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  1. #1
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    Comparing two of 2015's best driver's cars - Chevrolet Camaro Z/28 versus the Porsche 911 (991) GT3

    Before we even get started someone is likely to pipe up and state these cars have two vastly different price points. That is definitely correct, they do. The 2015 911 GT3 is almost twice the price of the Chevrolet Camaro Z/28 at its $145,785 as tested price point.

    Click here to enlarge

    The 911 GT3 is no Porsche bargain. So what? The Chevrolet Camaro Z/28 at $75,000 is no Chevrolet or Camaro bargain for that matter. These are naturally aspirated rear wheel drive track cars designed around the driving experience that go about their business in very different ways.

    The 911 GT3 has a direct injected 3.8 liter flat-6 that revs to an incredible 9000 rpm. It is rated at 475 horsepower and 324 lb-ft of torque. The Camaro Z/28 has the venerable LS7 7.0 liter V8 that revs to 7000 rpm, is port injected, and quite possibly is the greatest interpretation of the modern Chevy small block V8.

    The fact the GT3 gets within 30 horsepower of the 7.0 liter V8 is incredible. Its torque output does not get close to the LS7 however as its 324 lb-ft is 157 lb-ft less. It also moves just over 600 pounds less of car and has an efficient dual clutch transmission.

    As we learned already earlier this month from MotorTrend the 991 GT3 is very quick despite its relatively small naturally aspirated six-cylinder. It runs the 1/4 mile a full second faster than the Camaro at 11.3 seconds and its trap speed of 122.9 is significantly higher than the 116.1 of the Z/28. Double the money better have the GT3 doing something better.

    The Z/28 is heavier, slower, and more nose heavy obviously. It handles incredibly well for what it is pulling 1.08g on the skidpad and managing the MotorTrend figure eight in 23.6 seconds. The GT3 is able to surpass all of these figures though.

    It results in a better laptime as it gets around Willow Springs 2.5 seconds quicker than the Z/28. So in every measurable aspect the 911 GT3 is the superior performance car.

    The Z/28 does have some things going for it though. It offers far greater bang for the buck and a manual transmission which the GT3 does not. If you want the closest driver interaction out of the two your car may actually be the Z/28. It is hard to ignore what a precision instrument the 911 GT3 is though and how it is able to extract so much from its design. Truly a testament to German engineering.

    These are two spectacular cars however you slice it and it is a shame they are a dying breed. MotorTrend believes Chevy could learn a thing or two from Porsche about producing a track car. Well, if the GT3 meets the Corvette Z06 rather than the Camaro Z/28 that statement may quickly end up being reversed.

    Click here to enlarge



    2015 Chevrolet Camaro Z/28 2015 Porsche 911 GT3
    POWERTRAIN/CHASSIS
    DRIVETRAIN LAYOUT Front-engine, RWD Rear-engine, RWD
    ENGINE TYPE 90-deg V-8, aluminum block/heads Flat-6, alum block/heads
    VALVETRAIN OHV, 2 valves/cyl DOHC, 4 valves/cyl
    DISPLACEMENT 427.6 cu in/7,008 cc 231.9 cu in/3,800 cc
    COMPRESSION RATIO 11.0:1 12.9:1
    POWER (SAE NET) 505 hp* @ 6,100 rpm 475 hp @ 8,250 rpm
    TORQUE (SAE NET) 481 lb-ft* @ 4,800 rpm 324 lb-ft @ 6,250 rpm
    REDLINE 7,000 rpm 9,000 rpm
    WEIGHT TO POWER 7.7 lb/hp 6.9 lb/hp
    TRANSMISSION 6-speed manual 7-speed twin-clutch auto
    AXLE/FINAL-DRIVE RATIO 3.91:1/2.46:1 3.97:1/3.33:1
    SUSPENSION, FRONT; REAR Struts, coil springs, anti-roll bar; multilink, coil springs, anti-roll bar Struts, coil springs, adj shocks, anti-roll bar; multi-link, coil springs, adj shocks, anti-roll bar
    STEERING RATIO 16.1:1 13.1-17.2:1
    TURNS LOCK-TO-LOCK 2.5 2.5
    BRAKES, F;R 15.5-in vented, drilled, carbon-ceramic disc; 15.3-in vented, drilled, carbon-ceramic disc, ABS 16.1-in vented, drilled carbon-ceramic disc; 15.4-in vented, drilled carbon-ceramic disc, ABS
    WHEELS, F;R 11.0 x 19-in; 11.5 x 19-in, forged aluminum 9.0 x 20-in; 12.0 x 20-in forged aluminum
    TIRES, F;R 305/30R19 102Y Pirelli P Zero Trofeo R 245/35R20 91Y; 305/30R20 105Y Michelin Pilot Sport Cup 2
    DIMENSIONS
    WHEELBASE 112.3 in 96.5 in
    TRACK, F/R 66.1/64.7 in 61.0/61.2 in
    LENGTH x WIDTH x HEIGHT 192.3 x 76.9 x 52.4 in 178.9 x 72.9 x 50.0 in
    TURNING CIRCLE 39.0 ft 36.4 ft
    CURB WEIGHT 3,882 lb 3,267 lb
    WEIGHT DIST., F/R 53/47% 40/60%
    SEATING CAPACITY 4 2
    HEADROOM, F/R 37.4/35.3 in 37.8/- in
    LEGROOM, F/R 42.4/29.9 in 66.7/- in
    SHOULDER ROOM, F/R 56.9/42.5 in 53.4/- in
    CARGO VOLUME 11.3 cu ft 4.4 (fr) 9.2 (rr) cu ft
    TEST DATA
    ACCELERATION TO MPH
    0-30 1.6 sec 1.2 sec
    0-40 2.3 1.7
    0-50 3.0 2.4
    0-60 4.0 3.1
    0-70 4.9 4.0
    0-80 6.2 5.0
    0-90 7.5 6.2
    0-100 9.0 7.5
    PASSING, 45-65 MPH 1.8 1.5
    QUARTER MILE 12.3 sec @ 116.1 mph 11.3 sec @ 122.9 mph
    BRAKING, 60-0 MPH 100 ft 98 ft
    LATERAL ACCELERATION 1.08 g (avg) 1.11 g (avg)
    MT FIGURE EIGHT 23.6 sec @ 0.89 g (avg) 22.8 sec @ 0.96 g (avg)
    2.42-MI ROAD COURSE LAP 89.72 sec 87.22 sec
    TOP-GEAR REVS @ 60 MPH 1,500 rpm 2,500 rpm
    CONSUMER INFO
    BASE PRICE $75,000 $132,395
    PRICE AS TESTED $76,150 $145,785
    STABILITY/TRACTION CONTROL Yes/Yes Yes/Yes
    AIRBAGS Dual front, front side, f/r rear curtain Dual front, front side, front head
    BASIC WARRANTY 3 yrs/36,000 miles 4 yrs/50,000 miles
    POWERTRAIN WARRANTY 5 yrs/100,000 miles 4 yrs/50,000 miles
    ROADSIDE ASSISTANCE 5 yrs/100,000 miles 4 yrs/50,000 miles
    FUEL CAPACITY 19.0 gal 16.9 gal
    EPA CITY/HWY/COMB ECON 13/19/15 mpg 15/20/17 mpg
    ENERGY CONS., CITY/HWY 259/177 kW-hrs/100 miles 225/169 kW-hrs/100 miles
    CO2 EMISSIONS, COMB 1.28 lb/mile 1.15 lb/mile
    RECOMMENDED FUEL Unleaded premium Unleaded premium
    *SAE certified



  2. #2
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    About what you would expect. 2.5 seconds is a sizable gap, but it should be for the price differential.

    Both are awesome cars, although entirely different in execution. GT3 is still the ultimate giant-slayer and all around bargain...if I recall they said that there's only 2 cars they've tested faster around that circuit and it's the Z06 and the 918. So, not bad for a 130k car that will likely last a very long long time and can easily be daily driven if you've got the spine for it.

  3. #3
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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    About what you would expect. 2.5 seconds is a sizable gap, but it should be for the price differential.
    Let's not forget Chevy is using the damn Camaro chassis.

    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    Both are awesome cars, although entirely different in execution. GT3 is still the ultimate giant-slayer and all around bargain...if I recall they said that there's only 2 cars they've tested faster around that circuit and it's the Z06 and the 918. So, not bad for a 130k car that will likely last a very long long time and can easily be daily driven if you've got the spine for it.
    The GT3 is no bargain. $150k? It better whoop ass. But it will get its ass whooped by a Z06 won't it? Who really is the giant slayer?

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    Z06, for sure. But it's still a Corvette...and there's been some talk of heat-soak issues. It's still a more brute-force car than the GT3, much heavier and a bit more of a muscle car. Which, for some, is a huge plus. Not really my style, but to each their own. I mean, either way...if you can get $1 million hypercar performance for less than a quarter million in a decent factory vehicle, I feel that's impressive no matter what it is.

  5. #5
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    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    But it's still a Corvette...and there's been some talk of heat-soak issues.
    There are heat soak issues. But... so? Upgrade the cooling and go nuts on the track with 650 lb-ft of torque basically instantly available.

    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    t's still a more brute-force car than the GT3, much heavier and a bit more of a muscle car.
    Definitely will concede this point in the context of the GT3. The GT3 is more of a finesse object.

    Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
    if you can get $1 million hypercar performance for less than a quarter million in a decent factory vehicle, I feel that's impressive no matter what it is.
    It's for sure impressive and the GT3 is my personal favorite 911 without a doubt. I mean if someone chooses a Turbo over this I already know what they value in a car and what to them is impressive engineering. The 911 GT3 is the pinnacle of the 911 range and exactly what a 911 should be. I'd sooner take the Turbo out of the lineup than this car.

  6. #6
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    Did they test the Viper on this track? I want to see how it stacks up against the Z06's time.

  7. #7
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    I'm sure the Z06 and Viper comparisons are going to start flooding in soon.

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