2009 Corvette ZR1 620 bhp

[Lextreme II]

Just got my Auto Week this week and noticed this 100 bhp per liter rocket with 600 lb-ft of torques from the all new 6.2L aluminum block LS9 V8. This engine also got an upgrade 12 mm head bolts vs. LS7 got 10 mm along with piston-cooling oil squirters. Pistons are forged with Eaton Root-Type supercharger. Price.... 100 to 150K and the car will sit of 20s with curb weight around 3350 lbs. This rocket is predicted to do 0-60 in less then 3.5 seconds and top out at around 205 mph. This turn key factory car will hit 11 seconds in 1/4 mile.

This is a limited production of 200 cars per year so line up guys.

 

[Treynon]

If I remember correctly I think I saw twin screw supercharger rotors not eaton roots in a magazine article. The tolerances looked to be too close for an eaton.

 

[Treynon]

plus I wouldn't pay 100k+ for a car with a roots charger over a PD charger.

 

[turbosix]

Just got my Auto Week this week and noticed this 100 bhp per liter rocket with 600 lb-ft of torques from the all new 6.2L aluminum block LS9 V8. This engine also got an upgrade 12 mm head bolts vs. LS7 got 10 mm along with piston-cooling oil squirters. Pistons are forged with Eaton Root-Type supercharger. Price.... 100 to 150K and the car will sit of 20s with curb weight around 3350 lbs. This rocket is predicted to do 0-60 in less then 3.5 seconds and top out at around 205 mph. This turn key factory car will hit 11 seconds in 1/4 mile.

This is a limited production of 200 cars per year so line up guys.

dude the z06 are high 10 second cars bone stock...

620hp is estimated, they havent released exact figures. the z06 alread hits 60 in 3.5s.... GM says this will do it in the very low 3s...

 

[turbosix]

lets see if this copy paste works:

Corvette ZR1

December 20th 2007 05:30

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Chevrolet has officially announced the arrival of the Corvette ZR1 supercar - a new high performance vehicle based on the C6 Corvette - for 2009.

Powered by an all-new LS9 supercharged 6.2-litre V8 that produces at least 462kW (620hp) and approximately 823Nm of torque (595 lb.-ft.), the ZR1 will produce at least 100 hp per litre - the benchmark figure for performance vehicles.

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Offering almost carbon-fibre everything - bonnet, roof panel, roof bow, front fascia splitter and rocker moldings - the power-to-weight ratio of the ZR1 will be nothing short of exceptional and should better the likes of Porsche's 911 GT2, Ferrari 599 GTB Fiorano and Lamborghini Murcielago LP640.

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The Official Chevrolet Press Release:

CHEVROLET ENTERS THE WORLD OF SUPERCARS WITH 2009 CORVETTE ZR1
New, Supercharged LS9 V-8 is the Heart of the ZR1

DETROIT - Chevrolet officially announced the 2009 Corvette ZR1 - an American supercar that brings the technology and engineering refinement of carbon-fiber, ceramics and electronics together in a distinctive design.

“Chevrolet’s goal with the new ZR1 is to show what an American supercar can deliver, at a price that trumps exotics that cost two, three or four times as much - and does so with exceptional driveability,” said Ed Peper, Chevrolet general manager.

The ZR1’s basic stats:

-All-new LS9 supercharged 6.2L V-8 targeted at producing at least 100 horsepower per liter, or 620 horsepower (462 kW), and approximately 595 lb.-ft. of torque (823 Nm)
- Six-speed, close-ratio, race-hardened manual transmission
- New, high-capacity dual-disc clutch
- Higher-capacity and specific-diameter axle half-shafts; enhanced torque tube
- Specific suspension tuning provides more than 1g cornering grip
- Twenty-spoke 19-inch front and 20-inch rear wheels
- Michelin Pilot Sport 2 tires - P285/30ZR19 in front and P335/25ZR20 in the rear - developed specifically for the ZR1
- Standard carbon-ceramic, drilled disc brake rotors - 15.5-inch-diameter (394-mm) in the front and 15-inch-diameter (380-mm) in the rear
- Larger brake calipers with substantially increased pad area
- Standard Magnetic Selective Ride Control with track-level suspension
- Wider, carbon-fiber front fenders with ZR1-specific dual vents
- Carbon-fiber hood with a raised, polycarbonate window - offering a view of the intercooler below it
- Carbon-fiber roof panel, roof bow, front fascia splitter and rocker moldings with clear-coated, exposed carbon-fiber weave
- ZR1-specific full-width rear spoiler with raised outboard sections
- Specific gauge cluster with boost gauge (also displayed on the head-up display) and 220-mph (370 km/h) speedometer readout
- Only two options: chrome wheels and a “luxury” package
- Curb weight of approximately 3,350 pounds (1,519 kg)

The specialized components of the new ZR1 work harmoniously to deliver the most powerful and fastest automobile ever produced by General Motors. Performance estimates will be announced closer to vehicle’s summer 2008 launch.

“Preliminary testing shows the ZR1 builds on the highly respected Corvette Z06 in every performance category, from acceleration and braking, to cornering grip and top speed,” said Peper. “It all boils down to the power-to-weight ratio and the ZR1’s is exceptional - better than the Porsche 911 GT2, the Ferrari 599 and even the Lamborghini LP640. In fact, the ZR1 is expected to be the first production Corvette to achieve a top speed of at least 200 mph.”

Supercharged LS9 engine

The new LS9 6.2L small-block engine is the power plant the supports the ZR1’s performance capability. The enabler of the LS9’s performance and refinement is a large, positive-displacement Roots-type supercharger with a new, four-lobe rotor design. It is augmented with an integrated charge cooling system that reduces inlet air temperature for maximum performance.

A sixth-generation supercharger developed by Eaton helps the LS9 make big power and torque at lower rpm and carries it in a wide arc to 6,600 rpm, as it pushes enough air to help the engine maintain power through the upper levels of the rpm band - the area where supercharged performance tends to diminish. Heavy-duty and lightweight reciprocating components enable the engine’s confident high-rpm performance.

The LS9 is hand-assembled at GM’s Performance Build Center, in Wixom, Mich., and incorporates specialty processes typically seen in racing engines to produce a highly refined and precise product. For example, cast iron cylinder liners are inserted in the aluminum block and are finish-bored and honed with a deck plate installed. The deck plate simulates the pressure and minute dimensional variances applied to the block when the cylinder heads are installed, ensuring a higher degree of accuracy that promotes maximum cylinder head sealing, piston ring fit and overall engine performance.

Transmission and axle

The LS9 engine is backed by a new, stronger six-speed manual transmission and a twin-disc clutch that provide exceptional clamping power, while maintaining an easy clutch effort. ZR1-specific gearing in the transmission provides a steep first-gear ratio that helps launch the car, and top speed is achieved in sixth gear - a change from the fifth-gear top-speed run-outs in the manual-transmission Corvette and Corvette Z06.

As the term implies, the twin-disc clutch system employs a pair of discs, which spreads out the engine’s torque load over a wider area. This enables tremendous clamping power when the clutch is engaged, while also helping to dissipate heat better and extend the life of the clutch.

The twin-disc clutch system also contributes to the ZR1’s exceptional driving quality, with smooth and easy shifting. The twin-disc system’s design enables a 25-percent reduction in inertia, thanks to smaller, 260-mm plates, corresponding to a pedal effort that is similar to the Corvette Z06’s 290-mm single-disc system.

The rear axle also is stronger in the ZR1 and features asymmetrical axle-shaft diameters that were developed after careful testing to provide optimal torque management. The axles are also mounted on a more horizontal plane that correlates with the wider width of the rear wheels and tires.

Ride and handling

The ZR1 is built on the same aluminum-intensive chassis as the Corvette Z06 and features similar independent SLA front and rear suspensions, with aluminum upper and lower control arms. Where the ZR1 differs is the suspension tuning, which was optimized for the car’s steamroller-wide front and rear tires.

Magnetic Selective Ride Control is standard and tuned specifically for the ZR1. The system’s ability to deliver a compliant ride with nearly instantaneous damping adjustments enabled engineers to develop a surprisingly supple ride quality in a supercar that still delivers cornering grip of more than 1g.

From a high-performance perspective, Magnetic Selective Ride Control helps the rear axle remain planted during launch for smooth, hop-free acceleration. It also helps suppress axle movement when cornering on broken or uneven pavement.

 

[turbosix]

Brakes, wheels and tires

Commensurate with the ZR1’s engine output is the braking system, which is headlined by carbon-ceramic brake rotors. Found on only a few exotics and more expensive supercars, carbon-ceramic brake rotors are made of a carbon-fiber-reinforced ceramic silicon carbide material . Their advantage comes in low mass and resistance to wear and heat. In fact, the rotors should never show any corrosion or require replacement for the life of the vehicle, when used in normal driving.

The vented and cross-drilled rotors on the ZR1 measure 15.5 inches (394 mm) in diameter in the front and 15 inches (380 mm) in diameter in the rear - making them among the largest carbon-ceramic rotors available on any production vehicle.

Clamping down on the high-tech rotors are six-piston front calipers and four-piston rear calipers, each painted a ZR1-exclusive blue. The front pads are equivalent in size to the largest on any production car with a single-pad design - double that of the Corvette Z06’s 70-sq.-cm. front pads.

The brakes are visible through the ZR1’s exclusive wheels: 20-spoke alloy rims that measure 19 inches in diameter in the front and 20 inches in the rear. They come standard with a bright, Sterling Silver paint finish and chrome versions are optional. The wheels are wrapped in Michelin Pilot Sport 2 tires developed specifically for the ZR1, measuring P285/30ZR19 in front and P335/25ZR20 in the rear.

Exclusive exterior

The ZR1 is instantly recognizable, with perhaps the most identifiable feature a raised, all-carbon-fiber hood that incorporates a clear, polycarbonate window. The window provides a view of the top of the engine’s intercooler, with the legend “LS9 SUPERCHARGED” embossed on the left and right sides, and an engine cover with the Corvette crossed flags logo debossed at the front.

The underside of the hood has an exposed carbon-fiber-weave. Exposed carbon-fiber is used on the roof, roof bow, rocker molding and front splitter. These exterior components are protected by a specially developed glossy, UV-resistant clear coat that resists yellowing and wear.

Widened, carbon-fiber front fenders with specific, dual lower vents, and a full-width, body-color rear spoiler incorporating the center high-mounted stop lamp, are also unique to the ZR1. All of the exterior features of the car were developed to enhance high-speed stability and driver control.

Interior details

The ZR1’s interior builds on the brand’s dual-cockpit heritage, with high-quality materials, craftsmanship and functionality that support the premium-quality experience promised by the car’s performance. The ZR1’s cabin differs from the Corvette and Corvette Z06 with the following:

- ZR1-logo sill plates
- ZR1-logo headrest embroidery
- Specific gauge cluster with “ZR1″ logo on the tachometer and a 220-mph (370 km/h) readout on the speedometer
- Boost gauge added to the instrument cluster and Head-Up Display

The “base” ZR1 (RPO 1LZ) comes with accoutrements based on the Z06, including lightweight seats and lightweight content. The uplevel interior package includes unique, power-adjustable and leather-trimmed sport seats (embroidered with the ZR1 logo); custom, leather-wrapped interior available in four colors; navigation system, Bluetooth connectivity and more.

By the numbers

In addition to the exterior cues and powertrain, ZR1 models will be distinguished from other Corvette models by their VIN. Each will carry a unique, identifying VIN digit, as well as a sequential build number. This makes it easy to determine the build number of a specific car - information treasured by enthusiasts and collectors. For example, a ZR1 with a VIN ending in “0150″ would indicate it is the 150 th ZR1 built for the model year.

 

[Treynon]

Chevy... cmon why not a whipple??? cheap bastards.

 

[turbosix]

Chevy... cmon why not a whipple??? cheap bastards.

what an ignorant statement.

They started with turbochargers for efficiency's sake, but switched to supercharging when Eaton unveiled its latest four-lobe Roots-type blower. This new unit boasts thermal efficiency of nearly 76 percent (up from some 60 in the best three-lobe blowers) -- near turbo efficiency with no lag.

not to mention the thing has enzo front brakes on the rear and FXX front brakes on the front.

cheap bastards? give me a fucking break.

 

[Treynon]

Why is it ignorant? You don't think they had a board meeting in Chevy and said hey we could save X amount of dollars using this charger vs the next? Anyways.. Believe what you want but I think chevy cuts a lot of corners to make their profit margin larger. You using the word "fucking" to describe things is immature. Thanks for the attack.

 

[Treynon]

The fact they use enzo brakes is exactly my point. Tell me that eaton superchargers are the best of the best in the supercharger market and I'll eat my words. They use one really good thing and mix it with something that they can save money on.

 

[SuperRunner]

Nice looking car, and it sure will be fast no doubt about that......BUT........


Boasting about 100hp/liter on a FI engine? C'mon, that is nothing to be proud of. What DOESN'T make 100hp/liter or close to it on FI.

Still, 600bhp on any stock car is AWSOME!!!

Any why on earth is it still PUSHROD?

 

[JustenGT8]

Nice looking car, and it sure will be fast no doubt about that......BUT........


Boasting about 100hp/liter on a FI engine? C'mon, that is nothing to be proud of. What DOESN'T make 100hp/liter or close to it on FI.

Still, 600bhp on any stock car is AWSOME!!!

Any why on earth is it still PUSHROD?

LOL excellent points If it made 100hp/litre n/a i'd be impressed. My humble internally stock $800AUD UZ makes over 150hp/litre

Nice car but nothing amazing in terms of engineering...just more of the same

 

[Treynon]

That's basically my view. It is nothing special to me. If it floats your boat then cool. If that makes me ignorant then cool. I was just pointing out my opinion on the subject and you can agree or disagree. I have a personal vendetta against GM for laying off my uncle so maybe that adds to my bias.

 

[jibbby]

It floats my boat and yes 100hp/liter is nothing special, however, you just don't see large sized 7.4 liter motors in sportscars like these (reffering to the Z06's) This ZR1 gets it done too.. That's alot of liters so it makes it special in my book..... If you've never seen one launch in person then you don't know what you are missing... They are fat looking and have fantastic power thru all the gears so what more can you ask for?.. I am sure with a few additional mods you can really trick these cars out and make them untouchable...

Dear Santa can I have one for Christmas, please?

 

[turbosix]

Any why on earth is it still PUSHROD?

the most powerful and reliable motors in the world are pushrod, why not?

you realize the overhead cam design is OLDER than pushrods, right?

 

[turbosix]

The fact they use enzo brakes is exactly my point. Tell me that eaton superchargers are the best of the best in the supercharger market and I'll eat my words. They use one really good thing and mix it with something that they can save money on.

exactly your point? what?

not to mention the eaton is a brand new design used exclusively on the ZR1, so you cant compare it to the other OEM eatons on the market.


and yes, you're right. your bias shows.


next thing you'll bitch about is the interior, right?

 

[turbosix]

Why is it ignorant? You don't think they had a board meeting in Chevy and said hey we could save X amount of dollars using this charger vs the next? Anyways.. Believe what you want but I think chevy cuts a lot of corners to make their profit margin larger. You using the word "fucking" to describe things is immature. Thanks for the attack.

no, not really. not to mention you dont know how much it cost them to get eaton to design a new blower, now do you? who says a whipple would have been more expensive? you have NO idea... just throwing out baseless statements.

if you'd actually read an article about this car, it wasnt even going to exist until some guys got together and said "hmm.. how far can we go?"

and to the 100hp/litre guys..

this thing has a warranty. it'll make 620+hp 365 days a year and if it breaks GM's powertrain warranty is.. what.. 10yr/100,000mi?

 

[SuperRunner]

the most powerful and reliable motors in the world are pushrod, why not?

you realize the overhead cam design is OLDER than pushrods, right?

Do you understand fluid dynamics?

What pushrod motor is both MOST powerful and reilable, that isn't at least TWICE the size of the biggest DOHC.

 

[SuperRunner]

the most powerful and reliable motors in the world are pushrod, why not?

you realize the overhead cam design is OLDER than pushrods, right?

Do you understand fluid dynamics?

What pushrod motor is both MOST powerful and reilable, that isn't at least TWICE the size of the biggest DOHC.

 

[SuperRunner]

and to the 100hp/litre guys..

this thing has a warranty. it'll make 620+hp 365 days a year and if it breaks GM's powertrain warranty is.. what.. 10yr/100,000mi?

Its about time. The old trannys can't even take the HP of the Supra trannys have been able to from almost 15 years ago. As for a 6.0L engine taking that wohoo, that is a challange! Again, there have been cars that have more than 100hp/liter for 20+years, just smaller motors. and have full warranty's. Stock supra drivetrain can handle 620hp+ no problem, for YEARS!!!!!!