The Callaway Sledgehammer Corvette Is an American Icon

During "Project Top Gun" in 1988, Callaway's 898-horsepower C4 set a new record at 254.76 mph.

Callaway Cars

Corvette legend Reeves Callaway built the Sledgehammer as a testbed for making streetable, reliable power with turbocharged V8s. But, he also wanted to set a new performance benchmark, commissioning Canadian Paul Deutschman to come up with a low-drag C4 shell known simply as the AeroBody.

Callaway's team took care of the mechanical modifications, which included a fully built 350ci Chevy V8, fed by a pair of turbos running 22 lbs of boost. The resulting 898 horsepower and 772 lb-ft of torque made the SledgeHammer a 254.76-mph Corvette. Impressive from a car that retained its full interior, including power windows and locks, an audio system, electronic air conditioning and power sport seats, a roll cage.

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What's more, the Sledgehammer took a 1400-mile road trip from Callaway's shop in Connecticut to Ohio and back, with John Lingenfelter flooring it midway at the TRC proving ground. Too bad they couldn't take home Goodyear's custom tires.

The record was set at 254.76 mph, Deutschman continued to work with Callaway for years to come, and the Sledgehammer's AeroBody saw limited production.

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