Corvette enthusiasts can recite the C4 ZR-1‘s particulars without prompting. Considerably fewer can account for the 1988 Corvette that ran 410.00 km/h (254.76 mph) around an Ohio test oval two full model years before the ZR-1 reached showrooms, then drove home to Connecticut with the air conditioning running.
Reeves Callaway had been circling that number for some time. Car and Driver’s 1987 top speed shootout, staged under the title “A Gathering of Eagles,” provided the venue, and a twin-turbocharged C4 nicknamed Top Gun provided 372.0 km/h (231.1 mph). Respectable company for a Corvette in 1987. Insufficient for a man who could see what the chassis still had in reserve.
Callaway’s position within the industry was unusual and worth understanding. Chevrolet had granted his company an order code, RPO B2K, which permitted any dealer to sell a twin-turbo Corvette with factory warranty coverage intact. No other American tuner enjoyed anything comparable, and the arrangement kept a steady supply of new C4s flowing into Old Lyme. The 51st B2K chassis of the 1988 model year never joined the customer queue. Callaway kept it.
The brief he wrote for that car was deliberately punishing. Any well-funded shop can approach 400 km/h by discarding glass, carpet and comfort. Callaway proposed to exceed 250 mph in a Corvette that retained electronic climate control, a Bose stereo, power seats and enough docility to sit in a toll plaza queue. The contradiction was the entire point of the exercise.
