From autospies...

The motor looks very intersting

Model: HUMMER HX Concept
Body style / driveline: two-door, four-seat open-top, four wheel-drive
Construction: welded steel frame, electro galvanized steel
Engine type: 3.6L V-6 VVT (variable valve timing) with spark-ignition, direct injection
Displacement (cu in / cc): 217 / 3564
Bore & stroke (in / mm): 3.70 x 3.37 / 94 x 85.6
Block material: sand-cast aluminum with cast-in bore liners
Cylinder head material: cast aluminum
Valvetrain: DOHC, 4 valves per cylinder, variable valve timing (VVT)
Fuel delivery: direct high-pressure fuel injection
Compression ratio: 11.3:1
Horsepower (hp / kW @ rpm): 304 / 227 @ 6300 rpm (est)
Torque (lb.-ft. / Nm @ rpm): 273 / 370 @ 5200 rpm (est)
Fuel Type: unleaded regular or E85 ethanol
Transmission: Hydra-Matic 6L50 six-speed electronically control automatic transmission
Suspension: front: independent SLA, custom Fox Racing coil-over shocks; 2-in shocks, 2.5-in springs
rear: semi-trailing link, custom Fox Racing coil-over shocks; 2-in shocks, 2.5-in springs
Wheel travel (in / mm): front: 9 / 228
rear: 11/ 279
Brakes four-wheel disc; Brembo 6-piston calipers (front); Brembo 4-piston calipers (rear)
Rotor diameter x thickness (in / mm): 15 x 1.25 / 381 x 31.75
Wheel size & type: 20-inch x 9-inch
Tires: 35-inch custom Bridgestone Dueler
Wheelbase (in / mm): 103 / 2616
Overall length: 171 / 4343
Overall width (in / mm): 81 / 2057
Overall height (in / mm): 72 / 1829
Track (in / mm): 67 / 1702 (front); 68 / 1727 (rear)
Minimum ground clearance front (in / mm): 13 / 320
Approach angle (degrees): 56
Departure angle (degrees): 51
Breakover angle (degrees): 25
Grade capability (percent): 60
Side slope capability (percent): 40
Water fording

 

nice HP... but did you see where its making it? 6300 rpms...