The 1988 Corvette Challenge
Series was created by John Powell of Powell Motorsports.
Below are some of the specifications that made them
unique from regular GM Corvettes.
Chevrolet built fifty-six identical Corvettes for
the first year of the Corvette Challenge in 1988.
Each wasequipped exactly the same, with all standard
equipment, the 245hp Cross-Fire fuel injection engine,
Doug Nash 4+3manual transmission, Z51 Performance
Handling Suspension package, AC3 6-Way Power Driver
Seat, UU8 Delco-Bose Stereo, Z6A Side Window and Side
Mirror Defog System and 24S Blue Tint Glass Removable
Roof Panel. The Corvette Challenge cars differed only
in color and, since Bowling Green built Corvettes
in batches of the same color, the Corvette Challenge
Cars did not have sequential chassis numbers.
Protofab in Wixom, Michigan was selected by Corvette
Challenge series organizer Powell Motorsports to race
prepare the cars. Each received the same complement
of race equipment consisting of a full roll cage,
onboard fire extinguisher system, racing seats, Bilstein
shock absorbers and special wheels along with other
detail changes to meet the demands of highly competitive
racing through a nice race season. In addition to
the $33,043 price of a Corvette Challenge car, entrants
paid Powell Motorsports $15,000 for the cost of Protofab's
race prep and the season's entry fee.
During the 1988 season Corvette provided the Challenge
cars with replacement engines with equalized performance
which were factory sealed to maintain the series'
focus on competition among essentially equal cars.
The 1988 Corvette Challenge cars had
a unique option code from the factory, it was "B9P".
The documentation from GM clearly indicates that the
cars were produced for the express purpose of racing
in the SCCA Corvette Challenge Series. There is documentation
that identifies by serial number, all Corvettes produced
with these option codes. Therefore, it is relatively
easy to validate the authenticity of any Challenge