GM - Corvette

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Chevrolet Corvette. News, pics, drives, and related news from GM. Blog & RSS feed.

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Friday, June 13, 2008  

 GM releases 2009 Chevrolet Corvette Z06 images
 

GM released these images today, although without any specs or supporting information. It is known that the dry-sump system has been improved, thanks to a hand-me-down from the new ZR1. The new color and wheels are very handsome...!

I'll have specs and other data when GM makes it available. Why it's not out yet I'm not sure... although perhaps Chevy wants to celebrate it's upcoming class win at the 24 Hours of Le Mans!







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 Corvette well-positioned to take a win at this weekends 24 Hours of Le Mans
 

The 24 Hours of Le Mans has been described as the greatest race in the world, and with 250,000 attendees it most certainly is. The Corvette - once GM became serious about sports car attributes and handling prowess - has done very well in endurance racing and has made a solid name for itself. In turn, it's helped sales of the Corvette triple internationally. I'll be watching Le Mans this weekend, as I do every year.

Reference: Official site (English): http://www.lemans.org/24heuresdumans/pages/accueil_gb.html


Corvette Racing Claims First GT1 Pole for 24 Hours of Le Mans

Magnussen Qualifies First and Gavin Takes Third in Final Qualifying Session


LE MANS, France, June 12, 2008 – Corvette Racing won the GT1 pole at the 24 Hours of Le Mans for the first time as Jan Magnussen set the pace in tonight's final qualifying session. Magnussen's 3:47.669 lap time in the No. 63 Compuware Corvette C6.R was the quickest in the GT1 division, while Oliver Gavin qualified the No. 64 Compuware Corvette C6.R third in the category at 3:48.539.

"It was a really good lap," said Magnussen. "We've hit on something good, and we just need to work on the setup in small steps."

Predictions for evening showers in the Loire Valley proved to be inaccurate, but a flurry of red flags interrupted the first hours of qualifying and practice. The first session, scheduled to run from 7 to 9 p.m., lost a total of 52 minutes to two red flags. Magnussen and Gavin both turned their fast times on their first flying laps at the start of the night qualifying session at 9:45 p.m.

"It didn't start off too well because we were all packed together," Magnussen recalled. "I thought I'd be able to pass two GT2 cars in front of me on my out lap, but I didn't catch them until Tertre Rouge on my first flyer. I lost some time on the straightaway, but just as I was starting to get angry, a prototype whipped past me. I got into his slipstream and got back all of the time I'd lost!"

Magnussen's pole-winning time was 4.461 seconds faster than the C6.R's qualifying pace in 2007. Last year the top Corvette qualified at 3:52.130, putting it third in the GT1 field.

"Winning the pole at Le Mans is historic, but at some point in time it was also inevitable," said Corvette Racing program manager Doug Fehan. "It's a testament to the team's perseverance, dedication to the mission, flawless preparation, and most of all, to GM management's belief in the value of this program. That commitment has allowed Corvette Racing to compete here at Le Mans for nine consecutive years, and that continuity is what produces success.

"The Corvettes' improvement in performance is attributable not only to the guys who work on the cars, but also the engineers who develop the chassis and aerodynamics, our partners at Michelin, and Katech, which has been our partner on engine development since the program's inception. Everybody knew they had to put their shoulder to the wheel this year. We weren't happy with the outcome last year, and I think tonight we showed just how unhappy we were."

The last time Corvette won a class pole at Le Mans was in 1976 when John Greenwood set the fast time in the IMSA class with a 3:54-second lap. Chicanes were subsequently installed on the course to slow the cars.

"It's always great fun going out there and racing against Jan, trying to put a good lap down," said Gavin. "But we're not just racing the No. 63 Corvette – there is some really strong competition here. It can't get any tighter at the top, and they are the cars that are going to be in contention for a win.

"Hats off to the crew at Corvette Racing," Gavin continued. "They've done a marvelous job of preparing the cars and finding a substantial amount of speed. Of course I'm disappointed to not be the fast qualifier, but we're going to look at the data with my engineers and see where the differences are. The car will be virtually brand new for the race."

The Le Mans regulations require that all drivers complete three laps in darkness during qualifying. After losing track time to red flags in yesterday's session, Johnny O'Connell and Olivier Beretta both completed their mandatory night qualifying laps.

"It was very important to complete three laps in darkness to qualify, and I was quite happy during my night test," said Beretta. "Jan did a very good lap, and both cars were very quick. The conditions were very good – the track was cool and clean.

"Le Mans qualifying is good for the ego, but it doesn't make the race," Beretta cautioned. "We still have 24 hours in front of us. We just have to stay cool and calm, and see what happens."

On Friday the drivers will participate in the Parade des Pilotes (drivers parade) through the streets of Le Mans while the Corvette Racing crew installs fresh LS7.R small-block V-8 engines in the Corvette C6.R race cars. The 24 Hours of Le Mans will start at 3 p.m. local time (9 a.m. EDT) on Saturday, June 14 and finish at 3 p.m. (9 a.m. EDT) on Sunday, June 15. SPEED will televise the start of the race live on June 14 from 8:30 a.m. EDT to 12 p.m. EDT, and the finish from 9 p.m. EDT on June 14 to 9:30 a.m. EDT on June 15.

24 Hours of Le Mans LM GT1 Qualifying

Pos./Car No./Drivers/Car/Time

1. (63) Fellows/O'Connell/Magnussen, Corvette C6.R, 3:47.668

2. (50) Bouchot/Bornhauser/Smet, Saleen S7R, 3:47.761

3. (64) Gavin/Beretta/Papis, Corvette C6.R, 3:48.539

4. (009) Brabham/Garcia/Turner, Aston Martin DBR9, 3:48.994

5. (007) Frentzen/Wendlinger/Piccini, Aston Martin DBR9, 3:49.060

6. (55) Kox, Rusinov/Hezemans, Lamborghini Murcielago, 3:52.175

7. (72) Alphand/Policand/Moreau, Corvette C6.R, 3:52.993

8. (59) Menten/Fittipaldi/Borcheller, Aston Martin DBR9, 3:53.031

9. (53) Negrao/Hardman/Leventis, Aston Martin DBR9, 3:53.475

10. (73) Gouselard/Blanchemain/Pasquali, Corvette C6.R, 3:55.736

CORVETTE RACING QUOTES:

Ron Fellows, No. 63 Corvette C6.R: "With this afternoon’s rain showers the track was very green again in the beginning, very slick. In the first half of the session we were still chasing the back of the car as it was still oversteering turning into he corners and in the middle of the corners. In the night session I found that the headlights were a bit off, but we’ll adjust that tomorrow. Other than that the car is just great and we’re looking good for the race."

Johnny O'Connell, No. 63 Corvette C6.R: "The first issue of the day was to get my mandatory three nighttime laps in, which was just a formality. The car now feels way, way better than yesterday, and much more stable through the Porsche Curves. It improved dramatically since yesterday, as you can tell from Jan’s time. It’s nice to have a good car going into a race like Le Mans and we honestly expect to have a very good race."

Max Papis, No. 64 Corvette C6.R: "It was a good stint, I ran seven consecutive laps in the dark. I felt we made very good progress with the car, and it's getting faster and faster. Twenty-four hours is different than making one lap. It's going to take staying out of trouble and driving super hard. Sometimes you need a little bit of luck; we didn't have much luck last year, so hopefully we'll get it all back."

General Motors Corp. (NYSE: GM), the world’s largest automaker, has been the annual global industry sales leader for 77 years. Founded in 1908, GM today employs about 266,000 people around the world. With global headquarters in Detroit, GM manufactures its cars and trucks in 35 countries. In 2007, nearly 9.37 million GM cars and trucks were sold globally under the following brands: Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, HUMMER, Opel, Pontiac, Saab, Saturn, Vauxhall and Wuling. GM’s OnStar subsidiary is the industry leader in vehicle safety, security and information services. More information on GM can be found at www.gm.com.

###


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Friday, April 25, 2008  

 ZR-1 at 205 MPH
 

It's always nice to see a manufacturer testing their performance car at the absolute limits... and holding it there.  While few people will have an opportunity to go over 200 MPH in their lifetime, this kind of testing is still very important because it shows how durable the engine, drivetrain, and especially the integrity of the aero and cooling engineering.

Even for thos eof us on conventional" racetracks, who may only hit ~150 briefly, this kind of testing ensures the car will repeatedly hit that ~150 in any kind of temperature - be it the nice cool summers of the Finger Lakes at Watkins Glen, or the blisteirng hot summers of Texas at TWS.

Kudos to GM for the engineering of the ZR-1 engine and the entire package. Especially note the two intercooler cores.

The following video was supplied by GM's new blog "GMnext": http://blog.gmnext.com/?p=133 - note the RSS subscription that is available!


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Wednesday, January 02, 2008  

 Frivolous vents - and worse
 

MSNBC this morning has an article titled "A frivolous fashion for fender vents - another automotive ornamentation is set to die away" in which they discuss the developing trend of vents on cars placed there solely for as a frivolous fashion statement. Fake or functional, they are still frivolous and the author believes these will go the way of the vinyl roof after a few years.

Follow the link above for the article.

This topic touches a nerve. I'm a driving enthusiast. That means driving, not posing. That means that form should follow function: everything should contribute to the function of the machine. So fake vents and scoops are particularly useless to me, even offensive. And frivolous vents and scoops make me question their point - even if they do pass some air, how functional are they? If they can't be quantified, then I don't want them.  In fact to me they are also offensive.

Here are three well-known examples, in order of least to most-offensive, least-to-most frivolous, but in order of most-to-least "serious drivers machine":

1. The current M3 has 3 functional vents and 1 fake (the fake left hood vent is provided solely for the sake of symmetry). But take a look at this side fender vent - just how much hot air does this actually move? Could you take a look at instrumentation and clearly determine that it drops under hood temperatures 20 degrees, or even 10? And if it did indeed perform any serious heat removal, both heat and carbon monoxide would end up in the side windows and passenger compartment.

frivolous bmw m3 vent

At least it's a little more cleanly styled than the plastic side vents of BMW's recent past.

2. Here's an example of a fake scoop on a car that is trying very hard to be serious... but having trouble shedding the baggage of it's past. Yes, folks, the Corvette Z06 hood scoop is a fake - an examination of it easily reveals that. Magazines confirm it, that is when they aren't gushing over the accelerative thrill of the 505 horses or the funny handling at the extremes. To it's credit, the 4 vents/scoops on the sides of the car (engine compartment vent, rear brake cooling scoop) are functional and yes they can be quantified. 

fake corvette z06 hood scoop

What's odd is that fake scoops were never really part of the Corvette scene. Lots of superfluous curves, bumps, pop-up lights, and leaf springs were. We're still stuck with the terrible leaf springs today, inherently variable rate and therefore in my mind the single worst feature of the current car and the leading candidate to be dropped in the upcoming all new "C7" generation. A big question for product planners is whether Corvette traditionalists would have as much of a cow over their demise as they did from the removal of the pop-up headlights in the C6.

What's new to the Corvette scene is a clear transparent window showing the engine inside of the 2009 ZR-1... or at least the flat and featureless top of the intercooler. There is zero technical detail to see thru the window. Nor is the window an original idea: Mazda used it just two years ago in the Kabura (translates to "first sword drawn in battle") concept ( http://www.drivingenthusiast.net/sec-blog/2006/01/08.html#a1165 ). And that window revealed a technically interesting view of the engine below. So the Corvette has the lead in this area now and I predict we'll see any number of transparent panels offered up front in the future, especially from the aftermarket. Of course, rear-engine exotica has offered this trick before which of course offers a truly exotic and worthwhile view to owners and enthusiasts.

3. But here's the worst example of them all - an aftermarket Mustang. You can't possibly add enough fake scoops to a late-model Mustang to satisfy the immature tastes of their owners or (more often) the wanna-bes who dream of a Mustang (when they get old enough to drive). And let me make sure that you understand that I specifically mean late-model Mustangs... the original Mustangs were true enthusiast's machines in ways we've only very rarely seen from Ford since then.

The following example is mild at only 6 fake scoops... there are far worse examples from the aftermarket. Even Ford is happy to sell you 3 fake scoops on the GT (more on the Shelby), taking what might have been a cleanly styled car and ruining it with stuck-on scoops that do absolutely nothing. Perhaps the fake hood scoop brings back memories of the old days when a scoop over the top of a carburetor was (or at least could have been, since even then most weren't) functional?

fake mustang scoops and vents

Why aren't hood scoops functional anymore? Because we don't have carburetors, and we haven't had them since the early eighties. And even when we did, the engine didn't react well to water and snow entering the filter thru large openings. Nor could it efficiently adjust it's fuel metering for the influx of cool - and different - air. So few people back then wanted the daily bother for little gain. A few of the smarter companies eventually offered two under-hood openings to the air cleaner rather than just one - and later connected them to nice cool air inside the fenders for even more gain than a hood scoop ever provided anyway (the scoop-over-carb was likely not where the best airflow was anyway). Properly designed cool air delivery also improves performance and emissions, and the practice continues today in nearly every new car on the market.

As to the other scoops on the example above, well, they are just silly. The roof vents bring back memories of a tiny set of Shelby Mustangs from the sixties where they were actually functional. They opened to release air from inside the car - very useful to evacuate what was probably cigarette smoke and also very useful to evacuate high air pressure at speed.

The lower body-side scoops go back to the original "Mustang 1" concept car of the early sixties, where they delivered air to the rear-mounted engine.

Production Mustangs since then have had fake scoops for most of their years. They might have been useful to deliver air to the rear brakes (drums originally) but they weren't ever truly functional from the factory for that or any other purpose. Sharp owners will remember that the '94-95 Mustangs actually vented air thru the rear fender scoop, near the discs, and the effect might have been quantifiable in a very small way but was dropped in late '95. The fake scoops that after that, all stuck-on, have broken lines which have otherwise become cleaner (again) over the years. And contributed to the developing kid-stuff mania which surrounds the car... making it much less desirable to serious drivers.

And I know that somebody in the Mustang aftermarket is working hard to put a fiberglass hood into production offering the combination of both fake scoops and a ZR-1 type transparent panel. We'll certainly see them well before SEMA next year.

Speaking of SEMA, here's the absolute worst thing I've sever seen. It's reason enough for real enthusiasts to never buy a late-model Mustang ever again. Everything on this monstrosity is fake - even, undoubtedly, the engine under the hood. I completely and totally condemn this POS - and I'm surprised that somebody in 'vegas didn't pull out their chrome-plated Magnum and put it out of it's misery. No matter, the first bump in the road it goes over will knock all the cheap trash off anyway.

the worst aftermarket mustang ever

This was the worst example, and the most offensive. 

So there's my rant for the first business day of the new year. Discuss via comments. 


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Saturday, November 24, 2007  

 Swaps gone wild - Corvette with 2JZ Supra engine
 

I don't know how or why there are so many available Supra twin-turbo engines… without their Supra. This time one gets transplanted into a red Corvette. In Kuwait.

2 parts to this series:

1

Builder:

2

Right turns might be a bit of an issue... see if you notice why:

The ‘vette apparently survived Saddam's invasion…. although not entirely unscathed.


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Saturday, October 27, 2007  

 GT-R versus 'vette
 

Who can't be thrilled with the GT-R?

The inevitable forum arguments have begun comparing the GT-R to the Chevrolet Corvette. I'll gladly stay out of those... I won't say that the 'vette is hobbled by it's leaf springs, or that the Z06 is well known for it's high-speed stability issues. I won't say that I hope the Corvette product planners leave all those behind in the next generation C7. I'm won't say that given the Corvette "mindset", the replacement of the leaf springs with conventional coilovers will have the traditionalists crying as they bemoaned the loss of the pop-up headlights in the C6.

So lets instead look at the specs of the GT-R, directly from Nissan, followed by a Nissan video via The Hollywood Extra.



Specifications
Engine
• VR-series twin-turbocharged 3.8-liter V6.
• 480 hp @ 6,800 rpm. 430 lb-ft torque @ 3,200–5,200 rpm.
• Dual overhead camshafts with variable intake-valve timing.
• Cast aluminum cylinder block with high-endurance/low-friction plasma-sprayed bores.
• IHI twin turbochargers, one per cylinder bank.
• Pressurized lubrication system with thermostatically controlled cooling.
Drivetrain
• ATTESA ET-S All-Wheel Drive (AWD) with independent rear-mounted transaxle integrating transmission, differential and AWD transfer case.
• Rigid, lightweight carbon-composite driveshaft between engine and transaxle.
• Electronic traction control plus 1.5-way mechanically locking rear differential.
• Vehicle Dynamics Control (VDC-R) with three driver-selectable settings: Normal (for daily driving, controls brakes and engine output), R-Mode (for ultimate performance, utilizes AWD torque distribution for additional vehicle stability) and Off (driver does not want the help of the system).
• Hill Start Assist prevents rollback when starting on an incline.
Transmission
• 6-speed Dual Clutch Transmission with three driver-selectable modes: Normal (for maximum smoothness and efficiency), Snow (for gentler starting and shifting on slippery surfaces), and R mode (for maximum performance with fastest shifts).
• Fully automatic shifting or full sequential manual control via gearshift or steering wheel-mounted paddle shifters.
• Dual clutch design changes gears in less than 0.5 second (0.2 second in R mode).
• Downshift Rev Matching (DRM).
• Predictive pre-shift control (in R mode) based on throttle position, vehicle speed, braking and other information.
Wheels and Tires
• 20 x 9.5" (front) and 20 x 10.5" (rear) super-lightweight forged-aluminum wheels with Gunmetal Gray finish.
• Exclusively developed nitrogen-filled Bridgestone® RE070A high-capacity run-flat summer tires, 255/40R20 front and 285/35R20 rear.
• Tire Pressure Monitoring System (TPMS).
• Optional exclusively developed nitrogen-filled Dunlop® run-flat all-season tires, 255/40R20 front and 285/35R20 rear (includes Bright Silver wheels).
Brakes
• Brembo® 4-wheel disc brakes with 4-wheel Antilock Braking System (ABS), Brake Assist, Electronic Brakeforce Distribution and Preview Braking.
• Two-piece floating-rotor 15-inch front and rear discs with diamond-pattern internal ventilation.
• 6-piston front/4-piston rear monoblock calipers.
Steering
• Rack-and-pinion steering with vehicle-speed-sensitive power assist.
• 2.6 steering-wheel turns lock-to-lock.
Suspension
• 4-wheel independent suspension with Bilstein® DampTronic system with three driver-selectable modes: Normal/Sport (for automatic electronic control of damping), Comfort (for maximum ride comfort), and R mode (engages maximum damping rate for high-performance cornering).
• Electronically controlled variable-rate shock absorbers. High-accuracy progressive-rate coil springs.
• Front double-wishbone/rear multi-link configuration with aluminum members and rigid aluminum subframes.
• Hollow front and rear stabilizer bars.
Body/Chassis
• Exclusive Premium Midship platform with jig-welded hybrid unibody.
• Aluminum hood, trunk and door skins. Die-cast aluminum door structures.
• Carbon-reinforced front crossmember/radiator support.
Standard Features
Exterior
• Wide-beam headlights with High Intensity Discharge (HID) low beams.
• LED taillights and brake lights.
• Dual heated power mirrors.
• Flush-mounted aluminum door handles.
• Body-color rear spoiler with integrated center high-mounted stop light.
• UV-reducing tinted glass.
Audio/Navigation/Performance Monitor
• Digital Bose® audio system with AM/FM/in-dash 6-CD changer and 11 speakers including dual subwoofers.
• HDD Music Box system, including hard drive with 9.4 GB for audio storage.
• MP3, WMA and DVD audio capable. In-dash Compact Flash card reader.
• HDD-based GPS navigation with touch screen.
• Driver-configurable performance monitor, developed with Sony® Polyphony, with graphical readouts of vehicle data and driving data displayed on a total of 11 screens.
• 7-inch WVGA high-resolution color-LCD display for audio, navigation and performance monitor.
Interior
• Automatic Temperature Control (ATC).
• Electronic analog instrument cluster with multi-function trip computer and digital gear indicator.
• Power front windows with one-touch auto-up/down feature.
• Intelligent Key system with pushbutton start. Power door locks.
• Cruise control.
• Tilt/telescoping steering column.
• Bluetooth® Hands-free phone system with voice recognition.
Seating/Appointments
• Leather upholstered front seats with perforated Alcantara inserts.
• 8-way power front seats with entry/exit switch for rear-seat passengers.
• Driver-shaped bucket seat.
• Dual individual rear seats.
• Heated front seats.
• Leather-wrapped steering wheel and shift knob.
• Drilled aluminum pedals.
Safety/Security
• Nissan Advanced Air Bag System (AABS) with dual-stage supplemental front air bags, seat belt sensors and occupant-classification sensor.
• Driver and front-passenger side-impact supplemental air bags and roof-mounted curtain supplemental air bags.
• Front seat belts with pretensioners and load limiters.
• Nissan Vehicle Immobilizer System.
• Vehicle Security System.




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