Corvette Chiefs, Pt. 5 or 5: Tadge Juechter

Published on January 29, 2021 by Scott

Corvette chief engineer Tadge Juechter delivered the C7 Corvette, the C7 Z06, the C7 Grand Sport, the C7 ZR1, and soon the 2020 mid-engine C8 Corvette.

Dateline 1.29.21, Images: Graphics by the Author, Image from GM Archives – All five Corvette chief engineers contributed mightily and in their own unique ways. But only Tadge Juechter has the distinction of having done hard engineering on five generations of Corvettes. When Juechter went to work in 1993 as chief engineer Dave Hill’s right-hand-man, there were two objectives; keep the then-current C4 fresh and interesting; and design and develop the most revolutionary Corvette to that date, the C5. After Hill’s retirement, Tom Wallace was Vehicle Line Engineer (VLE) and chief engineer for the Corvette. Wallace accessed that because of Juechter’s 15 years of experience, he was the right man for the chief engineer position. Wallace stayed on as VLE and eventually took an early retirement offer.

While Juechter didn’t have the racing background that Hill and Wallace had, he was raised in a Porsche household and liked to tinker around with mechanical things. As a young teenager growing up in Chappaqua, New York in the ‘70s, Juechter built a prehistoric mountain bike with a full front and rear suspension. His folks even gave him their wrecked Cadillac to take apart.

During Juechter’s college years at Stanford, he worked two summers on a GM assembly line, an experience not to his liking. Juechter graduated with degrees in aerospace and mechanical engineering and had no intention of working for GM. Then in 1978 a friend asked Juechter to tag along to a GM interview and ended up interviewing as well; and was offered a job. The late ‘70s and ’80 was a challenging time for the American car industry, but at least Juechter had a solid job. In the car business, if your ambition is upper management, an MBA is a must-have degree. Juechter earned his MBA from Stanford GSB in 1986.

By the time Juechter interviewed with Hill for the position of Assistant Chief Engineer, he was aware of the aging Corvette and impressed with the in-the-works C5. The C4’s plastic interior was a major bone of contention with Juechter. Hill was impressed and Juechter got the job. The jump from the early ‘80s designed C4 to the C5 was revolutionary. The creation of the Corvette Racing Team was the beginning of the deliberate merger of Chevrolet engineering and Corvette racecar engineering that was poured into the C5 Z06. Early on, Chevrolet general manager Jim Perkins wanted an inexpensive Corvette that would appeal to racers; this became the ’99 Hardtop and the Hardtop became the C5 Z06. While the C6 was an evolved version of the C5, no one was expecting the 505-horsepower 427 Z06 with an aluminum frame and dry-sump oil system.

From 2005 to 2008 sales averaged 36,816 cars per year. In 2006 Tom Wallace was Corvette VLE and chief engineer. While Wallace was a racer, his Corvette experience was a little thin. When Wallace learned that Juechter and his team were working on a mid-engine prototype, he knew that Juechter was the brains behind the Corvette. Juechter was promoted to chief engineer, North American Corvette.

Juechter has said that he was shocked when given orders to make the C6 ZR1; the goal was to build the best possible Corvette for $100,000. A big-block was briefly considered but rejected because of its weight. All-Wheel-Drive was not possible on the C6’s platform. The Z06 was to be the track car and the ZR1 would be GM’s halo, Grand Touring supercar.

Then the economy stalled out and the in-the-works C7 was put on hold indefinitely. Wallace took GM’s early retirement offer, leaving the Corvette all to Juechter. When GM slammed into bankruptcy in June 2009, for a time it looked like it was curtains for GM. But it turned out that the government auditor that was looking into the Corvette was a car enthusiast and knew about the pending C7. Upon examining the books, it was discovered that the Corvette was one the few GM car lines that was making money. Juechter’s team was told to get busy on the C7. The Corvette and the Bowling Green assembly plant were spared.

By the time you read this, the C8 will have made its debut and will be the most revolutionary Corvette ever. Previously, the C5 had that honor because of its all-new engine and drivetrain, and its hydroformed perimeter frame and backbone center section. The C6 and C7 generations are both evolutionary versions of the C5. The C5 and C6 are Hill’s Corvettes; the C7 and C8 are Juechter’s Corvettes. As of this writing, we know the basics of the C8, but none of the hard details. So lets look a Juechter’s C7.

A big part of Juechter’s job as VLE is to make sure there’s a Corvette for everyone with a variety of price points, and a base car that offers outstanding visual and performance value. Juechter said, “It helps having worked on the C5 and C6 because you know where a lot of the land mines are.” With horsepower ever increasing, it’s critical that the car be made easier to drive. The base C7 has 455-net horsepower; way more than any big-block ever had; yet the C7 is a car that is easy to live with. The 755-horsepower 2019 ZR1 is absolutely astonishing; it can perform on par with exotic sports cars, yet be a comfortable, usable GT machine. Electronic suspension, steering, braking, rev-matching, paddle-shift 8-speed automatic and fuel management are responsible for a balance of extreme power and civility. Imagine trying to drive a Greenwood widebody racer on the street.

When the C7 was unveiled, fans were stunned to learn that the base model had an aluminum frame and that later the Z06 and ZR1 would be available as a coupe or convertible and with an 8-speed manual or automatic transmission. Another first was achieved; the 8-speed automatic was quicker than the manual version.

Corvette interiors have often been a bone of contention with critics and the C6 took big hits for its interior. To get C7’s interior spot-on, Juechter made sure designers had set-of-the-pants experiences of life inside a 1-G cockpit; to know what it feels like having skin pressing on hard objects. He also made surer there were no distracting infotainment systems; just important information for spirited driving. The C7 has received rave reviews for its interior.

Concerning the C7 ZR1, initially there were no plans to make the car, as designers didn’t think they could do more beyond the Z06. But after a few years, plus aero input from the Corvette racing team, a new plan emerged to make the ZR1 the most powerful, stable, advanced front-engine Corvette ever offered. Many speculated that Chevrolet might build the front engine and mid-engine Corvettes side-by-side, but that will not be the case. C7 production will end in summer 2019 and the last C7 will be a black Z06 that will be auctioned off, with proceeds going to the Steven Siller Tunnel to Towers Foundation.

While Juechter was an integral part of the C5 and C6, those were Hill’s Corvettes. Even though Juechter guided the C7, the C5, C6, and C7 all have Hill’s Corvette DNA. The C8, on the other hand, is Juechter’s Corvette. People expect more of everything today, and everything is riding on the mid-engine C8. – Scott

This concludes my Corvette Chiefs Series. Below are links to parts 1-to-4. Enjoy

Corvette Chiefs, Pt. 1 – Zora Arkus-Duntov

Corvette Chiefs, Pt.2 – Dave McLellan

Corvette Chiefs, Pt. 3 – Dave Hill

Corvette Chiefs, Pt. 4 – Tom Wallace

The above articles originally were published in Vette magazine as part of my Illustrated Corvette Series monthly column.

The Story of Carbon Fiber and Corvettes

Published on August 22, 2020August 22, 2020 by Scott

The Hottest Automotive Material Since Fiberglass

Dateline: 8.22.20 This article first appeared in the May 2019 issue of Vette Vues – UPDATE: Indulge me for two brief paragraphs on the subject of carbon fiber and Corvettes. First, two “known” secrets; 1. There will be a Z06 and a ZR1 version of the C8 Corvette. 2. GM is committed to electric cars, by 2023 they project over 20 all-electric vehicles and by 2030 almost all GM vehicles will be all-electric-powered. We don’t know how the electrical grid will be able to handle the extra load for electricity, lets hope there are some new technology tricks up engineer’s sleeves. The new C8 uses a 48-volt system; that’s a big jump from the previous 12-volt system that has been around since the 1950s.

Why the extra juice? Allow me to speculate.

The C8 ZR1 will have an all-electric, all-wheel-drive drivetrain with a combined electric motor power of 1,000-horsepower and 1,000-lb/ft of torque. Electric motors have their full torque starting at 1-rpm; that’s why diesel-electric locomotives are so powerful. Here’s the carbon fiber leap. Remember how we were stunned when the 2006 Z06 was debuted and we learned that the frame was aluminum. Next, all C7 and C8 Corvette have aluminum frames. To safely handle the tremendous leap on power, I predict that the C8 ZR1 will have a carbon fiber chassis. Think about it. We’ll see. Stepping off soapbox…

Image Credit: www.WikiCommons.com Caption: Take note of the smallest fibers. Each fiber has a tensile strength 200-times that of steel. When the thin fibers are twisted together they are similar to twisted steel wire used to suspend bridges. The twisted fibers are then woven into a mat fabric that is incredibly strong.

Carbon Fiber is without a doubt the hottest trend in automotive materials since the introduction of fiberglass in the early 1950s. Most car enthusiasts understand that racing technology typically precedes production technology. The first structural application of carbon fiber arrived in 1981 when McLaren built their MP4/1 Formula One racecar. McLaren engineer John Barnard built the car’s monocoque chassis/tub completely out of carbon fiber supplied by Hercules Aerospace, in Wilmington, Delaware.

**Image Credit: www.WikiCommons.com Caption: The tiny fibers are carbon fiber nanotubes. The tiny fibers are then woven into a wool-like strand.**

This was a radical departure from traditional monocoque-type construction that consists of a central “tub” structure that the front frame and suspension, engine, and drivetrain all bolts onto. Formula One competitors were suspicion of the new material and called it, “black plastic” fearing that it would shatter and vaporize in a crash situation. This misperception was dispelled at the 1981 Monza Grand Prix when driver John Watson became carbon fiber’s first “crash test dummy”. Watson’s car spin out and crashed was so violet that people that saw the crash on television cried, thinking the worst. But Watson climbed out of what was once a fine racecar and waved to the crown, unhurt.

Image Credit: www.RoadAndTrack.com Caption: This is a typical piece of carbon fiber mat. Note how each piece of the weave is made of many tiny thin fibers, each with the tensile strength 200-times that of steel at a fraction of the weight.

Watson said in an interview, “Had I had that accident in a conventional aluminum tub, I suspect I might have been injured because the strength of an aluminum tub is very much less than the carbon tub.” McLaren’s objective with the use of carbon fiber was to reduce weight and increase strength. Watson’s accident proved the point and almost overnight, Formula One car builders switched to carbon fiber tubs.

**Image Credit: www.RoadAndTrack.com Caption: This is the 1981 McLaren MP4/1 Formula One racecar, the world’s first carbon fiber racecar.**

In 1879 Thomas Edison is credited with inventing carbon fiber in his quest to develop the electric light bulb. Edison formed threads of cotton and bamboo slivers into a specific shape and baked them at high temperatures. Cellulose in cotton and bamboo is a natural polymer, consisting of repeating segments of glucose. The baking process “carbonizes” the material and becomes a carbon copy of the beginning material – a carbon fiber with an exact shape. U.S. Navy ships used the same filaments into the 1960s because they were stronger and more resistant to vibration than tungsten.

Image Credit: www.Jalopnik.com Caption: This is the carbon fiber tub of the McLaren MP4/1 Formula One racecar. Monocoque “tub” construction had been around since the mid-1960s and was exclusively made from aluminum to save weight. The carbon fiber tub design is lighter and stronger than aluminum and totally change Formula One racing overnight.

Modern carbon fiber was born in 1956 in a Union Carbide lab by physicist Roger Bacon when he was performing experiments with the triple point of graphite. This is where the solid, liquid, and gas are all in thermal equilibrium. Using a device similar to early carbon arc street lamps, Bacon observed that when he decreased the pressure in his device, the carbon would go from the vapor to solid, forming a one-inch long stalagmite-like structure on the lower electrode that he called “whiskers”. These whiskers were 1/10th diameter of a human hair that you could bend and kink, but they weren’t brittle. He called these long filaments the “perfect graphite.”

**Image Credit: www.RoadAndTrack.com Caption: This is the center section tub of a 2009 McLaren 12C. Note the attachment points for the front frame rails and front suspension points.**

Further experimentation developed the stiffest, strongest materials by weight that had ever been created. Steel has a tensile strength of 1-2 Gigapascals (GPa); Bacon’s fibers had a tensile strength of 20 GPa. Later development brought the carbon fiber’s strength up to 200 GPa. Bacon’s work eventually developed carbon nanotubes (CNTs); hollow cylinders of graphite with diameters on the order of single molecules. Today, CNTs are used in energy storage, device modeling, boat hulls, water filters, sporting goods, thin-film electronics, antennas, coatings, actuators, electromagnetic shields, and yes, automotive parts. Auto applications include; energy storage applications, batteries and superconductors; printable, thermoformable, capacitive touch sensors used to replace membrane switches in interiors; and polymer composites with mechanical properties, thermal conductivity, and enhanced electrical connectivity.

**Image Credit: www.RoadAndTrack.com Caption: This is the 2009 McLaren 12C tub with the A and B-pillar attached.**

For performance fans, the use of CNT polymers means second-generation carbon fiber material. Consider the leap from C5 to the C5 Z06 with it’s bolted and bonded hardtop roof that increased structures stiffness by 12-percent, compared to the C6 Z06 with its aluminum frame that was 50-percent stronger in bending resistance; compared the C7’s aluminum frame that is 60-percent stiller than the C6’s steel frame. What levels of structural stiffness might we see with a carbon fiber frame, or better yet a carbon nanotube fiber frame?

Image Credit: www.BringATrailer.com Caption: Here’s the rolling chassis of the 2009 McLaren 12c. Notice how the front suspension attaches to the carbon-fiber tub. The engine and drivetrain attach to the rear section of the carbon-fiber tub.

Carbon fiber has two major downsides; 1. cost; and 2. recycling. Elon Musk’s SpaceX company is working on bringing down the cost of carbon fiber because large carbon fiber parts are an essential element in reducing the cost of space exploration. Sir Richard Branson’s Virgin Galactic space planes are made from carbon fiber. Carbon fiber is definitely “space-age” material. Another factor in why the cost of carbon fiber is so high is simple supply and demand. Nearly half of the airframe of the Boeing 787 is made from carbon fiber and offers a weight savings of 20-percent. The 787’s airframe is made of 20-percent aluminum, 15-percent titanium, and 5-percent other. Composite structures require less scheduled maintenance than non-composite structures.

The second big downside of carbon fiber is that it is difficult to recycle. Used material can be ground down, or exposed to very high temperatures and, or chemicals to recover the carbon fiber. Remember, the carbon fiber is embedded in resin. Unfortunately, the carbon fiber can be damaged and the matrix resin materials in the composites can be destroyed. Damaged carbon fibers can never be used again in carbon fiber applications.

In 2017 researchers from Washington State University developed a new recycling method using mild acids as catalysts in low-temperature ethanol to break down thermosets. To break down the cured material, researchers raised the material temperature to allow the catalyst-containing liquid to penetrate the composite and break down the complete structure; basically dissolving the material. This allowed the researchers to recover the carbon fibers and the resin material. The researchers have filed for a patent and are developing a commercial process to take to the marketplace.

So, there have been numerous reasons why it has taken so long for carbon fiber parts to integrate into Corvettes. The 1992 Stingray III concept car had a carbon-fiber tub as the central part of the car’s chassis. In 2004 the swansong Corvette special edition option was the Commemorative Edition. This was a beautiful option group with special trim, stripes, and dedicated paint that cost $3,700 for the coupe and convertible. The option was available on the Z06, but with one big difference; the Z06 version had a carbon fiber hood that weighed only 20.5-pounds, compared to 31.1-pounds for the stock hood; a savings of 10.6-pounds. The Z06 Commemorative Edition cost $635 and the carbon fiber hood was only available on the Z06 Commemorative Edition option.

When the 2006 Z06 came out, everyone was agog over the new LS7 427 engine with its dry-sump oil system; widebody; new wheels and suspension; aluminum frame; and magnesium engine cradle and roof section. It was easy to miss the carbon fiber body panels staring you in the face. The Z06’s front fenders, front wheelhouses, and rear fenders were carbon fiber and the interior floor was a carbon fiber and balsa wood sandwich. The carbon fiber components certainly added to the $65,800 price of the 2006 Z06 – $21,200 more than the base model coupe.

The 2009 LS9-powered, supercharged ZR1 was the Corvette no one was anticipating that caught everyone by surprise. From 2009 to 2015 the C6 ZR1 was the most powerful Corvette ever offered. But the ZR1 wasn’t just about power. The new ZR1 had more carbon fiber than any previous Corvette ever had. The ZR1 featured a carbon fiber raised hood with a clear polycarbonate window that showed off the LS9’s intercooler; the dedicated front fenders were painted carbon fiber; and the front fascia splitter; roof bow; fixed roof panel; and the side rockers were clear-coated carbon fiber.

From 2010 to 2013 Chevrolet played mix’n-match with parts, making specialty parts from the ZR1 and Z06 available on the very popular Grand Sport; making buying a new Corvette a boutique experience. In 2011 Chevrolet introduced the $90,960 Carbon Edition Z06. RPO CFZ Carbon Fiber Package for the Z06 was a $3,995 option that added black carbon fiber splitter, side rockers, roof panel, and a body-colored ZR1 rear spoiler.

Carbon fiber integration continued with the C7, but mostly as options. RPO C2M, the $2,995 Carbon Fiber Dual Roof Package, and the $1,995 RPO C2Z Visible Carbon Fiber Roof were available on all coupes from 2014 to 2019. From 2015 to 2019 RPO CFV, the $3,995 Carbon Fiber Ground Effects was available. And from 2014 to 2019 RPO FAY, the $995 Carbon Fiber Interior Appearance Package dressed up the C7’s interior.

The 2015 Z06 blew everyone away with a 145-horsepower raise from the C6 Z06. Carbon fiber parts included the dedicated raised hood and the removable carbon-fiber roof panel. Previous Z06 Corvettes had a fixed roof panel for additional rigidity. And all optional carbon fiber ground effects were available painted and unpainted.

In 2018 Chevrolet celebrated Corvette’s 65th Anniversary with the Carbon 65 Edition. Only 650 cars were offered on the Grand Sport 3LT and Z06 LZ models. The $15,000 package was dripping with special features. New to the lineup of carbon fiber features was the new rear spoiler and quarter ducts. Carbon fiber ground effects and the hood was also included in the package. And lastly, the $122,095 2019 ZR1 has a carbon-fiber halo hood and engine cover; adjustable high rear wing; front splitter and end caps; and steering wheel rim.

**Image Credit: www.HiPerformance.com Caption: If you doubt the strength of carbon fiber, consider that performance racing wheels are now being made in carbon fiber.**

Carbon fiber will only become more ubiquitous in the future. What might we expect to see soon? The C8 structure may well use some form of a carbon-fiber tub, or perhaps carbon fiber side rails and other frame and chassis components. Carbon fiber wheels and perhaps some suspension parts might also be in Corvette’s future. Check out the cars in the Daytona Prototype International class at any IMSA race this year, that’s where you’ll find the clues as to what to expect.

Yes, the mat weave of carbon fiber is a look that has taken over the modern automotive and motorcycle hobby. Today you can get nearly anything either made with carbon fiber or with the carbon fiber look. As the price of carbon fiber comes down it will probably become the preferred material for performance cars. Several companies are today making and offering carbon fiber wheels. Carbon fiber 3D printers are also on the marketplace, as well as carbon fiber vinyl wrap material. Indeed, carbon fiber has become the “look” of our time. – Scott

This story was originally published in the May 2019 issue of Vette Vues.

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The C7 Corvette Chassis, Pt 6: The Chassis Tadge Juechter Built

Published on January 20, 2020 by Scott

Tagdge Juechter’s Genesis Program C7 Chassis

Dateline: 1-20-20, Illustrations & graphics by K. Scott Teeters – The C6 Corvette was a much-improved C5 and was well-received upon release. Fans liked the crisp new look, the new interior (for a while), and the extra grunt. Since the successful arrival of the performance Z06 model in 2001, every new generation Corvette is expected to have a Z06. Within minutes of the C6’s debut, the next question was, “Where’s the Z06?” The following year when the C6 Z06 was unleashed, there was an unanticipated surprise; an aluminum chassis.

This wasn’t on anyone’s wish list and was a total surprise. It wasn’t even on Zora Arkus-Duntov’s Christmas list! Weighing in at just 3,132-pounds, you have to go back to 1964 to find a lighter Corvette (3,125-pounds). Powered by the mighty 427 LS7 engine with 505 net-horsepower, with C5-R suspension technology, the C6 Z06 was better suited for the track, although many learned how to drive the new beast successfully on the street. The C6 Z06’s aluminum chassis had no trouble handling 638-horsepower in the ZR1 configuration. Bravo Corvette chassis engineers!

When Tadge Juechter’s C7 Corvette debuted, fans were stunned to learn that the base model C7 was built an even better version of the Z06’s aluminum chassis. But wait, there’s more! The same new aluminum chassis would be used for the coupe AND convertible Corvette. This was a major breakthrough and bespeaks of advanced engineering. Here’s how Juechter’s team did it.

Juechter’s objective was to build a modern performance car that delivered enhanced driving experience, more efficiency that yielded more performance. Every element had to contribute to the overall performance and there would be nothing fake. That explains everything that we see on the C7 Corvette, but what’s unseen is even more amazing.

As we learned from the C5 with its hydroformed side rails, stiffness matters. Juechter is on record stating that while hydroforming was an engineering game-changer, the downside is that parts have a uniform thickness; even in areas where it isn’t needed. Hydroformed parts cannot be tailored for areas that need greater or less strength. Enter the Genesis Software Program.

This is almost computer magic. Engineers first determine the overall block space they want; length, width, and height. Then they determine where they want to place the major components; engine, transmission, suspension assemblies, cabin parts, etc. This creates negative spaces where the structure needs to be to hold everything together. The Genesis Program then synthesizes an optimum structure so that engineers can then take the load design and break it down into parts that can be fabricated and joined together. Afterward, dynamic stress and crash testing is performed and parts modified to meet predetermined objectives.

The C7’s hydroformed aluminum frame rails were optimized for the best the aluminum industry could offer, in terms of tensile strength, lightweight, and materials-joining technology. New aluminum metallurgy and aluminum fastening technologies allow engineers to augment the hydroformed frame with 7000-Series aluminum extrusions designed for specific areas; such as engine/front suspension assembly, transaxle/rear suspension assembly mounting points and frontal collision areas.

Careful consideration to the placement of major components was also critical. Juechter’s team felt that the C6 was slightly nose-heavy. Components were adjusted so that the C7 is now rear-biased, allowing more load on the rear wheels for better traction at launch; like a racecar. The front wheels were moved forward 1-inch making the wheelbase 106.7-inches. This is the longest wheelbase Corvette ever made. The shortest was the C4, measuring 96.2-inches. Moving the wheels forward also allowed for more space under the hood for the new LT1 engine and various auxiliary systems. This also preserved “crash space” in the front.

Offering an aluminum frame for the coupe and convertible was a big challenge for the team. But because the basic frame structure is so strong, it didn’t need additional roof structure via a fixed roof. The net result is that not only can the Z06 and ZR1 have lift-off rood panels, but both can also be offered as a convertible. This was unimaginable for the C5 Z06, C6 Z06, and the C6 ZR1. According to Ed Moss, the C7 structural engineer group manager, his engineering team tailored sixteen different thicknesses of various grades of aluminum from 11-mm to 2-mm. The completed C7 aluminum frame is 100-pounds lighter than the C6’s steel frame and is 60-percent stiffer. Juechter said that engineers consider the C7’s aluminum chassis to be the most beautiful part of the C7. Perhaps someday Chevrolet will offer a transparent carbon fiber body option.

The C7 frame was also designed for aerodynamic efficiency. In the past, engineers tended to only consider how air passed over and under a performance car. The C7 literally breathes. Spaces under the car’s skin and in between the chassis structure were designed for the internal ducting for engine cooling, brakes, transmission, and differential cooling, and venting. Other spaces allowed for electrical and plumbing fixtures for coolant, fuel, and air conditioning ducting.

The C7 design team worked closely with the Corvette Racing Team on airflow management because even racecars are concerned about fuel consumption, as well as top speed dynamics and stability. Two of the most obvious ducting and venting features is the air extractor on the hood, and the NACA ducts on the top of the rear fenders.

Taking a lesson from the C6.R Corvette racecars, the C7’s radiator is tilted forward. One-third of the air that passes through the radiator is vented out of the hood. The hood louvers are angled so that the exiting air flows tightly over the car creating additional downforce to the nose of the car; thus eliminating the dreaded nose lift.

Heat exchangers (radiators) for the transmission were placed in the back, close to the transaxle with air ducted through the NACA duct feeding into the heat exchangers and then vented out through vents next to the taillights. This is just another example of how every element on the C7 has a defined purpose.

All of the foundational work that went into the C7’s chassis laid down a structure what was easily adaptable to the $2,780 Z51 suspension option that included; performance brakes with slotted rotors; dry-sump oil system; suspension upgrades; special wheels and tires; electronic limited-slip differential with a cooler, performance gearing, and an aero package. The Z51 was for drivers that wanted to use more of the C7 460-horsepower and explore the pleasures of the C7’s superior structure.

The 2015 Z06 with its supercharged 650-horsepower LT4 engine, wide-body, suspension, and tire enhancements work wonderfully with the C7’s basic structure. The same can be said for the 755-horsepower ZR1; the basic structure is up to the task. Arguably, the most interesting use of available C7 components is the Grand Sport. It has the aggressive-looking Z06 body and suspension parts that take using the base model’s 460-horsepower to a whole new level.

I will now go out on a limb. At the C7 ZR1 debut in 2018, Juechter said that his engineers had taken the C7 as far as they could with the ZR1. Are they working on a C9 Corvette to sell alongside the mid-engine C8? If so, will it be built on a carbon fiber chassis? When it comes to Corvettes, things always evolve upward. – Scott

Corvette Chassis History, Pt 1 – C1 Chassis – HERE

Corvette Chassis History, Pt 2 – C2/C3 Chassis – HERE

Corvette Chassis History, Pt 3 – C4 Chassis – HERE

Corvette Chassis History, Pt 4 – C5 Chassis – HERE

Corvette Chassis History, Pt 5 – C6 Chassis – HERE

The Tadge Juechter & Harlan Charles Show! ’18 Recap & 2’19 Preview – VIDEO

Published on May 2, 2018August 30, 2018 by Scott

Harlan Charles & Tadge Juechter Hold Court at NCM’s Latest Michelin Bash Event: 2018 Recap & 2019 Preview

Dateline: 5.2.19 – The National Corvette Museum hosted their three-day annual Michelin NCM Bash from April 26 to April 28. Corvette product manager Harlan Charles and Corvette chief engineer Tadge Juechter delivered a 1-hour and 47-minute presentation recap of the 2018 season and a preview of what’s in store for 2019.

The event also included racing seminars, an update on the 1962 sinkhole Corvette, and using the C7’s navigation system. Chevrolet wants Corvette fans well informed and C7 owners completely up to speed with their car’s capabilities.

Special guests included former Bowling Green plant manager Wil Cooksey and early generation Corvette restoration expert, Kevin Mackay.

FYI, you can read my 2013 interview with Wil Cooksey in the November 2017 and January 2018 issue of Vette Vues; and my Kevin Mackay 2013 interview in the May 2018 and June 2018 issue of Vette Vues. Continue reading “

The Tadge Juechter & Harlan Charles Show! ’18 Recap & 2’19 Preview – VIDEO” →

Excellent Engineering, Stunning Performance, INSANE Speed!

Published on April 30, 2018August 30, 2018 by Scott

After a very long wait, the 2019 ZR1 delivers the goods!

Image: GM Archives

Dateline: 4-30-18 – Years ago, a good friend gave me a book about race car driving. Inside the cover Joe wrote, “The insanity of speed is only understood by those that cautiously extract it.” With a two-run average speed of 212-mph, the new ZR1 has entered the Insane Zone for production automobiles.

The 2019 ZR1 will go down as one of the all-time great Corvettes.- Scott

HOT Corvette Auction Action Starting TODAY!

Published on January 5, 2018January 5, 2018 by Scott

Several very interesting and unique Corvettes will be ON THE BLOCK at the Mecum Kissimmee and Barrett-Jackson Scottsdale Auctions over the next few weeks.

Dateline: 1.5.18, Images: Vette Vues, GM Archives, Mecum Auctions and Barrett-Jackson Auctions – “Auctions”, be they car or even farm auctions, are a lot of fun because it is the best example of “The Marketplace”. Things sell based on what people are willing to pay and not what sellers think something is worth. If a vehicle has a Reserve that isn’t met, that means that the Seller’s notion of the car’s value isn’t in alignment with the Market. If a vehicle has No Reserve, the Market will determine the vehicle’s value.

Bidding Wars and Feeding Frenzies can wildly drive prices up, making an auction a lot of fun to watch. On the other hand, excellent vehicles are often “Well Bought” at very good prices for a variety of reasons; rough condition, poor presentation, high production numbers, and cars that are just plane weird!

Two major car auctions are upon us with some very interesting and unique Corvettes that may or may not find new owners. The Mecum Kissimmee Auction starts today, January 5, 2018 and runs to January 14, 2018. The Barrett-Jackson Scottsdale Auction starts January 13, 2018 and runs to January 21, 2018

Of interest to Corvette and Chevy fans are the following cars;

January 12, 2018 – Mecum Kissimmee, 1969 Baldwin-Motion Phase-III GT Corvette. Lot F139

Continue reading “

HOT Corvette Auction Action Starting TODAY!” →

2019 ZR1 Corvette Makes a BIG SPLASH at Dubai Debut!!! – VIDEO

Published on December 26, 2017December 26, 2017 by Scott

Chevrolet Marketing truly out-did themselves with the Dubai debut of the 2019 ZR1 Corvette!!!

Dateline: 12-26-17 Images: GM Archives & Wiki Commons – Dubai is arguably the most spectacular place on the planet. Just look at the below images of the Dubai skyline at night. It shows what can be done with almost unlimited capital. The city looks like something out of a Star Trek film!

So what a better place to debut the new C7 ZR1 Corvette. Tadge Juechter said a subtle, but VERY interesting thing, did you catch it? He said that his Corvette engineering team did everything they could possible do to the C7 platform when designing and developing the ZR1. Hmmm.

When a chief engineer says that, do you know what that means??? Continue reading “

2019 ZR1 Corvette Makes a BIG SPLASH at Dubai Debut!!! – VIDEO” →

FINALLY! A Factory-Built ZR1 Convertible!!!

Published on December 24, 2017December 24, 2017 by Scott

The rumors were true! The new C7 ZR1 will be available as a coupe AND a convertible. TOP DOWN, OH, WOW!!!

Dateline: 12.24.17 – Images: GM Archives – Let’s briefly back up to 1990 in order to put the significance of the new C7 ZR1 convertible into perspective. When the first ZR-1 was released in 1990 there was no way that it could have been offered as a convertible. In order to even make the C4 a convertible, a large X-brace had to be added to the bottom of the C4’s chassis.

The C4 ZR1 had a nice run from 1990 to 1995. But when the C5 Z06 arrived, offering ZR-1-level performance at a fraction of the cost, the C4 ZR1’s star began to fade. What made the C5 Z06 such a track star was it’s strong structure. It was as it Corvette engineers discovered structural rigidity. Thanks to lessons learned in the C5-R Corvette Racing Team experience, the C6 Z06 took the concept of structural rigidity to a new level, and with an aluminum frame to boot!

Corvette performance fans were so jazzed over the C6 Z06 that no one was pinning for something more. So, when Chevrolet released the C6 ZR1, dripping with carbon fiber and the supercharged 638-horsepower LS9 engine, heads were spinning and Duntov sat up in his grave and said, “Vhat?!?!?” (There was no convertible version, but no one was asking for one.) The C6 ZR1 was everything that Corvette engineers could possibly do with the C6 platform.

When that happens, there’s only one thing left to do – start working on the next generation Corvette! Continue reading “

FINALLY! A Factory-Built ZR1 Convertible!!!” →

NEW!!! Corvette Report’s “Vette of the Month” Contest

Published on November 25, 2017November 27, 2017 by Scott

We are happy to announce the launch of Corvette Report’s “Vette of the Month” Photo Contest.
Here’s the deal.

Dateline: 11.25.17 – Send us your best photo of your Corvette and we will post it on our “Vette of the Month” photos page.

At the end of the month we will pick a winner, and announce it as a post here at Corvette Report.

The winner will get;

An “America’s Old Glory Sports Car” print of their year Corvette, signed and numbered by K. Scott Teeters.

PLUS! a feature story in Vette Vues Magazine.

After the story is published in Vette Vues, we will post it on CorvetteReport.com.

To enter, use the below Entry Form. Continue reading “

NEW!!! Corvette Report’s “Vette of the Month” Contest” →

THE KING IS BACK!!! The New 2019 ZR1 Corvette: The Facts

Published on November 15, 2017November 15, 2017 by Scott

Chevrolet just released “The Ultimate Front-Engine Corvette”!

Dateline: 11.15.17 (All images GM Archives, except where noted) The wait is FINALLY over! If you recall, the C7 ZR1 was supposed to make its debut last January at the Detroit Auto Show, but was a no-show. Since then, there was a steady stream of reports, rumors, and spy photos of heavily camouflaged ZR1 engineering mule cars. Lots of tease, no solid details.

The December 2017 issue Car and Driver is first off the line to splash the new ZR1 and I’m sure the rest of the automotive print publications will be dedicating their covers to what is now being called, “The Ultimate Front Engine Corvette!” (Note the reference to “front-engine” as a primmer for the mid-engine C8.) But yes, the new King will get boat loads of ink.

If you recall, Car and Driver splashed the C7 ZR1 on its April 2017 issue with the cover story, “25 Cars Worth Waiting For”. After that, it certainly seemed like, “any day now” the ZR1 would arrive. Then the LONG wait began. I recently said to my Corvette friend, Mike Wahl, Continue reading “

THE KING IS BACK!!! The New 2019 ZR1 Corvette: The Facts” →

ANNOUNCING! America’s Old Glory Corvette Tees & Sweats

Published on October 29, 2017October 30, 2017 by Scott

Show your Corvette passion
with a heap’n help’n of
patriotic American pride!

We have every year “Old Glory Corvette” layouts from 1953 to today,

available on tees, sweats and more!

Whatever year Corvette you own or love, we have a shirt for you.
Sizes Small to 2XL.

Prices start at just $13.95!

To start to order your America’s Old Glory Corvette shirt,
CLICK HERE. Continue reading “

ANNOUNCING! America’s Old Glory Corvette Tees & Sweats” →

C7 ZR1 Making THUNDERSNOW at Nurburgring!- Video

Published on April 20, 2017 by Scott

A C7 ZR1 in full-camo makes a daylight raid on Nurburgring in the snow and rain!

Looks like Car and Driver nailed the ZR1 on the April 2017 cover! Image credit: Motor1.com

Dateline: 4.20.17 – Before you know it, we’ll know it! Chevrolet and the media are teasing us like never before. Spy photos are now so clear and sharp that it looks like Car and Driver Magazine’s April 2017 cover nailed it.

Of course, we still don’t know what’s really lurking beneath all that carbon fiber. Will the ZR1 be powered by the next generation LT5 engine? Will the ZR1 have GM’s Active Aero System? Or, are they saving those gems for the mid-engine C8? Folks, we just do not yet know, which leads to delicious bench racing. Enjoy the below Corvette video.

Even without the LT5 or Active Aero goodies, a goosed-up LT4 sporting a bigger supercharger and intercooler could do the trick. Maybe Chevrolet engineers will employ Continue reading “

C7 ZR1 Making THUNDERSNOW at Nurburgring!- Video” →