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Full Test: 2008 Chevrolet Corvette

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    It simply don't get no more American than a candy-apple red Corvette. | September 15, 2009

Road Test

Full Test: 2008 Chevrolet Corvette

It's Not a Halo, but the '08 Corvette Is Divine in Its Own Way

    1 Rating
    With all the feverish excitement surrounding the Corvette Z06 and the absurdly powerful Corvette ZR1, you'd almost believe that the standard Corvette had virtually ceased to exist.

    Indeed, it has not. And the 2008 Chevrolet Corvette we've just tested proves that while the standard Vette might sit in the shadow cast by its more publicity-friendly brethren, it has received something more valuable than media attention: performance.

    We're going to run as many stories as we can about those two crazy-fast Corvette specials once they appear. But this page is devoted to the decidedly less sexy world of continuous improvement — the year-to-year ministrations that keep the Corvette viable. After all, there would be no Z06 and certainly no ZR1 without the standard car.

    And considering that Chevy sells roughly one Corvette for every 10 Accords that Honda sells (and 10 times the number of S-Types that Jaguar sells), we're talking about a pretty impressive automobile.

    Small Block, No Extra Charge
    And there would be no Corvette without the small-block V8. True, there have been moments of great embarrassment in the long history of the Corvette and its pushrod V8. There was the disgraceful 1970s small-block that wheezed out a total of 165 horsepower. And all by itself, the 1982 Corvette V8 represents some kind of low.

    Yet aside from these instances plus the occasional sniping from those who insist on having cams on top of their valves, the small-block Chevy V8 has been the Corvette's greatest asset. And what an asset that motor has become in the form of the new-for-2008 LS3. Bored out to 6.2 liters (from last year's 6.0), the new-generation Corvette engine pumps out a rousing 430 hp at 5,900 rpm. That's 30 hp more than last year. Just as important, the new motor churns up 424 pound-feet of torque at 4,600 rpm — 24 lb-ft more than the LS2.

    This 6.2-liter V8 constitutes the basis of the large explosive device called the LS9, which will power the forthcoming Corvette ZR1 with more than 600 hp. It's a sturdy, thick-wall block, nicely suited to the supercharging that will vault the ZR1 over the 600-hp barrier. But there we go talking about the ZR1 again.

    There are a lot of good pieces from a lot of good Chevy V8s in the new LS3 V8. The cylinder heads are similar to the heavy breathers from the Z06's LS7 motor. Its high-flow fuel injectors are straight from the 505-hp LS7. For good measure, Chevrolet has also added an intake manifold that flows more air and then rammed in a high-lift cam to actuate intake valves that are 9 percent larger in diameter (2.2 inches vs. 2.0 inches). The result is a "standard" engine that makes 25 more horses than the most powerful power plant of the last-generation Z06.

    As we measured on the test track, some worthwhile side effects include a 4.5-second run to 60 mph and a quarter-mile pass of 12.8 seconds at 114.8 mph. And this car won't quit until you reach 190 mph. It simply humiliates would-be rivals. All right, "humiliate" might be too strong. But this Vette is slightly quicker to 60 mph and through the quarter-mile than a Porsche 911 Carrera S. It's also quicker than a Ford Shelby GT500, a Nissan 350Z and the last-generation Z06.

    It's Servo-rific!
    Part of the secret of excellent performance lies in our test car's horsepower and torque figures. The standard Vette is available with an optional two-mode exhaust system that premiered on the current-generation Z06. The 2.5-inch-diameter exhaust has two outlet valves (one for each side of the exhaust system). Under normal operation, the valves are closed to control the level of exhaust noise. Under high throttle loads, though, the valves open and let the small-block roar.

    This LS3 might not have the hellacious rip of the Z06 engine's high-revving, large-displacement V8, but it sounds loud and unapologetic, just as a V8 should. A further description of the noise we cannot provide, as we were usually looking well down the road for cops or cranking in a little countersteer at those moments when the exhaust note got good and tasty.

    Oh, and this $1,195 option liberates an additional 6 horses and 4 lb-ft of torque. It's well worth the money (certainly when it's your money and not ours) for the exhaust sound alone. Plus the little control arms that operate the exhaust flaps are clearly visible at the back of the car. And that's just cool. And they're a lot cooler than the so-yesterday polished wheels that were also on our test car and cost $1,295 more than the less flash-and-trash standard wheels. (Attention GM: Corvette guys aren't into chest hair and medallions anymore, so let's lose the chrome.)

    Shift_
    Honestly, the thing we like most about the new Vette compared to any previous Corvette is the shift lever. Our car came equipped with the Z51 Performance Package and it featured a standard six-speed manual transmission that does not actively try to discourage you from shifting.

    It's fair to say the former Tremec six-speed transaxle (remember, it's behind you, where's it's integrated with the rear-end gears to help deliver better weight distribution) proved recalcitrant at best. The old six-speed had the same kind of shift action that you'd expect in some kind of big old lever in a railway switchyard. It would do the trick, but it wasn't going to be easy and it wasn't going to be fun.

    This new unit feels like the precision-built piece of machinery we've always expected from a Corvette but never got. Its slick action proved to be such a pleasure that we sometimes shifted a gear when there was no compelling reason to do so.

    Another aspect of the $1,695 Z51 package that enhances this car's forward progress is the use of shorter ratios for the transmission's first four gears. The additional speed is nicely complemented by stiffer suspension rates, high-performance tires and drilled brake rotors. Make sure you check off the Z51 option box when you order your Corvette.

    Some Other Things That Move
    Chevy also claims that it has made some improvements to the Corvette's steering system, which we've always felt to be a consistent weak point. And though it's been a little while since we last spun the steering wheel of a Corvette C6, we suppose this one feels better.

    Specifically, Chevy says that more precise machining of internal components, a stiffer intermediate shaft and calibration changes have unlocked a big box of "feel," that most esoteric of dynamic traits. Sure, OK. Maybe it is better.

    But the Corvette still has some room for improvement here compared to the likes of a car like the Porsche 911. Though maybe it's not quite fair to compare two cars with engines at opposite ends, it's fair to say that a lack of steering crispness is one of the prime reasons that a Corvette has always seemed like such a large and unwieldy car when you're behind the steering wheel. And this impression continues in the C6, despite its reasonably trim dimensions (shorter in overall length than a 911) and admirably low curb weight (3,272 pounds).

    Shiny Bits
    Corvettes have taken some justified knocks for their interior quality over the years — or rather the lack of it. And the big news for 2008 is an optional leather-wrapped interior package. Our car was not equipped with it, but did feature the shiny "bright surrounds" for the shift lever and cupholder and a nicer-looking center stack. All things considered, it looks fine. Our only real problem with the interior is the flimsy feel of the seats and the shockingly short seat cushions. A Corvette must have great seats, even as just an option or something.

    Also, we were surprised to find that the Corvette has a heated cupholder. This is the Vette's one similarity to the regrettable Chrysler Sebring. Then we realized it was simply the heat radiating up from the transmission tunnel. Think of the cupholders as passively heated. So remember to wedge your Frosty between your thighs in the time-honored fashion. (Later, we realized our luggage had been nicely heated as well.)

    Initially the 2008 C6's translucent plastic roof looked a little disco to us. But once we figured out it was easier to look through the roof at stoplights than to strain our necks to look at them through the low windshield, we liked it just fine. Of course the blue-tinted roof also makes you feel as if you live in a plastic bottle of soda, and who wouldn't pay $750 for that? We mean, other than us.

    Wedges Never Go Out of Style, Girl
    Aside from its new wheel designs, the exterior of the 2008 Chevrolet Corvette is identical to previous model years of the C6. A sharper, trimmer version of the soft form created with the C5, the shape of the new car is wearing surprisingly well with us. Certainly, no one will mistake this pointy-nosed, flat-butted sportster for anything but a Corvette.

    And such consistency of design character nicely telegraphs the consistency of the driving experience. Each new generation of the Corvette — heck, each new year of the car in this case — further refines the basic Vette driving formula: half powersliding hooligan ride and half genuine sports car. And certainly the '08 improvements justify the $1,035 increase in the car's base price.

    And now back to nonstop coverage of the Z06 and the super-double-throwdown Corvette ZR1 motivated by a force roughly equal to the output of a nuclear power plant. Thanks for listening.

    The manufacturer provided Edmunds this vehicle for the purposes of evaluation.

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    Speed Read

    Featured Specs

    • 436-hp 6.2-liter V8
    • Shiny interior bits
    • Dual-mode exhaust system

    What Works

    Magnificent engine note; a shifter that doesn't hate to be shifted; commendably lightweight.

    What Needs Work

    Steering could still use more feel; drives like a bigger car than it is; translucent top makes you feel like you're driving a plastic soda bottle.

    Tags

    Specs & Performance

    Vehicle
    MakeChevrolet
    ModelCorvette
    Model year2008
    Style2dr Hatchback (6.2L 8cyl 6M)
    Base MSRP$46,110
    As-tested MSRP$56,300
    Options on test vehicleDual-Mode Performance Exhaust, Crystal Red Metallic Tint-coat Paint, Coupe Preferred Equipment Group , Performance Handling Package, Transparent Removable Roof Panel, Polished Alloy Wheels
    Drive typeRear-wheel drive
    Transmission type6-speed manual
    Transmission and axle ratios (x:1)I = 2.97; II = 2.07; III = 1.43; IV = 1.00; V = 0.71; VI = 0.57; R = 3.28; Diff = 3.42
    Engine typeV8 (LS3)
    Displacement (cc/cu-in)6,162cc (376 cu-in)
    Block/head materialCast aluminum/cast aluminum
    ValvetrainOverhead valve, 2 valves per cylinder
    Compression ratio (x:1)10.7
    Redline (rpm)6,500 rpm
    Horsepower (hp @ rpm)436 @ 5,900
    Torque (lb-ft @ rpm)428 @ 4,600
    Brakes, frontVentilated/drilled disc
    Brakes, rearVentilated/drilled disc
    Steering typeSpeed-proportional power steering
    Steering ratio (x:1)16.1:1
    Suspension, frontIndependent, double wishbones, leaf springs and stabilizer bar
    Suspension, rearIndependent, double wishbones, leaf springs and stabilizer bar
    Tire size, frontP245/40ZR18 88Y
    Tire size, rearP285/35ZR19 90Y
    Tire brandGoodyear
    Tire modelEagle F1 Supercar EMT
    Tire typePerformance run-flat
    Wheel size18-by-8.5 front -- 19-by-10.0 rear
    Wheel materialPolished alloy
    Curb weight, mfr. claim (lbs.)3,217
    Curb weight, as-tested (lbs.)3,272
    Weight distribution, F/R (%)52/48
    Fuel typePremium unleaded
    Fuel tank capacity (gal)18.0
    EPA fuel economy (mpg)16 city/26 highway
    Edmunds observed (mpg)Not available
    Conditions for Testing
    Temperature (°F)58.2
    Elevation (ft.)421
    Wind (mph, direction)7
    Performance
    0 - 30 (sec.)2.2
    0 - 45 (sec.)3.2
    0 - 60 (sec.)4.5
    0 - 75 (sec.)6.2
    1/4 mile (sec. @ mph)12.8 @ 114.9
    30 - 0 (ft.)28
    60 - 0 (ft.)118
    Braking ratingVery Good
    Slalom, 6 x 100 ft (mph)69.2
    Skid pad, 200 ft diameter (lateral g).95
    Handling ratingVery Good
    Sound level @ idle (db)60.5
    Sound level @ full throttle (db)88.2
    Sound level @ 70 mph cruise (db)71.1
    Acceleration commentsThis thing has torque and horsepower everywhere, as it could easily spin the tires all the way through 1st gear and even leaves a couple strips in 2nd gear. The shifter is way better at finding 3rd gear in a hurry than it once was. It's no Porsche 911 flick, but I could palm it like I never could before. While I didn't care for the high pedal engagement of the clutch in "civilian use," it worked very well on the drag strip. And OMG, what a sound that V8 makes under load and it even spits and burbles when you get off the throttle. Cool and oh-so Vette.
    Braking commentsI expected shorter distances from a car weighing a mere 3,272 pounds with big rubber track shoes. While 118 feet is excellent and repeated on the fifth run, these brakes don't elicit the kind of hackneyed "retina-detaching" comments some other purebred sports cars do. Even though the measured distances didn't grow by the last stop, the ABS pulses began to be less frequent, indicating some heat was affecting the effectiveness of the brakes.
    Handling commentsGobs of grip around the skid pad and a little more feel in the steering weight than I have grown to expect. What once was a springy, artificial weight now has more to do with what the front tires are doing. The balance is so neutral that I could choose to either under- or oversteer the car all the way around the circle. Even so, I'd prefer more predictability to how and when it lets go. Once it starts to rotate, the driver needs to be way ahead of it -- otherwise, there's no catching the inevitable spin that will occur. In the slalom, the Corvette tends to pile on oversteer with each successive cone. That's fine if you're ready for it, but that's not a very confidence-building trait. Corvettes have never "liked" the slalom test and the quickest way through was with all systems off, as it allows a pretty crazy yaw angle through the final gate (which competitive mode does not). However, on one 10/10ths run, I managed a rare slow-motion three-quarter spin off the tarmac because I let it go too far sideways and it wouldn't recover. The Corvette remains entertaining but not record-breaking, nor for the amateur driver to attempt without the safety net of stability control.
    Specifications
    Length (in.)174.6
    Width (in.)72.6
    Height (in.)49.0
    Wheelbase (in.)105.7
    Front Track (in.)62.1
    Rear Track (in.)60.7
    Turning circle (ft)39
    Legroom, front (in.)43.1
    Headroom, front (in.)37.9
    Shoulder room, front (in.)55.2
    Seating capacity2
    Cargo volume (cu-ft)22.4
    Max. cargo volume, seats folded (cu-ft)N/A
    Warranty Information
    Bumper-to-bumper3 years/36,000 miles
    Powertrain5 years/100,000 miles
    Corrosion6 years/100,000 miles
    Roadside assistance5 years/100,000 miles
    Scheduled maintenanceN/A
    Safety Information
    Front airbagsStandard
    Side airbagsOptional side airbags
    Head airbagsNot available
    Knee airbagsNot available
    Antilock brakes4-wheel ABS
    Electronic brake enhancementsElectronic brakeforce distribution
    Traction controlStandard
    Stability controlStandard
    Rollover protectionNot available
    Tire-pressure monitoring systemStandard tire-pressure monitoring
    Emergency assistance systemNot available
    NHTSA crash test, driverNot Tested
    NHTSA crash test, passengerNot Tested
    NHTSA crash test, side frontNot Tested
    NHTSA crash test, side rearNot Tested
    NHTSA rollover resistanceNot Tested
    CollapseSpecs and Performance Expand Collapse

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