,exotic mid ship or rear engine placement....DCT technology etc....money really no object super cars...
The corvette team did a hell of a job...
Now I'm not saying the mclaren or Porsche aren't fantastic sports cars....but rather that they are.......and the grand sport is right there with them...
Pretty cool
Z51 = 2:53.8
GS = 2:47.1
Z06 = 2.44.6
09-09-2016, 12:08 PM
#44
Race Director
Thread Starter
I believe it's more accurate to compare same year testing than going back in time to compare.
Just my suggestion for accuracy in comparing any brand vehicle...
09-09-2016, 12:13 PM
#45
Year-to-year testing will yield some variation, but probably one of the biggest factors in track speed for the GS are those Cup 2 tires.
09-09-2016, 12:18 PM
#46
Pro
Absolutely, stickier tires and better brakes makes all the difference. Using NT01 tires on my otherwise stock Z51 is a difference of several seconds a lap on a 2.4 mile track.
09-09-2016, 12:35 PM
#47
09-09-2016, 12:43 PM
#48
Le Mans Master
It would be really interesting to get a set of wider wheels, slap some sticky rubber on there and see the difference. I may do it sometime. I was going to run PSS with 285 front and 305 (315?) rear but decided to stop pissing away money instead. Okay, fine. It was going to take 8 weeks to get the wheels in and I just got my OEM ones powder coated black instead. 
Next set of tires will probably be near GS sized.
I'm really curious if the Z51 brakes were at any point leaving anything to be desired on the track. I know they're "base" brakes but they're monsters.
Next set of tires will probably be near GS sized. I'm really curious if the Z51 brakes were at any point leaving anything to be desired on the track. I know they're "base" brakes but they're monsters.
Last edited by village idiot; 09-09-2016 at 12:44 PM.
09-09-2016, 02:03 PM
#49
Race Director
Thread Starter
I u derstand and yet we need to realize year to year comparisons over the years does maintain a certain degree of discrepancy in logic.
For all we know it could be track conditions or even tire technology.
Every year the times seem to get quicker and quicker ....even for like models tested year after year..
I'm still impressed though on how well last years c7 z06 did compared to this years Ferrari 488 ...a mid engined DCT super exotic with twin turbo power. The Ferrari is rightfully considered one of the finest sports cars in the world....yet it lapped slightly behind last years c7 z06...
I'm not sure gm future and recently rumored mid engine corvette will actually be faster on the track than the front engine z06....it probably will be but it could happen...that it's not...
Would be fun if car and driver drove a zr1 with modern tires against the new c7 z06...
Could be eye opening to say the least although the c7 z06 should be quicker...
For all we know it could be track conditions or even tire technology.
Every year the times seem to get quicker and quicker ....even for like models tested year after year..
I'm still impressed though on how well last years c7 z06 did compared to this years Ferrari 488 ...a mid engined DCT super exotic with twin turbo power. The Ferrari is rightfully considered one of the finest sports cars in the world....yet it lapped slightly behind last years c7 z06...
I'm not sure gm future and recently rumored mid engine corvette will actually be faster on the track than the front engine z06....it probably will be but it could happen...that it's not...
Would be fun if car and driver drove a zr1 with modern tires against the new c7 z06...
Could be eye opening to say the least although the c7 z06 should be quicker...
Last edited by JerriVette; 09-09-2016 at 02:10 PM.
09-09-2016, 02:16 PM
#50
Melting Slicks
We're guessing here but:
Bigger binders only help if the smaller binders don't have enough power to lock up the tire. Otherwise, you're traction limited. I'm fairly confident the Z51 calipers could lock it up, on street tires, at every turn short of the braking zone following the main straight.
I'd be surprised if there was much heat fade on the Z51 brakes. They're pretty bad ***, even if the Z06 brakes are more bad ***. They did something like ten 0-100-0 stops in the Z51 and found little to no heat fade. That's pretty good.
Z07 areo is supposed to be pretty effective. Again, all guessing, but reviews say it has some monster grip through turns. You're just not getting big g's without aero help.
Bigger binders only help if the smaller binders don't have enough power to lock up the tire. Otherwise, you're traction limited. I'm fairly confident the Z51 calipers could lock it up, on street tires, at every turn short of the braking zone following the main straight.
I'd be surprised if there was much heat fade on the Z51 brakes. They're pretty bad ***, even if the Z06 brakes are more bad ***. They did something like ten 0-100-0 stops in the Z51 and found little to no heat fade. That's pretty good.
Z07 areo is supposed to be pretty effective. Again, all guessing, but reviews say it has some monster grip through turns. You're just not getting big g's without aero help.
Take a stock sport bike out on the road and grab a fist full of brakes and you will get launched over the handlebars. Does that mean it does not make sense to upgrade the brakes?
Of course not, everyone puts on SS lines, and better pads at the bare minimum, and a lot of guys put on high$ rotors and calipers if they are serious.
The reason is there is a lot more to consistent hard stopping power lap after lap than just being able to overwhelm the tires.
09-09-2016, 06:36 PM
#51
Drifting
09-09-2016, 06:39 PM
#52
Drifting
Yeah, but it has more power, less weight, DCT...Why can't people admit the Corvette Team developed a great chassis??? Why are so many quick to counter argue anything that starts as a positive, always having to crap in others Wheaties??? Are we not all Corvette fans??? There are definitely some here needing Prozac. 
Edit: see post above as another example.
Edit: see post above as another example.
Why are so many quick to jump to the defense of the car instead of being able to have an intelligent conversation???
09-09-2016, 06:44 PM
#53
Is that a dig? If so explain why my post you quoted would deserve such a retort.
Last edited by 2cnd Chance; 09-09-2016 at 06:46 PM.
09-09-2016, 07:04 PM
#54
Suspension tuning also is important in putting great course lap time, the engineers did a great job in the calibration, the GS has its own suspension tuning to handle bumps better and give it excellent body control.
09-09-2016, 08:00 PM
#55
Le Mans Master
I read the article today & it was really interesting. The remarkable point is the Grand Sport was right on the Porsche's butt losing only by .1 sec. And the Camaro's both the V6 & V8 did great too. But, that Grand Sport was a $92K one! 
For that money I'd still go with a ZO6.
For that money I'd still go with a ZO6.
09-09-2016, 09:41 PM
#56
^GM seems to always provide loaded cars for test. For the LL it should only have the performance options - lower cost and weight.
I read the C & D LL magazine today, the GS was ahead of the GT3RS until the last straight to the finish line. It pulled out the .1 at the very end...extra HP and 300 lbs less weight (no AC, no stereo, upgraded CF parts...$200,000) Can Chevy build a chassis and suspension or what?!
I read the C & D LL magazine today, the GS was ahead of the GT3RS until the last straight to the finish line. It pulled out the .1 at the very end...extra HP and 300 lbs less weight (no AC, no stereo, upgraded CF parts...$200,000) Can Chevy build a chassis and suspension or what?!
Last edited by 2cnd Chance; 09-09-2016 at 09:45 PM.
09-10-2016, 11:01 AM
#58
^ it doesn't appear they liked the GT3RS much...a lot less than the sum of it's $200,000 in parts.
Last edited by 2cnd Chance; 09-10-2016 at 11:03 AM.
09-10-2016, 11:31 AM
#59
Racer
[QUOTE=Ivan Viera;1593026721]Here is the GT3 RS: http://www.caranddriver.com/reviews/...d-track-review[/
The GS is a great car, as are all the C7 models. The GT3 RS has hard core aero (big rear wing and front splitter) and they had to strip it down (extra carbon fiber, no AC, no front end lift, and removed most of the sound insulation) and still they are only 0.1 second faster at VIR. For less than half the price (more like one third as you can't buy an RS for anywhere close to sticker) a C7 GS will hang with the GT3 RS on track and you can use as a daily driver (not so much the Porsche - loud and hot). Mission accomplished.
Mine has been ordered, 2LT, Comp seats, PDR, Stage 2 Aero, no Z07 (CCB brake rotors are too expensive to replace on a regular basis when tracking and there are better track setups, Michelin SS are better for street than the Super Cups and I already have CCW's with Pirelli DH slicks which are better than the Super Cups). Price was $89k Canadian (that's $68k US) before tax.
I priced out the Z06's around here and they were at least $20k more expensive (in Canada, we don't have a surplus of 2016 Z06's sitting on dealer lots). It's not a question of affordability, I just don't want the Supercharger which is basically a heat pump as my priority is track, not strip, or street racing. The savings will be spent on further track prep - please don't start on 'track capable' versus 'track ready'.
The GS is a great car, as are all the C7 models. The GT3 RS has hard core aero (big rear wing and front splitter) and they had to strip it down (extra carbon fiber, no AC, no front end lift, and removed most of the sound insulation) and still they are only 0.1 second faster at VIR. For less than half the price (more like one third as you can't buy an RS for anywhere close to sticker) a C7 GS will hang with the GT3 RS on track and you can use as a daily driver (not so much the Porsche - loud and hot). Mission accomplished.
Mine has been ordered, 2LT, Comp seats, PDR, Stage 2 Aero, no Z07 (CCB brake rotors are too expensive to replace on a regular basis when tracking and there are better track setups, Michelin SS are better for street than the Super Cups and I already have CCW's with Pirelli DH slicks which are better than the Super Cups). Price was $89k Canadian (that's $68k US) before tax.
I priced out the Z06's around here and they were at least $20k more expensive (in Canada, we don't have a surplus of 2016 Z06's sitting on dealer lots). It's not a question of affordability, I just don't want the Supercharger which is basically a heat pump as my priority is track, not strip, or street racing. The savings will be spent on further track prep - please don't start on 'track capable' versus 'track ready'.
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09-10-2016, 08:04 PM
#60
