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 Chevrolet Corvette B2K photo

1988 Callaway Corvette B2K

Beginning in 1987, General Motors and Reeves Callaway offered a tuning package at specific Chevrolet dealerships known as RPO B2K. When this option was selected, the cars were sent from Bowling Green, KY to the Callaway factory in Old Lyme, Connecticut, where they received engine modifications and performance upgrades. Callaway and his team would perform an engine breakdown, add numerous internal modifications, and then bolt on their custom turbochargers. While the stock C4s offered 240 horsepower and 340 foot-pounds of torque, the Callaway modifications increased output to 382 horsepower and 562 foot-pounds of torque. For 1988 just 125 Callaway Twin Turbo Corvettes were produced and approximately 500 were converted between 1987 and 1991. The conversion cost an additional $26,995 over the price of a base model Corvette and the modified car was classified as a standard Corvette by the EPA so it was not subject to additional registration requirements.

A special Twin Turbo Corvette was tuned to produce 880 horsepower and was known as the Callaway Sledgehammer. It had a recorded top speed of 254.76 mph on Ohio's Transportation Research Center track making it the fastest road-going car at the time. It was the first automobile to achieve that top speed and be a fully functional road car. it had a leather interior, multi-speaker stereo, and working air conditioning. After its top speed run on October 26th of 1988, it was driven back to Callaway's Old Lyme, Connecticut shops on state highways. The 350 cubic-inch V8 developed its 880 horsepower at 6,250 RPM and 772 lb-ft of torque at 5,250 RPM.


by Daniel Vaughan | Sep 2020

Related Reading : Chevrolet RPO B2K Twin Turbo History

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....
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1988 Vehicle Profiles

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Performance and Specification Comparison

RPO B2K Twin Turbo

Year
Production
Wheelbase
Engine
Prices
58
96.20 in.
8 cyl., 390.00 CID., 390.00hp
$31,970 - $58,995

Industry Production

#1#2#3Chevrolet
1993Ford (1,026,338)Chevrolet (692,116)Honda (608,149)692,116
1992Ford (922,488)Honda (648,745)Chevrolet (647,227)647,227
1991Ford (1,162,256)Chevrolet (895,569)Honda (659,659)895,569
1990Ford (912,466)Chevrolet (785,918)Pontiac (641,820)785,918
1989Chevrolet (1,275,498)Ford (1,234,954)Pontiac (801,600)1,275,498
1988Ford (1,331,489)Chevrolet (1,236,316)Pontiac (680,714)1,236,316
1987Nissan (1,803,924)Chevrolet (1,384,214)Ford (1,176,775)1,384,214
1986Chevrolet (1,368,837)Renault (1,305,191)Ford (1,253,525)1,368,837
1985Chevrolet (1,418,098)Renault (1,322,887)Oldsmobile (1,192,549)1,418,098
1984Chevrolet (1,655,151)Renault (1,429,138)Ford (1,180,708)1,655,151
1983Renault (1,491,853)Chevrolet (1,175,200)Toyota (1,068,321)1,175,200

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