The Corvette Grand Sport is new for the 2010 model year, replacing the previous Z51 package. Available in either coupe or convertible models, the Grand Sport features the LS3 6.2L V8 engine with either a 6-speed manual or 6-speed automatic transmission, Z06-style front splitter, a wider track and "trademark" fender flares, a revised suspension and specific gearing. (Fig. 7)
High Pressure Oil Filter
Grand Sport coupe models equipped with a manual transmission use a dry-sump oiling system, differential cooler and a rear-mounted battery.
The dry sump system (RPO Z52) requires a high pressure oil filter. During an oil change, use an Ultraguardâ„¢ Gold UPF48R oil filter (part number 12626224). This filter has a higher burst strength, which is required because the oil pump produces greater volume and high system oil pressure. It is the same high pressure oil filter as used on the ZR1 and Z06 models. (Fig. 8)
TIP: The internal components are the same in both the UPF48R and PF48 oil filters. The UPF48R can be used in applications where the PF48 is specified.
High Performance Brakes
The Grand Sport also features upgraded brakes (RPO J56), the same as found on the Z06. It has 14-inch (355 mm) front rotors with six-piston calipers and 13.4-inch (340 mm) rear rotors with four-piston calipers. (Fig. 9)
Front replacement pads are part number 19153019 and rear placement pads are part number 19153020.
History of the Grand Sport
Legendary Corvette engineer Zora Arkus-Duntov led the development of the first Corvette Grand Sport as a lightweight and race-ready production model, based on the styling of the 1963 Corvette, to go up against the Shelby Cobra. The Grand Sport engine program featured a special, 377-cubic-inch small-block V8 with side-draft carburetors.
Although never officially sanctioned by GM, five hand-assembled Grand Sport prototypes saw extensive racing experience throughout the 1960s in the hands of "private" racers who had strong contacts within Duntov's engineering circle. Ultimately, the project was dropped due to GM's agreement to stay out of manufacturer-backed motorsports.
- Thanks to Brad Thacher
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