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ALMS Chevrolet Corvette C6R Specs

From GM Racing:

Corvette Racing Goes Green with E85 Ethanol Fuel in 2008 American Le Mans Series

Corvette Racing is powered by E85 ethanol, a high-octane, renewable alternative fuel, in the 2008 American Le Mans Series. As part of the series’ “green racing” initiative, the most successful team in ALMS history is using a blend of 85 percent ethanol and 15 percent gasoline in the demanding arena of endurance road racing.

After winning its seventh consecutive GT1 manufacturers and team championships in 2007 using E10 (10 percent ethanol), Corvette Racing’s twin Compuware C6.R race cars made the transition to E85 for the 2008 season.

2008 Corvette Engine Specifications

2008 Corvette Coupe 2008 Corvette Z06 2008 Corvette C6.R
Displacement (L / ci): 6.2 / 376 7.0 / 427 7.0 / 427
Horsepower: 430 @ 5900 rpm 505 @ 6300 rpm 590 @ 5400 rpm
Torque (lb-ft): 424 @ 4600 rpm 470 @ 4800 rpm 640 @ 4400 rpm
Bore diameter (mm / in): 103.25 / 4.06 104.8 / 4.125 106.2 / 4.180
Crankshaft stroke (mm / in): 92 / 3.62 101.6 / 4 98.42 / 3.875
Deck height (mm / in): 235 / 9.24 235 / 9.24 235 / 9.24
“V” angle (deg): 90 90 90
Cylinder bore spacing (mm / ci): 111.7 / 4.40 111.7 / 4.40 111.7 / 4.40
Valvetrain: pushrod with overhead steel valves pushrod with overhead titanium valves pushrod with overhead titanium valves
Valves per cylinder: 2 2 2
Camshaft drive: chain chain chain
Cylinder case material: aluminum aluminum aluminum
Cylinder liners: dry iron dry iron none
Cylinder head material: aluminum aluminum, CNC ported aluminum, CNC ported
Lubrication system: wet sump dry sump dry sump
Fuel system: sequential EFI sequential EFI sequential EFI
Throttle system: throttle body throttle body individual runner
Fuel: premium unleaded gasoline recommended premium unleaded gasoline required E85 ethanol (85 percent ethanol, 15 percent gasoline)

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