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    William Maley

    2019 Chevrolet Corvette ZR1 Arrives With 755 Horsepower

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      And for something mad from Chevrolet!


    After countless months of speculation, spy photos, and someone leaking out the cover of this month's Car and Driver, Chevrolet has revealed the 2019 Corvette ZR1. This is the maddest Corvette that Chevrolet has ever built.

    Beginning under the hood, the ZR1 packs an LT5 V8 engine. While carrying the same name as the engine found in the original ZR-1, the new ZR1 skips the dual-overhead cams found in the original LT5. Instead, Corvette engineers took the supercharged 6.2L V8 found in the Z06 and installed a larger Eaton supercharger that pumps in 52 percent more air into the engine. The LT5 also features direct and port fuel injection, upgraded crankshaft, dry sump lubrication, and a 4-inch throttle body (the largest ever fitted to a Corvette). The end result is action with 755 horsepower and 715 pound-feet of torque. Chevrolet is keeping quiet the 0-60 mph time, but did say the ZR1 can reach a top speed of 210 mph.

    Like the Z06, the ZR1 will be available with the choice of a seven-speed manual or eight-speed automatic. According to a report from Automobile, engineers tried to fit GM's new ten-speed automatic into the ZR1 but couldn't due to packaging issues with the Corvette's architecture.

    Polarizing is the best way to describe the Corvette ZR1's styling, especially in the front with large air ducts. This is to help maximize cooling with each duct featuring a radiator and intercooler. The front fenders are slightly wider to make space for wider tires. Unlike the previous ZR1 with a window on the hood showing off the supercharger assembly, the new model makes do with a carbon fiber “halo” hood featuring vents and a shaker piece covering the supercharger.

    The ZR1 shown in the photos provided by Chevrolet features the optional ZTK performance package which comes with an adjustable high-wing kit, front splitter with carbon-fiber end caps, Michelin Pilot Sport Cup 2 tires, and special tuning for the chassis and magnetic ride control system. The large rear wing is said to provide 60 percent more downforce than the Z06 with the optional Z07 package. The standard ZR1 sticks with a fixed, low wing that is said to deliver the highest top speed.

    Those wanting to stand out further with their ZR1 can order the Sebring Orange Design Package. It includes a Sebring Orange Tintcoat for the exterior, brake calipers finished in orange, rocker panels and splitter featuring orange stripes; orange seatbelts and stitching for the interior; and bronze aluminum trim.

    The Corvette ZR1 arrives at dealers next spring. No word on pricing, but we wouldn't be shocked if it begins over $100,000.

    Source: Chevrolet
    Press Release is on Page 2




    2019 CORVETTE ZR1: RETURN OF THE KING

    • The fastest, most powerful production Corvette ever retakes its supercar crown

    DUBAI — The King is returning, stronger than ever.

    Chevrolet today introduced the 2019 Corvette ZR1, a supercar that pushes Corvette’s performance legacy with the highest power, greatest track performance and most advanced technology in its production history.

    “I’ve never driven a Corvette like this before, and nobody else has either, because there’s never been one like this before,” said Mark Reuss, executive vice president, Global Product Development, Purchasing and Supply Chain. “Its unprecedented performance puts all other global supercars on notice that the ZR1 is back.”

    The Corvette ZR1’s exclusive LT5 supercharged engine, which is rated at an SAE-certified 755 horsepower (563 kW) and 715 lb-ft of torque (969 Nm), is establishing a new benchmark in performance. Further, the ZR1 elevates Corvette’s track capability with two wind tunnel-honed aerodynamics packages, including an available High Wing that provides an estimated 950 pounds of downforce.

    Most powerful ever

    The ZR1’s LT5 6.2L V-8 engine advances Corvette’s supercharging legacy, which began with the 2009 sixth-generation ZR1 and continued with the 2015 seventh-generation Z06. The LT5 delivers the highest output ever for a Chevrolet production vehicle, thanks in part to a new, more-efficient intercooled supercharger system that offers 52 percent more displacement than the Z06’s LT4 supercharger. GM’s first dual-fuel-injection system, which employs primary direct injection and supplemental port injection, helps the LT5 achieve its record output.

    Seven-speed manual and eight-speed paddle-shift automatic transmissions are available with the LT5. It’s the first time an automatic transmission has been offered in a ZR1.

    Fastest ever

    The 2019 Corvette ZR1’s aggressive appearance is driven by function, contributing to its distinction as the fastest production Corvette to date.

    An all-new front fascia is designed to channel air for propulsion-system and drivetrain cooling, with four new radiators bringing the heat-exchanger total to 13. A special carbon-fiber “halo” hood is open in the middle to clear the LT5 engine’s supercharger/intercooler assembly. Additional features, including aero packages with stanchion-mounted wings, help push the ZR1 harder onto the track for more confident handling and faster lap times. Top speed of the ZR1 is over 210 mph.

    “As the highest-performing Corvette ever, the ZR1’s design supports its capability in every way,” said Kirk Bennion, Exterior Design manager. “The new wings, for example, help generate more downforce without adding drag, enhancing road holding and top speed.”

    The ZR1 will offer two aero packages: a standard rear Low Wing, which delivers the highest top speed and helps generate up to 70 percent more downforce than the Z06’s base aero package, and an available two-way-adjustable High Wing that offers maximum downforce on the track for the quickest lap times — about 60 percent more downforce than the Z06 with the available Z07 Performance Package. All models also feature a Chevrolet-first, downforce-enhancing front underwing.

    The adjustable High Wing is part of the new ZTK Performance Package, which also includes a front splitter with carbon-fiber end caps, Michelin Pilot Sport Cup 2 summer-only tires, and specific chassis and Magnetic Ride Control tuning for greater cornering grip.

    Both of the ZR1’s wings are tied into the chassis, like the Corvette Racing C7.R racecar, for strength and stability.

    Sebring Orange Design Package

    The Corvette ZR1 introduced today also debuted a dynamic, available Sebring Orange Design Package. Centered on its Sebring Orange Tintcoat exterior color, the package also includes orange brake calipers, orange rocker and splitter accent stripes, orange seat belts, orange interior stitching and unique, bronze aluminum interior trim.

    The new design package complements the Corvette ZR1’s tradition of offering maximum performance with refinement and design distinction. The driver-focused, well-appointed cockpit includes standard leather-trimmed seats, with sueded microfiber inserts offered. Heated and vented Napa leather-trimmed seating is also available, as well as a carbon fiber-rimmed steering wheel, competition sport seats, Performance Data Recorder, Bose premium audio system and more.

    The 2019 Corvette ZR1 goes on sale next spring, poised to take on the world’s best.

    It’s good to be the King.

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    Amazing power, styling looks a bit too fast and furious or cartoony with the big wing.  But the C7 overall isn't one of the better looking Corvettes.

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    13 minutes ago, smk4565 said:

    Amazing power, styling looks a bit too fast and furious or cartoony with the big wing.  But the C7 overall isn't one of the better looking Corvettes.

    So, if I read that correctly what you are saying is, rice is not your preferred flavor.:P

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    I like boyracer styling.  Functional or not. It just has to look good to...me.

    This latest generation ZR-1.

    It WILL have great performance. No doubt about that.

    210 mph. Not too shabby for a front engined (far back as possible making the Vette mid-engined?) and rear wheel drive.  755 horsepower is why...I guess. And lots of air work and air flow and air passing and downforce.

    Which leads me to talk about the looks of it.

    Its OK. Not mind blowing. I like it. I just prefer the Z06 Z07 C7R package more.

    I find that the on the C7 Vette, my boyracer acceptance is limited to the Z06 Z07 C7R package.

    In yellow over orange...

    Corvette.jpg

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    Love the look of this corvette in that gun metal grey color or what ever Chevy is calling it. One question is how is this not pedestrian friendly? They say it cannot be sold in Europe cause the front end is not pedestrian safe. The black grill reminds me of the Italian super cars, either the lambo or ferrari, cannot remember which right now, but it looks good.

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    20 minutes ago, dfelt said:

    Love the look of this corvette in that gun metal grey color or what ever Chevy is calling it. One question is how is this not pedestrian friendly? They say it cannot be sold in Europe cause the front end is not pedestrian safe. The black grill reminds me of the Italian super cars, either the lambo or ferrari, cannot remember which right now, but it looks good.

    I think this paragraph from Car and Driver has your answer,

    Quote

    Stay home from Europe, that is. Forgoing European sales and ignoring the Continent’s rulebook meant not having to meet its stringent pedestrian-protection regulations. In Europe, the head of anybody who steps in front of a moving car is entitled to smash through a minimum amount of (relatively) soft material and space before contacting hard engine parts such as intake manifolds, superchargers, or intercooler bricks. Here in the U.S.A., we have thicker skulls—perhaps related to an above-global-average dairy intake—and our regulators will let you bonk your noggin on an engine that sticks up through the hood. The largest chunk of that carbon-fiber strip running down the center of the ZR1’s nose is, in fact, the intercooler cover. As Juechter describes it: “You’ve got no air gap between the engine and the hood, you’ve got no hood blanket, you’ve got no construction between the hood inner and outer. All that stuff usually stacks on top [of the engine], but we consumed all of that and then let the engine crawl out another inch, inch and a half.” Adds Bennion: “It was a challenge to get that hood right. It could get real backwoods on you real fast.”

     

     

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    2 minutes ago, William Maley said:

    I think this paragraph from Car and Driver has your answer,

     

    Thank you, I read it but just zoned on realizing they want a cover over the engine to supposedly protect the pedestrians. Crazy stupid I think, but OK, it is socialist Europe.

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    Somehow I feel like this version of the Corvette ZR1 is kinda like the iPhone 8 Plus. Super powerful guts, expected pack leading performance on most general benchmarks used against peer and above competition, but tried and true styling from the past several years.

    The real Corvette we're all supposedly waiting for is the 2020(?) mid-engine one? Is that going to be the Corvette version of the iPhone 10? 

    Okay, stupid analogy aside... it's probably going to tear apart anything it competes against on power and performance. 

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    4 minutes ago, Suaviloquent said:

    Somehow I feel like this version of the Corvette ZR1 is kinda like the iPhone 8 Plus. Super powerful guts, expected pack leading performance on most general benchmarks used against peer and above competition, but tried and true styling from the past several years.

    The real Corvette we're all supposedly waiting for is the 2020(?) mid-engine one? Is that going to be the Corvette version of the iPhone 10? 

    Okay, stupid analogy aside... it's probably going to tear apart anything it competes against on power and performance. 

    I can see what you mean, after all why buy the Ford GT when you can have two of these for the price of one GT. So under powered compared to this.

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    15 minutes ago, dfelt said:

    Thank you, I read it but just zoned on realizing they want a cover over the engine to supposedly protect the pedestrians. Crazy stupid I think, but OK, it is socialist Europe.

    No, EU pedestrian impact rules require a crush zone for the hood.  Problem is the hood bulge would be so big (like an outlaw scoop) it would cut into driver visibility...

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    Look man, part of the GT's price is it's history and heritage. And you can bet that the person who bought a GT can and most likely will get some kind of modern Corvette too.

    Plus it's MADE IN CANADA quality, which you can't get in the United States....

    Well....duhhh...stupid point aside,

    The cars compete on performance but much less elsewhere. The GT also can't really perform much better than it can because of homologation issues, and how strictly they had to match the production and race car to optimize the GTE race car. Which of course was BP'd to hell in it's second year of Ford's leg in the LE MANS because no one would want to watch 4 straight years of Ford using a dedicated car to win it's class. The same class which is filled with cars that aren't devoted to solely exist to win there and sell very low volumes as an uncompromising and rather uncomfortable supercar.

    The GT has intangible value, hard to assess, different person to person. This Corvette may have some bench stats to read off a list somewhere, but that's again value for dollar, which is immaterial once you start getting higher and higher into six figures. 

    • Haha 1

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    Love the power.. but I'm sitting this one out til the Mid-Engine arrives. IF anything I would get a used Z06. 755HP is awesome.. but in the wrong hands WOW. The Demon for instance will kill someone I guarantee within weeks of it hitting the market. I believe that this having 755HP is essentially the equivalent of the Dodge in the fact that this is 1000lbs lighter and has GM engineering

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    19 hours ago, smk4565 said:

    Amazing power, styling looks a bit too fast and furious or cartoony with the big wing.  But the C7 overall isn't one of the better looking Corvettes.

    How do you feel about the boy racer spoiler on this?

     

    5F41D6E8-999B-49EE-80BD-53111E07889E.jpeg

    Edited by surreal1272

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    2 minutes ago, surreal1272 said:

    How do you feel about the boy racer spoiler on this?

     

    5F41D6E8-999B-49EE-80BD-53111E07889E.jpeg

    That spoiler is waaaay less boy-racer, imo.  One the driver looks over when looking out the back and the other the driver looks under when looking out the back. Solid, non-adjustable vs adjustable and the overall shape of the AMG's is cleaner and simpler than the ZR1's. 

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    35 minutes ago, surreal1272 said:

    How do you feel about the boy racer spoiler on this?

     

    5F41D6E8-999B-49EE-80BD-53111E07889E.jpeg

    I don’t, I would take a GT S over a GT R but I would take an SL over a GT also.   But that wing doesn’t look as tacky as the ZR1’s.

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    47 minutes ago, smk4565 said:

    I don’t, I would take a GT S over a GT R but I would take an SL over a GT also.   But that wing doesn’t look as tacky as the ZR1’s.

    Benz bias kicking in there because it looks every bit as “tacky” as the Vette, which is pulled almost straight off of the racing Vette. 

    1 hour ago, ccap41 said:

    That spoiler is waaaay less boy-racer, imo.  One the driver looks over when looking out the back and the other the driver looks under when looking out the back. Solid, non-adjustable vs adjustable and the overall shape of the AMG's is cleaner and simpler than the ZR1's. 

    See my above response and add this. The green model does not have an adjustable spoiler but this one does. 

     

    378445EA-16FC-4871-87CE-0F97AFCA5C70.jpeg

    Edited by surreal1272

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    23 minutes ago, surreal1272 said:

    Benz bias kicking in there because it looks every bit as “tacky” as the Vette, which is pulled almost straight off of the racing Vette. 

    See my above response and add this. The green model does not have an adjustable spoiler but this one does. 

     

    378445EA-16FC-4871-87CE-0F97AFCA5C70.jpeg

    Definitely not pulled straight off the C7R, they're both raised but that's about all the similarities. 

    That wing on the yellow car looks terrible. That's itty bitty and looks awkward, like it doesn't belong. 

    It isn't Benz bias, its just that one is a cleaner and more subtle design than the other(at least for me). The whole AMG GT lineup is a much cleaner look than the Vette. 

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    47 minutes ago, ccap41 said:

    Definitely not pulled straight off the C7R, they're both raised but that's about all the similarities. 

    That wing on the yellow car looks terrible. That's itty bitty and looks awkward, like it doesn't belong. 

    It isn't Benz bias, its just that one is a cleaner and more subtle design than the other(at least for me). The whole AMG GT lineup is a much cleaner look than the Vette. 

    The bias was not for you and looks part is purely subjective since they are two totally different cars in two different price brackets. I’m not crazy about the spoiler but it does serve a function and the rest of the car looks sharp to me as opposed to the stretched out 911 profile of the Benz. Just my opinion though. 

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      Additional Technology Highlights
      Variable geometry turbocharging enables the Duramax 3.0L engine to deliver class-leading horsepower with minimal effect on overall efficiency. The system uses closed loop controlled vanes position and sophisticated electronic controls to automatically adjust boost pressure to the desired value based on engine running conditions and instantaneous power demand. The liquid-cooled turbocharger features a low-friction ball-bearing shaft and is mounted close to the exhaust outlet of the engine for quicker spool-up of the turbine and quicker light-off of the exhaust catalyst. A water-to-air intercooling system produces a cooler higher density air charge for greater power. Maximum boost pressure is 43,5 psi (300 Kpa) absolute.
      Low-pressure EGR: The Duramax 3.0L utilizes new low-pressure Exhaust Gas Recirculation to optimize performance and efficiency. The EGR system diverts some of the engine-out exhaust gas and mixes it back into the fresh intake air stream, which is drawn into the cylinder head for combustion. That lowers combustion temperatures and rates.
      Traditionally, EGR systems in diesel applications recirculate exhaust gases between the two high-pressure points, the exhaust manifold(s) and intake manifold. However, it generally requires efficiency-robbing assistance from the turbocharger or other supporting elements to achieve the pressure differential required for sufficient EGR flow rates.
      The new low-pressure system adds to the high-pressure system, supporting continual adjustment of exhaust backpressure for more efficient operation. It recirculates gases between the low-pressure points in the exhaust system (downstream of the particulate filter) and after the compressor inlet.
      When the low-pressure EGR is activated by an electronically controlled valve, the engine burns exhaust gas that has already passed through the particulate filter. That increases the turbocharger’s efficiency, which helps overall vehicle efficiency without deteriorating the rate of particulate matter emitted by the engine.
      A variable intake manifold offers dual air intake pathways for each cylinder. Electronically controlled flaps — one for each cylinder — shorten or lengthen the airflow to each cylinder. This optimizes the airflow into the engine and improves performance and responsiveness across the rpm band, particularly at lower engine speeds.
      A variable-pressure oiling system with a continuously variable-displacement vane oil pump enhances efficiency by optimizing oil pressure as a function of engine speed and load. With it, the oil supply is matched to the engine requirements rather than the excessive supply of a conventional, fixed-displacement oil pump. The engine uses low-friction Diesel Dexos 0W20 oil.
      Oil jets located in the block are employed for performance and temperature control. They target the inner core of the piston with an extra layer of cooling, friction-reducing oil. The jets reduce piston temperature, allowing the engine to produce more power and enhance long-term durability than engines without the technology.
      Active Thermal Management helps the engine warm up quickly to achieve and maintain its optimal engine temperature for performance and efficiency over the entire engine operating range. The system uses a three-actuator rotary valve system to distribute coolant through the engine in a targeted manner. It sends heat where it’s needed to warm up the engine to reduce friction and heat the passenger cabin or cools when needed for high-power operation. The Duramax 3.0L also features split cooling between the block and head.
      Common rail direct fuel injection of 2,500 bar (36,250 psi) helps generates class-leading horsepower and torque. The system’s pressure is generated by an engine-driven twin-piston pump sending fuel to solenoid-activated injectors with nine-hole nozzles that support precise metering of the fuel for a smooth idle and lower combustion noise. The fuel system is capable of multiple injections per combustion cycle — up to 10 times per injector — for more consistent and stable combustion performance that translates into smoothness and refinement, particularly at idle.   
      Electronic throttle valve: The Duramax 3.0L features an electronic throttle valve to regulate intake manifold pressure in order to optimize exhaust gas recirculation rates. It also contributes to a smooth engine shutdown via a more controlled method of airflow reduction.
      Ceramic glow plugs used in the Duramax 3.0L heat up more quickly and hotter than conventional metal-based glow plugs, helping the engine start and heat up more quickly in cold weather. The Duramax 3.0L achieves unassisted and assisted starting temperatures of -22 F (-30 C) and -40 F (-40 C) respectively.
      Stop/start technology helps optimize efficiency in city driving. The driver-selectable system shuts off the engine at stoplights and other stop-and-go situations. The engine automatically restarts when the driver takes their foot off the brake.
      ABOUT CHEVROLET
      Founded in 1911 in Detroit, Chevrolet is one of the world's largest car brands, doing business in more than 100 countries and selling more than 4.0 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature engaging performance, design that makes the heart beat, passive and active safety features and easy-to-use technology, all at a value. More information on Chevrolet models can be found at www.chevrolet.com.
      # # #
      2019 CHEVROLET SILVERADO 3.0L DURAMAX TURBO-DIESEL SPECIFICATIONS
      Type:
      Duramax 3.0L DOHC Turbo Diesel I6 
      Bore & Stroke (in. / mm):
      3.30 x 3.54 inches (84mm x 90mm)
      Block Material:
      Aluminum
      Cylinder Head Material:
      Aluminum
      Compression Ratio:
      15.0: 1
      Firing Order:
      1-5-3-6-2-4
      Valvetrain:
      Dual-overhead camshafts, four-valves per cylinder
      Air Delivery:
      Single variable-geometry turbocharger; intercooling system. 42.8-psi / 2.95 bar max boost
      Fuel Delivery:
      High-pressure, common-rail direct injection (36,250 psi / 2500 bar); electronic throttle valve
      Ignition System:
      Compression
      Max Engine Speed:
      5100 rpm
      Additional Features:
      Continuously variable oil pump; engine oil cooler, automatic stop/start, Active Thermal Management,
      Emissions Control:
      Low-pressure Exhaust Gas Recirculation (EGR); Selective Catalyst Reduction on Filter (SCRF)
      Horsepower
      (hp / kW @ rpm):
      277 / 204 @ 3750 (SAE certified)
      Torque
      (lb.-ft. / Nm @ rpm):
      460 / 624 @ 1500 (SAE certified)
       

      View full article
    • By Drew Dowdell
      GM released power figures today for the new inline 6-cylinder diesel engine that will be available in the Chevrolet Silverado and GMC Sierra.  Available at the same price as the 6.2 liter model, GM promises the new engine will change perceptions about diesel performance and refinement.  GM recently announced the delay of the 3.0-liter diesel until the 2020 model year due to emissions certification delays. 
      Paired with a 10-speed automatic transmission, the diesel produces an SAE-certified 277 horsepower and 460 lb-ft of torque with 95 percent of that torque being available at just 1,250 RPM.  Torque peak comes at 1500 rpm and peak horsepower at 3750 rpm.
      The powertrain is setup to offer diesel exhaust braking to help slow the vehicle when the truck is in tow-haul mode, limiting the number of applications of the brakes to save on brake wear. The engine also has a user selective start-stop function to save additional fuel in city driving. 
      2019 CHEVROLET SILVERADO 3.0L DURAMAX TURBO-DIESEL SPECIFICATIONS
      Type:
      Duramax 3.0L DOHC Turbo Diesel I6 
      Bore & Stroke (in. / mm):
      3.30 x 3.54 inches (84mm x 90mm)
      Block Material:
      Aluminum
      Cylinder Head Material:
      Aluminum
      Compression Ratio:
      15.0: 1
      Firing Order:
      1-5-3-6-2-4
      Valvetrain:
      Dual-overhead camshafts, four-valves per cylinder
      Air Delivery:
      Single variable-geometry turbocharger; intercooling system. 42.8-psi / 2.95 bar max boost
      Fuel Delivery:
      High-pressure, common-rail direct injection (36,250 psi / 2500 bar); electronic throttle valve
      Ignition System:
      Compression
      Max Engine Speed:
      5100 rpm
      Additional Features:
      Continuously variable oil pump; engine oil cooler, automatic stop/start, Active Thermal Management,
      Emissions Control:
      Low-pressure Exhaust Gas Recirculation (EGR); Selective Catalyst Reduction on Filter (SCRF)
      Horsepower
      (hp / kW @ rpm):
      277 / 204 @ 3750 (SAE certified)
      Torque
      (lb.-ft. / Nm @ rpm):
      460 / 624 @ 1500 (SAE certified)
      Manufacturing Location (of globally sourced parts)
      Flint, Mich.  
       
       
      Chevy Press release on page 2


      2020 CHEVROLET SILVERADO’S NEW, ADVANCED 3.0L DURAMAX TURBO-DIESEL REDEFINES EXPECTATIONS
      No-compromise engine delivers refinement, performance and efficiency
      2019-06-03
      DETROIT — The all-new 2020 Chevrolet Silverado’s available 3.0L Duramax inline-six turbo-diesel engine adds choice and versatility for full-size truck customers, offering class-leading torque and horsepower in addition to focusing on fuel economy and capability. It is the first-ever inline-six turbo-diesel offered in Chevrolet’s full-size light-duty trucks.
      Chevrolet engineers started with a clean-sheet design and developed an all-new engine that leverages the efficiency and refinement advantages of the inline six-cylinder architecture and incorporates advanced combustion and emissions technologies to optimize performance and efficiency. It is priced identically to the 6.2L V-8 as a $2,495 premium over a 5.3L V-8 model or $3,890 over a 2.7L Turbo model.
      “From the moment the engine is started, to its idle, acceleration and highway cruising, the 3.0L Duramax performance will change perceptions of what a diesel engine can offer in refinement,” said Nicola Menarini, director for Diesel Truck Engine Program Execution. “With advanced technologies that draw on global diesel expertise, it’s a no-compromise choice for those who want the capability and driving range of a diesel in a light-duty truck.”
      Available on LT, RST, LTZ and High Country models, the 3.0L Duramax diesel rounds out the new Silverado’s range of six propulsion choices, each tailored to suit customers’ needs for performance, efficiency, technology and value. It is rated at an SAE-certified 277 horsepower and 460 lb-ft of torque delivering 95 percent of peak torque at just 1,250 rpm. Peak torque is sustained from 1,500 rpm through 3,000 rpm, providing a powerfully smooth and satisfying driving experience.
      The 3.0L Duramax is paired with GM’s 10L80 10-speed automatic transmission, featuring a centrifugal pendulum absorber torque converter that reduces vibrations to improve smoothness, reinforcing its performance, efficiency and refinement. This combination also offers exhaust braking, which uses the diesel engine’s compression to help slow the vehicle, requiring fewer brake applications by the driver when in Tow Haul mode.
      Innovative Engine Technologies
      The inline six-cylinder architecture offers inherent efficiency and refinement, but the team expanded with smart technology choices to help improve efficiency and weight while optimizing the truck experience. A lightweight aluminum block and cylinder head reduce overall mass, and Active Thermal Management enhances efficiency and cold-weather warm-up. Ceramic glow plugs also help with shorter heat-up times and a quicker cold start, meaning the engine block heater is not needed until -22 degrees F.
      Towing is an important part of owning a truck, and customers can gain additional confidence thanks to the exhaust brake available in tow-haul mode. The water charge air cooler, coupled with low pressure EGR, reduces time to torque. The variable geometry turbocharger helps provide a greater balance of performance and efficiency, and an electronically variable intake manifold helps optimize performance across the rpm band.
      Inherently efficient and balanced
      Compared to a DOHC V-6, the inline-six architecture offers greater efficiency from the reduced friction of operating only two camshafts and their associated valvetrain components. The I6 configuration offers the perfect balance of primary and secondary forces, without the need for balancing shafts.
      “In addition to reduced friction, the architecture enables smooth operation,” Menarini said. “The new Duramax 3.0L elevates the 2019 Silverado with one of the most refined and efficient diesel engines in the segment.”
      Along with supporting elements such as a tuned air induction system and other noise-attenuating elements, the 3.0L Duramax delivers exceptional quietness and smoothness at all engine speeds.
      All-aluminum construction and tough rotating assembly
      The 3.0L Duramax cylinder block is made of a cast aluminum alloy that provides the strength required to support the high combustion pressures that occur within a diesel engine, while also offering an approximately 25 percent mass savings over a comparable cast iron engine block. Iron cylinder liners are used within the aluminum block to insure truck durability.
      There are seven nodular iron main bearing caps that help ensure the block’s strength under those high combustion pressures, while also enabling accurate location of the rotating assembly. A deep-skirt block design, where the block casting extends below the crankshaft centerline, also contributes to the engine’s stiffness and refinement. It’s complemented by a stiffness-enhancing aluminum lower crankcase extension attached to the main bearing caps.
      The rotating assembly consists of a forged steel crankshaft, forged steel connecting rods and hypereutectic aluminum pistons. The alloys in the respective castings for the rods and pistons make them lightweight and durable. Silicon is blended with the aluminum for heat resistance and tolerance within the piston cylinders, which enhances performance and makes the engine quiet.
      A thick piston crown — the top of the piston — and reinforced top ring add strength to support the tremendous cylinder pressures enabled by turbocharging and the engine’s high 15.0:1 compression ratio.
      DOHC Cylinder Head and Rear Cam Drive
      Overhead camshafts offer a direct, efficient means of operating the valves, while four valves per cylinder activated by maintenance-free finger followers with hydraulic lash adjusters increase airflow in and out of the engine. This arrangement is integrated on the Duramax 3.0L’s lightweight aluminum cylinder head, which is topped with a lightweight composite cam cover that incorporates the crankcase ventilation and oil separation systems.
      A pair of lightweight, assembled camshafts actuates 28.35 mm diameter (1.12-inch) intake and 24.55 mm diameter (0.97-inch) exhaust valves. The camshaft drivetrain is uniquely located at the rear (flywheel side) of the engine, for greater refinement and packaging considerations for the comparatively long inline-six. A crankshaft-driven chain drives the high-pressure direct-injection fuel pump, while a chain driven by the fuel pump drives both intake and exhaust camshafts. A smaller belt drives the variable flow oil pump from the crankshaft.
      Additional Technology Highlights
      Variable geometry turbocharging enables the Duramax 3.0L engine to deliver class-leading horsepower with minimal effect on overall efficiency. The system uses closed loop controlled vanes position and sophisticated electronic controls to automatically adjust boost pressure to the desired value based on engine running conditions and instantaneous power demand. The liquid-cooled turbocharger features a low-friction ball-bearing shaft and is mounted close to the exhaust outlet of the engine for quicker spool-up of the turbine and quicker light-off of the exhaust catalyst. A water-to-air intercooling system produces a cooler higher density air charge for greater power. Maximum boost pressure is 43,5 psi (300 Kpa) absolute.
      Low-pressure EGR: The Duramax 3.0L utilizes new low-pressure Exhaust Gas Recirculation to optimize performance and efficiency. The EGR system diverts some of the engine-out exhaust gas and mixes it back into the fresh intake air stream, which is drawn into the cylinder head for combustion. That lowers combustion temperatures and rates.
      Traditionally, EGR systems in diesel applications recirculate exhaust gases between the two high-pressure points, the exhaust manifold(s) and intake manifold. However, it generally requires efficiency-robbing assistance from the turbocharger or other supporting elements to achieve the pressure differential required for sufficient EGR flow rates.
      The new low-pressure system adds to the high-pressure system, supporting continual adjustment of exhaust backpressure for more efficient operation. It recirculates gases between the low-pressure points in the exhaust system (downstream of the particulate filter) and after the compressor inlet.
      When the low-pressure EGR is activated by an electronically controlled valve, the engine burns exhaust gas that has already passed through the particulate filter. That increases the turbocharger’s efficiency, which helps overall vehicle efficiency without deteriorating the rate of particulate matter emitted by the engine.
      A variable intake manifold offers dual air intake pathways for each cylinder. Electronically controlled flaps — one for each cylinder — shorten or lengthen the airflow to each cylinder. This optimizes the airflow into the engine and improves performance and responsiveness across the rpm band, particularly at lower engine speeds.
      A variable-pressure oiling system with a continuously variable-displacement vane oil pump enhances efficiency by optimizing oil pressure as a function of engine speed and load. With it, the oil supply is matched to the engine requirements rather than the excessive supply of a conventional, fixed-displacement oil pump. The engine uses low-friction Diesel Dexos 0W20 oil.
      Oil jets located in the block are employed for performance and temperature control. They target the inner core of the piston with an extra layer of cooling, friction-reducing oil. The jets reduce piston temperature, allowing the engine to produce more power and enhance long-term durability than engines without the technology.
      Active Thermal Management helps the engine warm up quickly to achieve and maintain its optimal engine temperature for performance and efficiency over the entire engine operating range. The system uses a three-actuator rotary valve system to distribute coolant through the engine in a targeted manner. It sends heat where it’s needed to warm up the engine to reduce friction and heat the passenger cabin or cools when needed for high-power operation. The Duramax 3.0L also features split cooling between the block and head.
      Common rail direct fuel injection of 2,500 bar (36,250 psi) helps generates class-leading horsepower and torque. The system’s pressure is generated by an engine-driven twin-piston pump sending fuel to solenoid-activated injectors with nine-hole nozzles that support precise metering of the fuel for a smooth idle and lower combustion noise. The fuel system is capable of multiple injections per combustion cycle — up to 10 times per injector — for more consistent and stable combustion performance that translates into smoothness and refinement, particularly at idle.   
      Electronic throttle valve: The Duramax 3.0L features an electronic throttle valve to regulate intake manifold pressure in order to optimize exhaust gas recirculation rates. It also contributes to a smooth engine shutdown via a more controlled method of airflow reduction.
      Ceramic glow plugs used in the Duramax 3.0L heat up more quickly and hotter than conventional metal-based glow plugs, helping the engine start and heat up more quickly in cold weather. The Duramax 3.0L achieves unassisted and assisted starting temperatures of -22 F (-30 C) and -40 F (-40 C) respectively.
      Stop/start technology helps optimize efficiency in city driving. The driver-selectable system shuts off the engine at stoplights and other stop-and-go situations. The engine automatically restarts when the driver takes their foot off the brake.
      ABOUT CHEVROLET
      Founded in 1911 in Detroit, Chevrolet is one of the world's largest car brands, doing business in more than 100 countries and selling more than 4.0 million cars and trucks a year. Chevrolet provides customers with fuel-efficient vehicles that feature engaging performance, design that makes the heart beat, passive and active safety features and easy-to-use technology, all at a value. More information on Chevrolet models can be found at www.chevrolet.com.
      # # #
      2019 CHEVROLET SILVERADO 3.0L DURAMAX TURBO-DIESEL SPECIFICATIONS
      Type:
      Duramax 3.0L DOHC Turbo Diesel I6 
      Bore & Stroke (in. / mm):
      3.30 x 3.54 inches (84mm x 90mm)
      Block Material:
      Aluminum
      Cylinder Head Material:
      Aluminum
      Compression Ratio:
      15.0: 1
      Firing Order:
      1-5-3-6-2-4
      Valvetrain:
      Dual-overhead camshafts, four-valves per cylinder
      Air Delivery:
      Single variable-geometry turbocharger; intercooling system. 42.8-psi / 2.95 bar max boost
      Fuel Delivery:
      High-pressure, common-rail direct injection (36,250 psi / 2500 bar); electronic throttle valve
      Ignition System:
      Compression
      Max Engine Speed:
      5100 rpm
      Additional Features:
      Continuously variable oil pump; engine oil cooler, automatic stop/start, Active Thermal Management,
      Emissions Control:
      Low-pressure Exhaust Gas Recirculation (EGR); Selective Catalyst Reduction on Filter (SCRF)
      Horsepower
      (hp / kW @ rpm):
      277 / 204 @ 3750 (SAE certified)
      Torque
      (lb.-ft. / Nm @ rpm):
      460 / 624 @ 1500 (SAE certified)
       
    • By William Maley
      At an event tonight in Detroit, Cadillac delivered a one-two punch for those craving for a bit of performance with the introduction of the 2020 CT4-V and CT5-V. On paper, the two models aren't what we were expecting. Instead of the firebreathing monsters that were the ATS-V and CTS-V, the CT4 and CT5-V are more in line with middle children of German automakers - Audi S4, BMW M340i, and Mercedes-AMG C43 and E43.
      CT4-V
      To say we're a bit surprised that Cadillac is showing off the performance variant of their upcoming entry-level sedan would be an understatement - the reveal of the standard CT4 is expected to happen in a few weeks. Aimed at the likes of the Audi S3 and Mercedes-AMG A45, the CT4-V uses a 2.7L turbo-four from the Chevrolet Silverado and GMC Sierra. It makes 320 horsepower and 369 pound-feet of torque. Power flows through a 10-speed automatic to either rear or all four wheels. No manual is available. Other mechanical bits to be aware of are four-piston brake calipers at all corners, and Magnetic Ride Control being standard on RWD models - AWD sticks with conventional shocks.
      Design-wise, the CT4-V looks like it could be mid-cycle facelift for the ATS with a similar profile. The front end mimics the larger CT5 with a wide grille and unique headlight shape. Around back, there is a boat tail effect for the trunk lid with a small lip spoiler and quad tailpipes.
      CT5-V
      Cadillac appears to be playing it quiet with the CT5-V's design. The only bits that set it apart from the standard model are the dark trim, quad-tailpipes, rear diffuser, and new wheels. Under the hood is a twin-turbo 3.0L V6 making 355 horsepower and 400 pound-feet of torque. For those keeping score, that's 20 more horsepower than the CT5 with this same engine, while torque is unchanged. Like the CT4-V, the CT5 routes power through a 10-speed automatic and either rear- or all-wheel drive. An electronically controlled limited-slip differential, Magnetic Ride Control, Performance Traction Management system, and four-piston brakes finish off the changes.
      The CT4-V and CT5-V are expected to go on sale early next year.
      Our Big Concern
      We find ourselves wondering what is Cadillac thinking? On paper, these models make more sense as V-Sport models considering what's being presented. Badging them as V dilutes hardcore image that the past few models have brought forth. Why is Cadillac doing this? Autoblog may have an answer. According to a Cadillac representative, the brand is wanting to bring in a broader set of buyers to showrooms, hence they are making them less hardcore. This will allow them to bring V versions of other models like their crossovers. But there are hardcore versions coming in the pipeline according to the rep.
      Still, we can't help but wonder if GM has done their classic move of shooting themselves in the foot.
      Source: Cadillac


      Cadillac Reveals First-Ever CT4-V and CT5-V
      Expanded lineup adds more choices for spirited performance. Highlights include available Super Cruise, AWD, Magnetic Ride Control 4.0, eLSD and new V-Mode Driven by Cadillac’s latest turbocharging technology and building on more than 15 years of performance credentials, the first-ever 2020 CT4-V and CT5-V were unveiled today, expanding choices for the brand’s V-Series performance sub-brand.
      Following the 2019 CT6-V, they grow the V-Series family with even more levels of performance, while preserving the lineage established by the original V-Series lineup introduced in 2004.   
      “The new V-Series sedan lineup defines modern sophistication by combining luxury appointments with thoughtful technology and athletic refinement for the discerning enthusiast,” said Brandon Vivian, Cadillac executive chief engineer. “We are inviting even more customers into the V-Series family by adding a new level of elevated performance between our Sport models and the ultimate, high-performance track capability that the V-Series has grown to represent.”
      The first-ever CT4 and recently introduced CT5 represent Cadillac’s realigned sedan portfolio, characterized by new proportions, innovative technologies and more appearance and performance choices. Each is built on Cadillac’s award-winning rear-wheel-drive Alpha architecture, with the V-Series models developed to deliver the ultimate blend of performance, presence and road-going refinement.
      Both share the latest standard V-Series performance technologies, including Magnetic Ride Control 4.0, which is tuned specifically for V models to enhance comfort without sacrificing performance-oriented responsiveness, and drive modes that include new V-Mode personalization. Each model is available in RWD or AWD and features a 10-speed automatic transmission, Brembo front brakes with eBoost electronic assist and a limited-slip rear differential on CT4-V and electronic limited-slip differential on CT5-V.
      Cadillac’s exclusive Super Cruise1, the first true hands-free driver assistance feature for the freeway, is available on more than 130,000 miles of limited-access freeways in the U.S. and Canada. It will be available on both new V-Series models.  
      “The new lineup expands the V-Series ethos, drawing more customers into the Cadillac Performance family, and the newest Vs are focused on elevated athleticism and luxurious refinement for customers wanting a dynamic daily drive,” said Mark Reuss, GM president. “And this is only the beginning of the V family. Cadillac’s passion for performance shines on a racetrack. Stay tuned.”
      Vehicle highlights

      CT5-V — The first-ever CT5-V builds on the precision-focused details of the all-new luxury sedan introduced earlier this year to offer elevated road performance and an engaging driving experience.  
      Powered by Cadillac’s high-output 3.0L Twin Turbo V-6 engine, which uses low-inertia turbochargers to enhance power production across the rpm band. It is rated at a Cadillac-estimated 355 horsepower (265 kW), pending SAE certification. 10-speed automatic transmission. Electronic limited-slip rear differential. Standard RWD and available AWD. V-Series performance chassis with Magnetic Ride Control 4.0. Performance Traction Management. Vehicle Control Mode with customizable V-Mode. Brembo front braking system. 19-inch wheels and summer-only performance tires2 (all-season tires available with AWD). Dark exterior accents and V-Series mesh grilles; unique rear diffuser and quad exhaust tips. Super Cruise1 available. Unique performance persona instrument cluster and V-Mode steering wheel control. CT4-V — Developed for a new generation of sedan customers, the first-ever CT4 blends nimble handling and Cadillac’s signature technology. The CT4-V takes these traits further, infusing the brand’s racing DNA for a dynamic, responsive and exhilarating driving experience.   
      Powered by Cadillac’s high-output 2.7L Turbo engine featuring a unique three-step sliding camshaft that helps optimize performance at all speeds. It is rated at a Cadillac-estimated 320 horsepower (239 kW), pending SAE certification. 10-speed automatic. Limited-slip rear differential. V-Series performance chassis with Magnetic Ride Control 4.0 (on RWD) or ZF MVS passive dampers (on AWD). Vehicle Control Mode with customizable V-Mode. Brembo front braking system. 18-inch wheels and summer-only performance tires2 (all-season tires available with AWD). Near-perfect 50/50 weight distribution for an exceptional feeling of balance and control. Dark exterior accents and V-Series mesh grilles; quad exhaust tips, unique rear spoiler design that helps reduce rear lift while increasing grip for the rear tires. Super Cruise1 available. Unique performance persona instrument cluster and V-Mode steering wheel control. MORE TO COME
      The CT4-V and CT5-V go on sale early in the 2020 calendar year, with production at GM’s Lansing Grand River facility in Michigan. Additional product information, as well as details on additional V-Series variants and CT4 Luxury, Premium Luxury and Sport models, will be announced at a later date.

      View full article
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