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This Sledgehammer reached 254.76 mph at the Transportation Research Center (TRC) in Ohio and became the world’s fastest street-legal car for some time. It was built up by Reeves Callaway in Connecticut as an example of what was possible with the new ZR1 and and turbocharging its LT5 engine. The result was a 898 bhp coupe that still retained luxuries such as air conditioning and a radio. It got this power by using a NASCAR-spec block with Mahle pistons and a massive turbo.
1993 ZR-1 COrvette
The C4 ZR-1 Corvette, even some 30 years after its initial year of production, carries indisputable performance merit, the likes of which few can deny. In fact, the ZR-1 is often cited as the car which helped fend off threats, both foreign and domestic in origin, to the Corvette's elite performance car status. However, after only 6,939 ZR-1 Corvettes were built, and 6 years of production had passed, the program was terminated, falling victim to decisions regarding pricing.
1991 Corvette Owners Manual
This Owners Guide contains important information regarding the operation and maintenance of your 1991 Corvette. In order to obtain maximum enjoyment and usage from your car, we suggest that you familiarize yourself with the contents...
The actual Corvette Pace Car that served at the 79th running of the Indianapolis 500 was a near-stock LT1 Corvette Convertible, except for the mandatory safety features that were required by the Indianapolis Motor Speedway.  The Official Pace Car cam equipped with strobe lights, a special roll-bar, five-point safety harnesses for the driver and passenger and an on-board fire suppression system. Chevrolet built just three of the actual pace cars.