The Callaway "Sledgehammer", a heavily modified 1988 Corvette C4, became the fastest street-legal car in the world with a top speed of 254.76 mph. Not only did it beat every exotic of its era ...

Though it never became as famous as it deserved, the Guldstrand GS-90 was a C4 Corvette taken as close to perfection as ...

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.