Mysterious Corvette CERV-IVb Prototype
An ordinary fourth-generation Corvette rarely attracts attention, but this specimen is an exception. It not only stands out among others but is the result of a secret project developed outside the company’s official plans.
Creation History
In 1993, the Corvette development team understood the need to start work on the C5 model, which debuted in 1997. However, General Motors management was skeptical about significant changes in the design, so the engineers decided to implement the project secretly. They created a test prototype by installing a fifth-generation chassis on a modified C4 body.
The result of these efforts was the CERV-IVb — an experimental car that still retains original stickers from the GM test track on its windshield.
Design and Construction Features
Most of the work on this car was aimed at evaluating structural and functional solutions that were to define the C5 model. The hood was executed in the style of an early C5 version, where the fenders and headlights remain stationary when it is opened.
The specially designed front part of the body with a wide central grille provided an idea of the future Corvette’s design even before it was seen outside the test track.
Due to Environmental Protection Agency requirements, Chevrolet had to rethink the location of the fuel door, so the CERV-IVb received a side fuel door years before it appeared on production models.
Interior and Technical Specifications
The rear of the body was modified to test the trunk compartment of the future C5 convertible. The interior combines early C5 components and some elements similar to the Pontiac Firebird instrument panel.
The car is equipped with a 5.7-liter LT1 engine that produces 300 horsepower, a six-speed manual transmission, and adaptive FX3 suspension. The engineers also installed updated mounts for the power steering pump and generator, powerful brake mechanisms on all wheels, an additional rigid roof, and 17-inch BBS wheels with a golden mesh.
Fate of the Prototype
General Motors transferred the CERV-IVb to the Jaeger family in 2009, and since then the car has been preserved as a rare example of Chevrolet’s secret engineering developments. It became a bridge between two generations of Corvette and embodies an internal story that was never planned to be shown outside GM’s test tracks. Now, anyone with sufficient funds will be able to purchase it at the Mecum auction in Kissimmee on January 17th.
This prototype not only demonstrates technological progress but also emphasizes the importance of experiments in automobile manufacturing. Its story reminds us that even the boldest ideas are often born away from public attention, and their implementation requires not only engineering talent but also the courage to go against the system. Such projects remain testimony to the innovations that shape the future of the automotive industry.

