The then-new C4 generation Corvette was good, but any serious belief it would give these models a run for their money was a joke. Yet in 1988, Callaway Cars, a small American tuning company led by ...

Customers could order a 1987 or later C4 Corvette with over 390 horsepower, 150 more than the car's stock 240 horsepower output. In 1988, Callaway created The Sledgehammer, the world’s fastest ...

According to the dyno (right), Callaway's Corvette reaches its peak 627 hp at 6,400 rpm, an additional 167 hp over the standard car and 23 hp less than the upcoming Z06.The Callaway's max 610 lb ...

Prices shown are the prices you can expect to pay for a 2012 Callaway Cars Inc Corvette Grand Sport SC606 2 Door Coupe across different levels of condition. Edit options.