2015 Corvette Z06 Performance Numbers
01-07-2014, 12:08 PM
#41
Le Mans Master
This stuff is simply amazing. State of the art sports cars right off the showroom floor with this kind of power! Really cool stuff. Hope it sells. Damn, I can remember back in the late 80s when I thought my '87, 4+3 was a screamer. We would have never dreamed any of this would be possible.
01-07-2014, 12:11 PM
#42
When you see numbers like this on a forced induction motor it means that the torque will drop off in the high range; how much depends on the rpm limit.
If we assume 7k rpm redline, and peak torque of 650, and peak HP at 620 we can calculate that if peak torque was made at red line, peak hp would be 866; so if your reverse the math you can determine that peak torque is made no later than 5000rpm, and that at 7k rpm the engine is making no more than 465 ft/lbs of torque
So what does this tell us? Most likely that the blower is a pretty small unit, and that it is going to have the classic "too small" torque curve. It will come on strong in the low rpm band, peak in the mid range, then taper off at an increasing rate as RPM increases.
01-07-2014, 12:18 PM
#43
And as I wrote in another post: it's incorrect information. Those aren't the numbers we're going to hear from GM next week. And the numbers we do hear will be of the, "At least..." variety.
Rest assured: no final testing, tuning, validation, verification, etc has been done with the car yet. They've still got quite a bit of work ahead of them. What we'll see at NAIAS next week is just like what we saw last January: "Here's what the car will look like and here are some of the things on it..." No precise numbers will be disclosed because GM doesn't have them yet.
Rest assured: no final testing, tuning, validation, verification, etc has been done with the car yet. They've still got quite a bit of work ahead of them. What we'll see at NAIAS next week is just like what we saw last January: "Here's what the car will look like and here are some of the things on it..." No precise numbers will be disclosed because GM doesn't have them yet.
I find that highly unlikely. Someone told the web-developers what to put on the Meta-data, and that information was well scripted.
Also the LT4 has been in development for a long time, and has been done for a pretty good amount of time; I have no idea why you would think that they don't know how much power it is going to make.
01-07-2014, 12:43 PM
#44
It's possible whatever numbers are mentioned at the reveal for the LT4 will not be SAE certified yet.
Oh, and I just read the same happened for the ZL1, where final HP was ultimately bumped up to 580
Geoff
01-07-2014, 01:36 PM
#45
Tech Contributor
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"Ask Tadge" Producer
It's the same source I've been in contact with for a while now. Revealing who it is ain't gonna happen. Like: ever. I pointed him at the Google screw-up, and he responded with a paraphrased version of what I already put in the forum (twice). He then had it removed, as is evident already.
You can choose to believe me or not; it really makes no difference to me. But when things are revealed on Monday, will you come back and apologize? Or are you going to just ignore the whole thing?
You can choose to believe me or not; it really makes no difference to me. But when things are revealed on Monday, will you come back and apologize? Or are you going to just ignore the whole thing?
01-07-2014, 01:36 PM
#46
Hi all! Since Corvette folks seem to look for performance associated with anything Corvette, here are a couple of links to some interesting websites that make a pretty strong case. Just an opinion and we all have those!
http://jalopnik.com/2015-chevrolet-c...d-f-1496255058
http://www.gtspirit.com/2014/01/07/w...and-c7-r-here/
Click or copy/paste and enjoy!
http://jalopnik.com/2015-chevrolet-c...d-f-1496255058
http://www.gtspirit.com/2014/01/07/w...and-c7-r-here/
Click or copy/paste and enjoy!
Last edited by jmk; 01-07-2014 at 01:37 PM. Reason: added plural to "websites"
01-07-2014, 01:46 PM
#47
Safety Car
This stuff is simply amazing. State of the art sports cars right off the showroom floor with this kind of power! Really cool stuff. Hope it sells. Damn, I can remember back in the late 80s when I thought my '87, 4+3 was a screamer. We would have never dreamed any of this would be possible.
I love technology!
01-07-2014, 06:37 PM
#48
Banned Scam/Spammer
01-07-2014, 07:58 PM
#49
No inside info, just a guess based on assumptions which is what anyone is really doing at this point. It was based on the OP assumption that the engine is going to be rated at 625/635 and my guess that it is not going to be lighter than the current ZR1. One of the reasons I think the M7 version would be not be faster than the ZR1 (from a standing start) is that the torque management on the M7 C7 seems to be very intrusive and seems to prohibit a good launch. Maybe this is something that will be changed on the C7Z. As for the road course times, the handling improvements of the C7Z are going to be incremental, not huge leaps forward over the ZR1 unless they do some drastic weight reduction or some significant aero options.
Like I said these are just educated guesses and I could be totally wrong.
Like I said these are just educated guesses and I could be totally wrong.
I'm baffled.
01-07-2014, 08:36 PM
#50
Drifting
I think we are all ASSuming it has mucho improvements in suspension, tires and braking (like the base C7) and we know the interior is much better (like the C7) I'm guessing many of us are fixated on the hp figures due to the measly jump of 30 ponies on the base C7, though a better tq curve.
HP is the sexy that sells and helps post track times that we can all brag about, even if we can't get our own cars to run the number.
If we see a NA Z with ONLY 540ish HP and/or a SC version in the 580ish range, I don't believe that's going to cut it for folks who expect at least a 75hp jump if it's NA and a 125hp jump if it's got a blower on it.
I'm thinking there are still lots of folks, with all the ballyhooing over the DI and such of the LT1 that were expecting closer to 500hp on the base C7 (me being one of them) that taking the track flagship and not doing something really exceptional with it in regards to hp/tq are going to be fairly dissapointed. If GM can improve the areas mentioned, as well as another 100hp+ THEN put it to the track and spank the current offerings from Mopar and Ford...that's when Jon Q. public will flock to the new Z, even those who hadn't planned on buying one previously...IMO.
HP is the sexy that sells and helps post track times that we can all brag about, even if we can't get our own cars to run the number.
If we see a NA Z with ONLY 540ish HP and/or a SC version in the 580ish range, I don't believe that's going to cut it for folks who expect at least a 75hp jump if it's NA and a 125hp jump if it's got a blower on it.
I'm thinking there are still lots of folks, with all the ballyhooing over the DI and such of the LT1 that were expecting closer to 500hp on the base C7 (me being one of them) that taking the track flagship and not doing something really exceptional with it in regards to hp/tq are going to be fairly dissapointed. If GM can improve the areas mentioned, as well as another 100hp+ THEN put it to the track and spank the current offerings from Mopar and Ford...that's when Jon Q. public will flock to the new Z, even those who hadn't planned on buying one previously...IMO.
01-07-2014, 09:17 PM
#51
Scraping the splitter.
Look how many people were "totally wrong" about the C7 not being a better performer than the C6. Now they're looking for excuses for being so wrong. The same thing will happen here.
Next year at this time, those of us who bought C7 Z06's will be laughing at all the same nonsense that we heard about the base C7.
S.
01-07-2014, 09:32 PM
#52
Pro
01-07-2014, 10:18 PM
#53
Melting Slicks
01-07-2014, 11:04 PM
#54
Melting Slicks
Don't know if the tires are going to be really any different since they look to be the same Pilot Sport Cups in the teaser pic. As for the other improvements you mentioned, they will make it faster for sure. I just think they will be small incremental improvements in lap times for each difference. Larger gains would come with reduced weight and a full aero package.
01-08-2014, 12:43 AM
#55
Don't know if the tires are going to be really any different since they look to be the same Pilot Sport Cups in the teaser pic. As for the other improvements you mentioned, they will make it faster for sure. I just think they will be small incremental improvements in lap times for each difference. Larger gains would come with reduced weight and a full aero package.
And by aero package...you mean big-*** wing @ back? PLEASE NO!
01-08-2014, 12:48 AM
#56
Le Mans Master
Well, not sure if that's what he meant, but from what I remember, the original HP number mentioned for the LS7 at the reveal was 500, but once they finally got it SAE certified, it was bumped up to 505.
It's possible whatever numbers are mentioned at the reveal for the LT4 will not be SAE certified yet.
Oh, and I just read the same happened for the ZL1, where final HP was ultimately bumped up to 580
Geoff
It's possible whatever numbers are mentioned at the reveal for the LT4 will not be SAE certified yet.
Oh, and I just read the same happened for the ZL1, where final HP was ultimately bumped up to 580
Geoff
01-08-2014, 12:56 AM
#57
I wouldn't even pay any attention to it.
Look how many people were "totally wrong" about the C7 not being a better performer than the C6. Now they're looking for excuses for being so wrong. The same thing will happen here.
Next year at this time, those of us who bought C7 Z06's will be laughing at all the same nonsense that we heard about the base C7.
S.
Look how many people were "totally wrong" about the C7 not being a better performer than the C6. Now they're looking for excuses for being so wrong. The same thing will happen here.
Next year at this time, those of us who bought C7 Z06's will be laughing at all the same nonsense that we heard about the base C7.
S.
Bummer! History repeats itself. You are right. We will indeed be laughing at that same nonsense. Of course..it'll be even better if I get my damn Stingray before you guys get yours Z06s....
01-08-2014, 01:18 AM
#58
Team Owner
A6 C7's have gone 11.4-11.5 at ~120 mph. Assuming the 625 hp is a real number and the car doesn't gain much (if any weight) and the 8-speed auto is offered, I think it should easily trap 130+ and see mid-10's. And it won't need 1.5's to do it, IMO.
And NHRA can run to 9.99 and 135 mph with no bar (5-point) required in a post-'08 "unaltered" and "OEM" vehicles.
S.
And NHRA can run to 9.99 and 135 mph with no bar (5-point) required in a post-'08 "unaltered" and "OEM" vehicles.
S.
Will be dam quick!Dealer mark-up will be high!
01-08-2014, 01:30 AM
#59
Team Owner
I do. Quite consistently on the race course. Have done so for over 3 years.
ALL engines suffer from heat soak. It doesn't matter how they're aspirated. What does matter is when it hits and how brutally. The ZR1 in its current form will suffer from timing retardation to protect itself when run hard in hot (95º+) temps for prolonged periods. A simple 20-minute session isn't going to be enough to do it.
Anyone that says they've seen "heat soak" at 80º is full of crap. Even after a few sessions. That is unless they were driving on the track with the A/C on; I've done that as a test and sure enough it does get the engine hot.
ALL engines suffer from heat soak. It doesn't matter how they're aspirated. What does matter is when it hits and how brutally. The ZR1 in its current form will suffer from timing retardation to protect itself when run hard in hot (95º+) temps for prolonged periods. A simple 20-minute session isn't going to be enough to do it.
Anyone that says they've seen "heat soak" at 80º is full of crap. Even after a few sessions. That is unless they were driving on the track with the A/C on; I've done that as a test and sure enough it does get the engine hot.
Plus I don't think the intercooler crumbles on stock boost!
Only when you pulley down!
01-08-2014, 02:03 AM
#60
Le Mans Master
Fact on FI is that you can never have to much intercooling, one of my cars has 2 intercoolers run in series with meth on top of that.
People who actually race cars know meth is great on its own, add a good intercooler even better.