Charting the Changes: GT1 vs. GT2 Corvette C6.R

GT1 Corvette C6.R

GT2 Corvette C6.R

Homologation Model

Corvette Z06

Corvette ZR1

Frame

Hydroformed steel

Hydroformed aluminum

Wheelbase (in)

105.7

Same

Length (in)

178.7

176.2 (-2.5)

Width (in)

78.7

78.6 (-0.1)

Weight (lb)

2580

2745 (+165)

Engine

7.0-liter LS7.R

2009: 6.0-liter LS7.R

2010: 5.5-liter GM V8

Horsepower

590

2009: 470 (-120)

2010: TBD

Torque (lb-ft)

640

2009: 535 (-105)

2010: TBD

Intake Air Restrictor (mm)

30.6

28.6 (-2.0)

Bore diameter (in)

4.180

Same

Crankshaft stroke (in)

3.875

3.32 (-0.555)

Transaxle

Xtrac 6-speed sequential

Same

Wheels

BBS magnesium, 18 x 12.5 (front); 18 x 13 (rear)

BBS aluminum, dimensions same

Tires

Michelin racing tires
300/32-18 (front)
310/41-18 (rear)

Same

Brakes

Carbon rotors and pads

Steel rotors, ceramic composite pads

Fuel capacity @ ALMS E85 spec (gal)

29

Same

Wing Chord (mm / in)

400 / 15.74

300 / 11.81 (-100 / -3.93)

Diffuser

Leading edge at rear axle centerline, with side plates and longitudinal fences

Leading edge at rearmost point of wheel opening, no side plates or fences

Splitter (mm)

80

25 (-55)

Telemetry

Yes

No

Windshield

Polycarbonate

Production laminated glass