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The 1986 Corvette Indy Prototype was developed beyond clay modeling to the point of a fully-functioning, drivable car, though it was clearly understood that this car would never evolve beyond the prototype stage.  Like the clay mock-up before it, development of the mid-engine Indy prototype began in 1985, pulling design cues from its predecessor.
While it was understood that the Corvette Indy Concept would never be fully realized as a production vehicle, it paved the way for the creation of the twin-turbo CERV III. The CERV III (Chevrolet Engineering Research Vehicle No. 3) was introduced in January, 1990 at the International Auto Show in Detroit, Michigan. Like the latter iteration of the Corvette Indy Concept car, the CERV III was fitted with a 5.7 Liter, 32-valve, dual-overhead cam LT5 engine that featured twin turbochargers. It had 650 hp and 655 lb/ft of torque and top speed of 225 mph.
How do you beat a slew of Fox-Body 5.0 Mustangs that seemingly dominated the roads in the late '80s? You take a 454 cu.-in. big-block engine and stuff into a C4 Corvette and call it "Big Doggie". An experimental vehicle used to determine how to convert from a small block to a big block. Its 454 big block V8 along with its orange paint make this high horsepower engineering study a one-of-a-kind standout in Corvette history. The car had as much HP as the '90 ZR-1 did and it was named "ZR-2" or "Big Doggie". Old dog, new tricks joke?
Though the first two prototype cars to carry the Astro namesake were relatively well known, the third entry in this conceptual saga was somewhat obscure and significantly more bizarre. At the 1969 Chicago Motor Show, Chevrolet unveiled the Astro III which was a gas-turbine prototype that featured a tricycle wheel arrangement.
The engineers came up with a unit-body construction that relied on strength coming from the side sills of the chassis. These contained the exhaust which probably easily overheated the cockpit, especially in the coupe. Unfortunately, GM fitted fake V6 engines in both cars with a concept valve train that included dual overhead camshafts.
In 1959, the bones of the SS were revived when Bill Mitchell secretly funded the Stingray race car. Mitchell purchased the chassis of the 1957 SS race car mule for $500 and had a design team create a new body. Mitchell felt the first generation Corvettes were too rounded and soft, so the Corvette Sting Ray Racer featured a sharper body edge that made it work.
If you were a senior GM employee, one of the perks was being able to have your own custom built for you. Bill Mitchell was known for it, but this SR-2 Lookalike was built for GM president Harlow Curtis, who was president of GM during the period that the SR-2 were developed. The lookalike was built by GM’s styling staff and presented to him.
Stingray Atlantic Concept
Chevyt presented a trio of Corvette Stingray concepts. Many of the items fitted to the cars are available through the Chevrolet Accessories and Chevrolet Performance catalogs. Designed with cruising in mind, the Stingray Atlantic convertible concept features stunning Blade Silver paint, while the Stingray Pacific concept is more race-inspired and the Stingray Gran Tourismo was created to commemorate the 15th anniversary of the Gran Tourismo video game.
Chevrolet Corvette Mulsanne Showcar, 1974. Created by Bill Mitchell, the Mulsanne was a development of several previous Corvette “specials”, the 1969 Aero and the 1970 Scirocco. By 1974 it had been bored out to 454 ci and fitted with an experimental Rochester fuel injection system, it also had a periscope rearview mirror system.
To clothe the 1965 mid engine Corvette chassis, the designers at Styling Staff proposed a much more radical shape than Zora Arkus Duntov, the main force behind a mid engine Corvette, had in mind. It would have provided rear vision solely through a periscope. The design had bold air intakes at the rear and a split windscreen that lifted up with the gullwing doors.
This one-off 1961 Vignale Corvette was built for the 1961 Salon de l'Automobile in Paris, France. It was based on a 1960 Corvette chassis and built by Italian coachmaker Carrozzeria Vignale. The body was designed by Gordon Kelly.
In 1977, GM chairman Thomas Murphy gave the Aero-vette the green light. It was approved for production, and slated to be released in 1980. Despite being greenlit for 1980 production as the upcoming C4 Corvette, Arkus-Duntov's replacement Dave McLellan decided for a number of reasons (cost and tradition among them) to stick with the Corvette's tried and true front-engine configuration
In the late 80s, Chevy was developing what some dubbed a ‘Super Vette.’ But the 1989 debut of the Dodge Viper sent GM engineers on a new path to develop a ‘Viper-Killer.’ It started with a factory test mule and the experiment was to see how a ZR-1 would perform if given more power and less weight. It was so fast it was called "Snake Skinnner", for it's ability to beat the Viper and Cobra.
One of the most beautiful concept cars created by GM was the XP-822 later called the Aerovette. Zora Arkus Duntov and his engineers had originally built two predecessors during 1969. John DeLorean, Chevrolet's general manager, felt the program was too expensive and canceled the car.
"Hot" is an apt description of this special coupe's drivetrain. Its 6.6-liter engine produces 512 horsepower and 523 lbs.-ft. of torque. Mated to a four-speed automatic transmission and featuring a 3:41 geared limited slip differential and four-wheel independent suspension, this "Vette takes a backseat to no other vehicle. The White Shark Corvette also features power rack-and-pinion steering to precisely pilot this vehicle and four-wheel disc brakes with ABS.
When first introduced to the world by Pontiac in 1964, the car showed so much promise that Chevrolet (allegedly) put a swift end to its development to prevent its production from hindering the sales of the Corvette.  Afterall, with the introduction of the 1963 Split-Window Corvette, Chevy was finally seeing an increase in sales, something lacking for most of the first-gen.
There were several successful attempts to build a convertible ZR-1, most of them by private people. The DR-1 was a GM prototype to test the structural integrity of the ZR-1 chassis when it would be topless. The car was built by American Sunroof Corporation (ASC) for Don Runkle, who was the vice-president of Advanced Engineering Staff, which explains the “DR-1” designation. It was a standard convertible transformed to ZR-1 specs.
The XP-895 was one in a series of experimental Corvettes built to explore alternative engine placements and chassis layouts. This vehicle features an 400 cid small block V8 mounted transversely in a mid-engine position. It utilizes a Turbo Hydramatic transmission via a bevel gear box. The body panels are all aluminum.
CERV IV was nothing more than a C4 with the all new powertrain and interior in it. Read the commentary of a car magazine reporter: "We suspect that the first, very early prototypes of the all-new, Gen III ran on the dynos at GM Powertrain sometime in the early spring of 1993. In-vehicle testing began at the GM Milford Proving Ground in the first week in May of 1993 with the "Chevrolet Engineering and Research Vehicle IV-A".
In 1983, Bertone began to explore the possibility of approaching the US market with the Ramarro, an exercise in applied technology around mass-produced mechanics. The Ramarro, which means "green lizard" in Italian, was created on the chassis of the well-known Chevrolet Corvette, and the underlying concept aimed to modify the layout of the mechanical components.
This little concept mounted a 180-horse Wankel transversely, driving a new automatic transaxle being developed for the forthcoming X-body Citation. Designed by GM's Experimental Studio and built in 6 months on a modified Porsche 914 chassis by Pininfarina, the 2-Rotor made its debut at the 1973 Frankfurt show.
The Stingray that never was. The stretched version of this new Corvette model for 1963 has rear seating and was built as ordered by Chevrolet chief Ed Cole. Larry Shinoda designed this coupe, that never went into production because the demand for the two seated Stingray already was overwelming. A running prototype of a 2+2-seat C2 Corvette intended to compete with the Ford Thunderbird was built, but the project was canceled.
Built for outright top speed, this prototype Corvette was built by Zora Duntov. He successfully piloted the car to a two-way average speed of 150 mph in January of 1956 at Daytona. Later two more similar cars were built for the 1956 Daytona Speed Weeks in February. After initial resistance from Engineering, Duntov’s cam was delivered to the Proving Ground.
The Astro II was one of the most significant case studies of Duntov’s outright refusal to let his mid-engine dreams die, and as such, ultimately entered the history books as a precursor to the eventual mid-engine, C8 Corvettes of today. The Astro II was designed in a way that was more representative of the Corvette’s typical styling cues, than that of The Astro I.
For the 2012 Grand-Am season, Chevrolet was the first to unveil it's new DPG3 bodywork. This Corvette body kit will be built by Pratt & Miller and will be sold to customer teams. These body kits will fit on any existing Coyote, Riley, or Dallara chassis. This Corvette DP will be powered by a 5.0L V8 making 530BHP @ 7,000rpms and 450ft-lbs at 5,500rpms. 
GM’s 1950s Motorama-mobiles were mostly pretty out-there, with flamboyant fins, rocket-inspired skegs and cockpits, and other flights of wild imagination. Frankly, many of them were a bit absurd and even childish. But there were a few that were somewhat down to earth, even rather brilliant, like this 1955 Chevrolet Biscayne.
Duntov laid out three design concepts that took decades to implement. The first was his proposal for the 1957 Q-Corvette. This design called for the following: an all-aluminum, fuel-injected small-block engine, four-wheel independent suspension, four-wheel disc brakes, and a transaxle. This design concept arrived in 1997 as the C5.
Chevrolet Corvette ZR-1 Spyder prototype, 1991, by ASC. An experimental styling prototype ordered by Don Runkle, Chevrolet’s chief engineer, to see how far the ZR-1 might be pushed in convertible form. The windshield was chopped in half and the seats were mounted directly to the floorpan. The black example in the National Corvette Museum was originally painted Sebring Silver with a Neutrino Yellow interior.
The GS II (Grand Sport II) was a test vehicle completed in late 1963 by Chevrolet Engineering Center (C.E.C.). The chassis was constructed of spot-welded sheet steel and was fitted with narrow tires. With only minor testing done at GM’s test facility in Michigan, the vehicle was shipped to Texas to the Chaparral Cars test facility.