This is from a spec sheet dated October 1, 2001. Only a very few prototypes had been built at that point.

GENERAL:
Model: 2003 HUMMER H2 SUV
Body style: Four-door sport-utility, body-on-frame construction
Driveline: Front-engine, full-time four-wheel drive
EPA vehicle class: Full-size sport-utility
Assembly Plant: Mishawaka, Indiana

POWERTRAIN:
Engine Type: Vortec 6000 V8 - 6.0-liter V8 with cast iron block, cast aluminum cylinder heads, sequential fuel injection
Displacement (cu in / cc): 364 / 5967
Bore & stroke (in / mm): 4.00 x 3.62 / 101.6 x 92.0
Valvetrain: OHV
Compression ratio: 9.4:1
Horsepower (SAE hp): (est.) 325 @ 5200
Torque (lb-ft / Nm): (est.) 385 @ 3600
Transmission type: 4L65-E 4-speed auto
Gear ratios (:1):

    * 1st - 3.06
    * 2nd - 1.62
    * 3rd - 1.00
    * 4th - 0.69
    * Rev. - 2.29

Stall Ratio: 1.90
Final Drive (axle) ratio: 4.10
Low Range Lock gear reduction: 2.64
Crawl Ratio: 33.1

EXTERIOR DIMENSIONS:
(in / mm, except where noted):
Wheelbase: 122.8 / 3118
Overall vehicle length: 189.8 / 4819.7
Tread (front): 69.4 / 1762.8
Tread (rear): 69.4 / 1762.8
Vehicle width excluding mirrors: 81.2 / 2062.6
Overall vehicle height @ curb weight (est.): 77.8-82 / 1977-2080 (with & without roof rack)

GROUND CLEARANCE:
Angle of approach (degree) (est.): 39.8º - 43.6º
Angle of departure (degree) (est.): 35.9º - 39.7º
Ramp breakover angle (degree) (est.): 24.3º
Axle differential to ground (in / mm): 9.4 / 238
Min. running ground clearance (in / mm)(est.): 9 / 229

CHASSIS/SUSPENSION:
Front: Independent with torsion bars; 46mm monotube gas shocks; 35.9mm front stabilizer bar Rear: 5-link variable-rate coil spring; optional self-leveling air spring (w/RPOZM6); 46mm nonotube shocks, 30mm stabilizer bar.
Traction Control: Brake-controlled, single-wheel control capability with rear axle locking differential
Steering type: Variable ratio, integral power; recirculating ball type
Ratio: 15/13:1
Steering wheel turns (lock-to-lock): 3.25
Turning circle, curb-to-curb (ft / m)(est.): 44.3 / 13.5
Brakes: Four-wheel disc, four-wheel/four channel ABS, dual piston calipers w/Dynamic Rear Proportioning
Wheel size & type (in): 17.0 x 8.5 cast aluminum
Tire size & type:

    * Standard: Lt285/70R17 all-terrain
    * Optional: Lt315/70R17 off-road

GVWR, standard (lbs / kg): 8600 / 3901
Base curb weight (lbs / kg)(est.): 6,400 / 2909
Trailer towing maximum (lbs / kg)(est.): 7000 / 3182
Winch capacity (lbs / kg)(est.): 9000 / 4091
Fuel tank capacity (gals / liters)(est.): 33 / 124.9

PERFORMANCE:
Performance: 0-60 mph - tbd (<11 sec.)
Range (Minimum): 350 miles +