Sledgehammer
Chevrolet Corvette C4 · 1988The fastest street-legal Corvette ever built. 254.76 mph — then drove home. A record that stood for 25 years.
Value · Priceless (museum piece)

The Corvette, engineered further
Philosophy
Reeves Callaway was the son of golf magnate Ely Callaway, an SCCA champion who built his first turbo kit on a BMW 320i borrowed from Bob Bondurant's driving school. That kit became a product line, and in 1977 Callaway Cars was born in Old Lyme, Connecticut. When Callaway turned his attention to the Corvette, he created the most credible Corvette tuning operation in history.
In 1987, Callaway's twin-turbo package was so good that Chevrolet offered it as a factory option — the legendary B2K. But the company's defining moment came in 1988 with the Sledgehammer: a street-legal Corvette that drove nearly 700 miles to a test track in Ohio, ran 254.76 mph, and drove home. That record stood for 25 years and remains the benchmark of what Callaway represents — engineering that blends raw speed with genuine, drive-it-anywhere reliability.
By the Facts
Iconic Builds
The fastest street-legal Corvette ever built. 254.76 mph — then drove home. A record that stood for 25 years.
Value · Priceless (museum piece)
The modern flagship. 757 hp supercharged C8 with Callaway's signature engineering and factory-backed warranty.
Value · $110,000–$135,000
The only tuner forced-induction system ever offered as a factory Corvette option. Order it from your Chevy dealer in 1987.
Value · $40,000–$90,000 (collector)