Hail to the King - Corvette ZR1 Certified at 638HP, 604ft-lbs & 205MPH

Discussion in 'OT Driven' started by TriShield, Apr 25, 2008.

  1. TriShield

    TriShield Super Moderator® Super Moderator

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    CHEVROLET ANNOUCES CERTIFIED POWER RATINGS FOR THE NEW CHEVROLET CORVETTE ZR1: 638 HP FROM THE SUPERCHARGED LS9 V-8

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    glen5839's next avatar?

    PONTIAC, Mich. – When it was introduced at the North American International Auto Show in Detroit earlier this year, the 2009 Chevrolet Corvette ZR1's power was estimated at 100 horsepower for each of its 6.2 liters of displacement. GM Powertrain has completed SAE certification of the ZR1's supercharged LS9 V-8 and the results exceed the estimate: 638 horsepower (476 kW) and 604 lb.-ft. of torque (819 Nm).]

    The LS9's output is nearly 103 horses per liter, or just about 1.7 horses for each of the engine's 376 cubic inches. It is unquestionably the most powerful automotive production engine ever manufactured by General Motors and enables the Corvette ZR1 to achieve a top speed of more than 200 mph (322 km/h).

    "One of the most amazing things about the Corvette ZR1 is the level of refinement that our designers and engineers have attained. Even with all that power, this car has road manners that will allow our customers to enjoy it on the streets as a daily driver, and on the track," said Chevrolet General Manager Ed Peper.

    The Corvette ZR1 goes on sale this summer. Its 638-hp supercharged engine is complemented in the chassis by heavy-duty components not offered in any other model, including a six-speed manual transmission with race-hardened gears and dual-disc clutch technology that delivers exceptional clamping power and lower inertia, as well as strengthened axle components.

    Fuel economy testing has not been completed, but engineers are confident the ZR1 will be the most fuel-efficient 600-plus-horsepower car on the market.

    The LS9 engine is hand-built by specially trained technicians at GM's Performance Build Center in Wixom, Mich. It is a unique, small-volume engine production facility that also builds the Chevrolet Corvette Z06's LS7 engine and other high-performance GM production engines.

    "Developing the LS9 involved more than simply striving for a great horsepower number. Endurance and reliability testing have shown the engine to be robust and low-maintenance, just like other engines in the small-block family," said Sam Winegarden, executive director, engine engineering for GM Powertrain. "That it is distinguished as the most powerful engine ever from General Motors is a source of immense pride among everyone involved with the LS9."

    Supercharged aspiration

    The key enabler of the LS9's performance is the industry's first production application of a new, positive-displacement Roots-type supercharger that has a unique four-lobe rotor design. Its design promotes quieter and more efficient performance, while the large, 2.3-liter displacement ensures adequate air volume at high rpm. Maximum boost pressure is 10.5 psi (0.72 bar). It is teamed with an integrated charge cooling system that reduces inlet air temperature for maximum performance.

    "The combination of large displacement and the new, four-rotor design broadens the effective range of the supercharger, allowing the engine to make more power at lower rpm and sustain it throughout the power band," said Winegarden. "The low-end torque is tremendous and the high-rpm charge from the supercharger is simply amazing."

    A raised hood provides adequate clearance for the LS9, while a polycarbonate window in the hood provides a view of the engine beneath it.

    LS9 details

    The LS9 features many unique design and manufacturing details that support its high-performance nature. They include:

    Aluminum cylinder block with iron cylinder liners that are finish-bored and honed with a deck plate installed
    Forged steel crankshaft with a nine-bolt flange
    Titanium connecting rods and forged aluminum pistons
    Stronger, rotocast cylinder heads with 2.16-inch (55 mm) titanium intake valves and 1.59-inch (40.4 mm) hollow-stem, sodium-filled exhaust valves
    Camshaft with 0.555-inch (14.1 mm) lift for excellent idle and low-speed driving qualities
    A dry-sump oiling system with 10.5-quart (9.9 liters) capacity
    Integrated oil cooler and piston-cooling oil squirters

    Specifications

    LS9 6.2L SUPERCHARGED V-8

    Displacement (cu in / cc): 376 / 6162
    Bore & stroke (in / mm): 4.06 x 3.62 / 103.25 x 92
    Block material: cast aluminum
    Cylinder head material: A356-T6 rotocast aluminum
    Valvetrain: overhead valve, 2 valves per cylinder
    Fuel delivery: SFI (sequential fuel injection)
    Compression ratio: 9.1:1
    Horsepower / kW: 638 / 476 @ 6500 rpm
    Torque (lb-ft / Nm): 604 / 819 @ 3800 rpm
    Fuel shut-off (rpm): 6600
    Recommended fuel: premium required
    Exhaust manifolds: stainless steel
    Main bearing caps: forged steel
    Crankshaft: forged steel
    Camshaft:n hollow steel; 0.555-in (14.1 mm) lift
    Connecting rods: forged titanium
    Valves:
    intake: titanium
    exhaust: hollow steel
    Valve lifters: hydraulic roller
    Supercharger: R2300, four-lobe "Roots" type (2.3L)
    Additional features: piston oil-spray cooling; direct-mount ignition coils; 11-rib accessory drive

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    New Corvette ZR1 Tops Out at 205 MPH

    By: Tadge J. Juechter
    Corvette Chief Engineer
    2008-April-25

    I know many of you are interested in the latest details on the new Corvette ZR1. We’ve been working on the car for a while now and recently, we decided to put the pedal to the metal and see just how fast it could go.

    On a cool day with light wind in early April, the Corvette Development Engineering team took it to the test track in Papenburg, Germany. The ZR1, with its 638 horsepower supercharged LS9 V-8 engine, clocked in at a staggering 205 miles an hour (330 km/h). We’re thrilled with the results and excited for it to hit the streets. We even brought a camera along for the ride to document our experience. Check out the video posted below.

    http://www.brightcove.tv/title.jsp?title=1519677836

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  2. TriShield

    TriShield Super Moderator® Super Moderator

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    2009 Chevrolet Corvette ZR1: 638 Freakin' Horsepower

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    Date posted: 01-01-3000
    www.edmunds.com

    DETROIT — The 2009 Chevrolet Corvette ZR1, which will go on sale this fall for around $100,000, will pack 638 horsepower.

    That makes the ZR1 easily the most powerful vehicle General Motors has ever produced and puts the king of Corvettes into a mighty exclusive club. The ZR1 essentially matches the output of the Lamborghini Murcielago LP640 and trails the extra-extreme limited-edition Ferrari Enzo by only a smidge. Perhaps, just as important to Chevrolet, is that the ZR1 brings 38 hp more to the American-car smackdown than the new Dodge Viper.

    And at an estimated weight of 3,350 pounds, each of the ZR1's horses will have only 5.25 pounds of Vette to carry around. That weight-to-power ratio is closer to the Enzo (5 pounds) than the Viper (5.75 pounds). The Murcielago LP640 saddles each of its horses with almost 6.5 pounds. The ZR1's hp peak comes at 6,500 rpm. Its torque peak of 604 pound-feet comes at a low 3,800 rpm. Passing should not present a problem in the ZR1.

    When it was unveiled at the 2008 Detroit Auto Show, General Motors estimated that the supercharged, 6.2-liter LS9 V8 would make at least 620 hp. The company has learned a thing or two about under-promising and over-delivering. The LS9 is a strengthened version of the tried-and-true small-block pushrod design, with an Eaton TVS (four-lobe) Roots-type supercharger and twin intercooler unit crammed in the V. Maximum boost is set at 10.5 psi and all of the engine's internals have been upgraded to more robust and/or lightweight parts, including a forged steel crank, titanium connecting rods and forged aluminum pistons. It's fitted with a dry sump oil system and is mated to a stout six-speed manual through a twin-disc clutch.

    In the most curious press release line we've read in some time, Chevrolet claims the ZR1 will be the most fuel-efficient 600-plus-hp car on the market today. Um, OK. Guess those upcoming CAFE standards have GM really spooked. In related news: My great grandmother won the national nursing home ultimate fighting championship.

    What this means to you: With the Viper on the chopping block and the Ford GT but a memory, the Corvette ZR1 will be the undisputed king of American sports cars. — Daniel Pund, Senior Editor, Detroit
     
  3. Toke

    Toke New Member

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    Awesome. I was hoping(and maybe it still is) that it would be underrated. Also, in before GTR trolls.
     
  4. Toke

    Toke New Member

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  5. art_VW_shark

    art_VW_shark OT Supporter

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  6. cctyler

    cctyler Mornin'

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  7. TriShield

    TriShield Super Moderator® Super Moderator

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    2009 Chevrolet Corvette ZR1 Goes 205 mph-Plus!

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    Date posted: 04-25-2008
    www.edmunds.com

    PAPENBURG, Germany — Close on the heels of announcing its official 638-horsepower rating, GM released a video of the 2009 Chevrolet Corvette ZR1 making a certified 205-mph top-speed run in Papenburg, Germany.

    Luke Sewell, a powertrain engineer on the Corvette platform team, told Inside Line that Patrick Herrmann, a European engineer, was behind the wheel during the top-speed run. Sewell says Herrmann isn't part of the Corvette team, but that he's certified to drive the ATP Papenburg course.

    Sewell said he himself spent time in the 2009 ZR1's right seat during the testing, and that the vehicle used was an "integration" vehicle, a mule, that was different from a production car only in that it was equipped with a roll cage and instrumentation for monitoring speed, cooling temps and such.

    The Corvette team performed at least nine runs, testing various small changes in terms of coolant "content." The 205 number is an average of runs in both directions (to cancel out the effect of wind). As if 205 mph isn't enough to set your hair on fire, Sewell says the ZR1 topped out at 208 mph with a tailwind. After close scrutiny of the video, we're confident the readout hits at least 207 mph around the 1:30 mark. Unfortunately, the certification process uses the average of multiple runs, so 208 is not the final quotable figure.

    Chevy first performed Corvette ZR1 top-speed testing at its proving grounds in Milford, Michigan but the track there was not long enough, and there wasn't enough banking in the turns to maintain a high enough speed. GM also top-speeded the Z06 at Papenburg before it was introduced.

    As for occasional traffic on the Papenburg circuit, Sewell says the track is rented to whoever wants it, which is why you see another car and a semitruck on the track at different times during the 1-minute, 54-second video that was shot in early April.

    "Things are a little different in Europe. Here we'd close down the whole thing for a top-speed run," says Sewell.

    How was it to see that semi looming in the distance, we ask? "Definitely interesting," says Sewell.

    What this means to you: They had us at 205.
     
  8. Wonder Showzen

    Wonder Showzen Domeshotter

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    Fell in love with this car the first time i saw it in a magazine.
     
  9. art_VW_shark

    art_VW_shark OT Supporter

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    heh. Dunno about god; you hear a great sounding blown V8. God's vocal cords were tuned in Bavaria ;)
     
  10. 04JETTA

    04JETTA OT Supporter

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  11. 04JETTA

    04JETTA OT Supporter

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    :bowrofl:
     
  12. Rich

    Rich New Member

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    My dream car.
     
  13. SilverTurtle

    SilverTurtle New Member

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    my new goal is to own one of these monsters :drool:
     
  14. Mr3GTP

    Mr3GTP OT Supporter

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    Bullshit; the LSx motors shit on Bavaria. ;)
     
  15. Run N. Gun

    Run N. Gun Active Member

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    That's pure sex, right there! Thx for posting, TriShield!
     
  16. Mr3GTP

    Mr3GTP OT Supporter

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    Too heavy.


    Aveo swap ftw! :cool:
     
  17. sactomkiii

    sactomkiii New Member

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    on that note imagine a ls9 sky :naughty:
     
  18. DrK_Mrk_iV

    DrK_Mrk_iV OT Supporter

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    Cool. Too bad the interior is still going to look like ass.
     
  19. PanzerAce

    PanzerAce Active Member

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    So......anyone want to crash one so I can drop it into my Z? :naughty:
     
  20. art_VW_shark

    art_VW_shark OT Supporter

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    o rly?
     
  21. Mr3GTP

    Mr3GTP OT Supporter

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  22. Mitchj

    Mitchj OT Supporter

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  23. you know me

    you know me OT where the douchbags play

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    no, not really.













    I hope this car sounds closer to the ZR-1 sound then the lsx sound
     
  24. monaroCountry

    monaroCountry New Member

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    Curb weight (full gas tank and all fluids) 3324 lbs
    Dry weight 3155 lbs

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    Last edited: Apr 27, 2008
  25. Captain Jack

    Captain Jack I know I know nothing

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    Full interior redo needed ASAFP.
     

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