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Old 02-09-2008, 04:10 AM   #1
2KZ28CAM
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Confirmed!?!? Doubt it...but they say they heard from a third-cousin that the final numbers would be: 620hp/595tq.

And would "rocket" to 200mph. I still say 212-215 is on-tap. Therefore, could the power numbers be low, also?

http://jalopnik.com/353287/chicago-a...bers-confirmed

Hmmm.....
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Old 02-09-2008, 06:32 AM   #2
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Confirmed!?!? Doubt it...but they say they heard from a third-cousin that the final numbers would be: 620hp/595tq.

And would "rocket" to 200mph. I still say 212-215 is on-tap. Therefore, could the power numbers be low, also?

http://jalopnik.com/353287/chicago-a...bers-confirmed

Hmmm.....


This has been out here for awhile, but just a thought that nobody knows for sure....
GM 'always' underrates HP figures..........


Forget the King of the Hill. Meet the God of the Mountain
By Daniel Pund, Senior Editor, Detroit Email


Date posted: 12-19-2007


You've waited long enough to hear the real deal on the 2009 Chevrolet Corvette ZR1, right? The nonstop, server-frying deluge of speculation, hoaxes, misinformation, wild-ass guessing and publicity-stunt silliness has dragged on just short of three years now.

In anticipation of the ZR1's introduction at the 2008 Detroit auto show in January, Chevrolet at last has opened the proverbial hood on this, the most powerful, most expensive and most highly anticipated Corvette in the model's half-century history.

Here, finally, is the real story.

"Greater Than 620 Horsepower"
All right, so there's one thing that we can't put a final figure to and that's the important one: the ZR1's power output.

But Ron Meegan, the assistant chief engineer for the new 2009 Chevrolet Corvette ZR1's supercharged V8 (and formerly a member of the original ZR-1's engine team from 1990-'95), says he expects that once the new car's supercharged 6.2-liter V8 is certified, it will produce "greater than 620 horsepower at 6,500 rpm and 595 pound-feet of torque in the 3,600-to-4,000-rpm range, depending on some last-minute tuning items."

So even GM doesn't have a final power figure yet. Although you can be sure that if Meegan's superiors allowed him to mention any figure to us, they're not worried about making those numbers. Remember, when the current-generation Z06 was unveiled, it came with a claim of 500 hp, and when the production car arrived it had a rating of 505 hp.

Whether the ZR1 is rated at 625 hp or 633 hp or whatever, it won't just be the most powerful Corvette production vehicle ever (including ones measured by the grossly overstated "SAE gross" figures of pre-1972), it won't even be close. The power produced by the ZR1's LS9 engine will be roughly the equivalent of three 1980s-era Corvette small-block V8s bolted together. It'll produce more power than the Corvette C6.R that races at the 24 Hours of Le Mans.

The Nordschleife on Chrome Rims, Y'all
ZR1 chief engineer Tadge Juechter says, "If a buyer really wants them, he can get chrome wheels on it," although he's letting us know that he would never do such a thing and he thinks you shouldn't either. But the ZR1 isn't a racecar.

Juechter adds, "It's sort of like the Turbo but for less money and with performance — more like the Carrera GT."

That's big talk. But, while Chevrolet is not yet making specific performance claims, Juechter notes that the ZR1 will be faster, quicker and more responsive in every way than a Z06. "You won't see a huge difference in 0-60 mph because even the Z06 is traction-limited through most of that," he says. "But in the quarter-mile and tests from zero to 100 mph to zero, there will be big differences."

And just to up the ZR1's chest-puffing quotient, Juechter notes this car "will be able to take the production-car track record at any racetrack." Ex-squeeze me? And no, the company has not done an officially timed run at the Nürburgring yet.

As for top speed, Juechter says only that the 200-mph speedometer of the standard and Z06 Corvettes has been replaced with a 220-mph unit, because the standard one is "grossly inadequate."


And remember, Don't always believe what you read,
Didn't Mr. Lutz from GM say that the new Supercar, (now known as the ZR1),
would be 7 liters??
.

Last edited by Gohard777; 02-11-2008 at 04:42 AM.
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Old 02-09-2008, 10:36 AM   #3
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Old 03-29-2008, 10:41 PM   #4
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Old 04-06-2008, 09:39 AM   #5
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Old 04-06-2008, 01:39 PM   #6
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Hey Noob,

It was fairly easy making the decision to buy a 2006 Z006 without even sitting in it. I am not so sure with the ZR-1. Between the brake color and poor cosmetics, I do not have a great feeling about the cost to value ratio.
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Old 04-06-2008, 07:07 PM   #7
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And would "rocket" to 200mph. I still say 212-215 is on-tap. Therefore, could the power numbers be low, also?
It certainly has enough RWHP and the aeros to go well over 200 mph. What it boils down to is the gearing for top end use. I doubt GM is going to design the gearing just for ultimate top end speeds.
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Old 04-07-2008, 04:35 AM   #8
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It certainly has enough RWHP and the aeros to go well over 200 mph. What it boils down to is the gearing for top end use. I doubt GM is going to design the gearing just for ultimate top end speeds.

Well, my brother's cousin's uncle knows a guy that works for a warehouse that supplies some boxes to GM, and he said someone said that he overheard said someone in the lunchroom was saying that someone he knows that was very close to someone very high in GM, that the thing can, and will do around 212.

Good enough?

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Old 04-07-2008, 04:12 PM   #9
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Are there any Cd figures yet? I'm guessing it's a bit worse than the Z06 which is much worse than the C6.
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Old 04-07-2008, 04:57 PM   #10
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I think it's kind of cheating because it already comes with supercharger included in that 620 hp number. I like the idea that it comes supercharged but i feel it should be 720hp supercharged, especially for all that money.
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Old 04-07-2008, 10:08 PM   #11
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Originally Posted by 2KZ28CAM View Post
Well, my brother's cousin's uncle knows a guy that works for a warehouse that supplies some boxes to GM, and he said someone said that he overheard said someone in the lunchroom was saying that someone he knows that was very close to someone very high in GM, that the thing can, and will do around 212.

Good enough?
... Umm, it's no surprise to anyone who understands HP and aerodynamics that 620+ crankshaft HP in this car is easily good for over 200 MPH if the gearing is done right. The less powerful 505 HP Z06 will do 198.
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Old 04-08-2008, 03:04 AM   #12
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... Umm, it's no surprise to anyone who understands HP and aerodynamics that 620+ crankshaft HP in this car is easily good for over 200 MPH if the gearing is done right. The less powerful 505 HP Z06 will do 198.



I'd bet if they fold back the rear-view mirrors, that a short sustained burst of 215 mph is possible.

whether i am FOS or not, that is !!!
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Old 04-08-2008, 03:08 AM   #13
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I think it's kind of cheating because it already comes with supercharger included in that 620 hp number. I like the idea that it comes supercharged but i feel it should be 720hp supercharged, especially for all that money.

Preachin' to the choir, my friend! I wish they'd at least put 640-660+ at the crank. Since the SC LS9 could probably sustain 680+ without MAJOR reliability issues, I say, why NOT!?!?!?!?
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Old 04-08-2008, 06:56 AM   #14
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It certainly has enough RWHP and the aeros to go well over 200 mph. What it boils down to is the gearing for top end use. I doubt GM is going to design the gearing just for ultimate top end speeds.

Ultimate top end speeds..no.

I remember reading an article/interview posted on here that 6th gear will be useable for top speed.
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Old 04-18-2008, 08:14 PM   #15
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With all that said does anyone know how much SAE allows for a percentage of error. I thought I once read that it has to be whithin 5% up ot down. Obviously GM could underrate the ZR1 by 31hp if that is the case.
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Old 04-29-2008, 06:15 AM   #16
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Well, it took an extremely long time, but GM came through again for us.
I hope now that you don't believe everything that you read from these guys...
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Old 04-29-2008, 06:27 AM   #17
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Preachin' to the choir, my friend! I wish they'd at least put 640-660+ at the crank. Since the SC LS9 could probably sustain 680+ without MAJOR reliability issues, I say, why NOT!?!?!?!?
Quote:
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Well, it took an extremely long time, but GM came through again for us.
I hope now that you don't believe everything that you read from these guys...
638 is pretty close to 640. Now, if only the top speed runs (207 unconfirmed as of now) could get closer to the 210-212 MPH "we" thought it might hit - a long, long time ago.

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Old 04-29-2008, 06:31 AM   #18
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638 is pretty close to 640. Now, if only the top speed runs (207 unconfirmed as of now) could get closer to the 210-212 MPH "we" thought it might hit - a long, long time ago.


We were told that it should do that with no problem,
but I could be wrong, I was 3 HP off on the numbers so I'll probably be castrated....your friend....bob.
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Old 04-29-2008, 06:31 AM
 
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