These specs are also found on the production spec sheet found here:
http://www.5thgen.org/forum/showthread.php?t=7001
LS3 / L99 - 6.2L V8
Displacement: 6162cc / 376ci
Bore x Stroke: 4.06" x 3.62" / 103.25mm x 92mm
Block Material: cast aluminum w/ cast-in-place iron bore liners
Cylinder Head Material: Aluminum
Valvetrain: valve-in-head; two valves per cylinder; roller lifters; L99 - Active Fuel Management
Ignition System: high-energy distributorless ignition; solid state direct-fire ignition w/ coil near plug and integrated ignition
Fuel Delivery: returnless, multi-port fuel injection
Compression Ratio: 10.7:1
Horsepower: LS3 - 422 @ 5000rpm, L99 - 400 @ 5000rpm
Torque: LS3 - 408 @ 4500rpm, L99 - 395 @ 4500rpm
Maximum Engine Speed: LS3 - 6600rpm, L99 - 6000rpm
Recommended Fuel: Premium Unleaded
Emissions Controls: evaporative system, close-coupled catalytic converters, positive crankcase ventilation, electronic throttle control
Fuel Economy (estimate): 23MPG Highway - Auto Trans
http://www.5thgen.org/forum/showthread.php?t=7001
LS3 / L99 - 6.2L V8
Displacement: 6162cc / 376ci
Bore x Stroke: 4.06" x 3.62" / 103.25mm x 92mm
Block Material: cast aluminum w/ cast-in-place iron bore liners
Cylinder Head Material: Aluminum
Valvetrain: valve-in-head; two valves per cylinder; roller lifters; L99 - Active Fuel Management
Ignition System: high-energy distributorless ignition; solid state direct-fire ignition w/ coil near plug and integrated ignition
Fuel Delivery: returnless, multi-port fuel injection
Compression Ratio: 10.7:1
Horsepower: LS3 - 422 @ 5000rpm, L99 - 400 @ 5000rpm
Torque: LS3 - 408 @ 4500rpm, L99 - 395 @ 4500rpm
Maximum Engine Speed: LS3 - 6600rpm, L99 - 6000rpm
Recommended Fuel: Premium Unleaded
Emissions Controls: evaporative system, close-coupled catalytic converters, positive crankcase ventilation, electronic throttle control
Fuel Economy (estimate): 23MPG Highway - Auto Trans