Callaway produced 508 twin turbo cars between 1986 and 1991. The twin turbo car could be ordered direct from the Chevrolet dealership by checking RPO B2K. The B2K option was an engine-option-only at a $33,000 adder with body, paint and suspension options being additional. Among the engine configurations were the 403 hp version which offered nearly 600 lb ft of torque

In 1991, at the Los Angeles Auto Show, Reeves Callaway introduced a Speedster version of the Chevy Corvette. The vehicle gracing the display was a green ZR1 that had several modifications both mechanically and cosmetically. The green ZR1 had a chopped windscreen, a blue leather interior, rode on 18-inch wheels, and had no side mirrors. Equally impressive was the twin-turbocharged engine that offered an astonishing 450 horsepower.

To cope with the turbochargers, the Speedster was given a competition suspension with coil overs, and adjustable shocks. Stopping power was provided by Brembo brakes which gripped 17-inch 3-piece OZ racing wheels. The prototype car, chassis number 000, had 18-inch wheels.

The Speedster was designed by Paul Deutschman. The carbon fiber body had twin power bulges which aligned with the headrests. There was no top - it was an open bodied car. In the front were special air inlets to provide air to the intercoolers.

Callaway planned on producing 50 examples, though only 12 units were ever produced. Pricing was around $150,000.

1991 Callaway Corvette IMSA Supercar Series #3

Coupe

A very rare Corvette indeed with only 1 Twin-Turbo Callaway racecar created. Reconditioned after its last race, this is the only Twin-Turbo Corvette to have competed in IMSA or SCCA Pro Racing.

by Dan Vaughan

1991 Callaway Corvette Speedster Car #10

Convertible

This very special Corvette was purchased by Chip Miller in celebration of his 50th birthday! The 1991 Callaway Twin-Turbo Speedster in this collection is 1 of only 12 Speedsters ever constructed. The black pearl metallic paint and power red interior, in addition to many other options, were hand picked by the Miller family in a special meeting with Reeves Callaway.

Between 1987 and 1991, General Motors offered a Factory Optioned Twin Turbo Corvette known as the Callaway Twin Turbo, also known as the RPO-B2K. These Corvettes were outfitted with special enhancements by Callaway. After Callaway worked their magic, they were returned to GM to be sold as a factory car with the B2K order option. The standard Corvette, plus the additional Callaway upgrades, drove the price tag over the $100,000 price tag, making it the most expensive factory production United States car in history at the time.

During the five-year production run, there were less than 500 examples produced. For 1992, the new LT1 motor was standard equipment on the Corvette, and Callaway found it could not handle the Twin Turbo setup, and the sales were not adequate to validate the expense to perform the upgrade. Thus, the RPO-B2K ended.

The RPO-B2K offered around 400 horsepower and 500 foot-lbs of torque from the 350 cubic-inch engine (figures varied from year-to-year.) A few Aerobody cars were produced with the B2K option, these were basic body kits that were put on the car. Dymag wheels were also offered on the Callaway, further distinguishing the Callaway cars. With the upgrades, the Callaway could reach 190 MPH and could travel the quarter-mile in 12.8 seconds.

by Dan Vaughan