2008 Hummer H3 Alpha Announced

Model:

HUMMER H3 Alpha

Body style / driveline:

4-door, 5-passenger hard-top 4-wheel-drive

EPA vehicle class:

midsize sport utility

Construction:

welded steel frame, electro galvanized steel

Manufacturing location:

Shreveport, La.

Key competitors:

Toyota 4Runner; Jeep Grand Cherokee, Jeep Wrangler Rubicon Unlimited, Toyota FJ Cruiser, Nissan Pathfinder, BMW X3

Type:

5.3L V-8

Displacement (cu in / cc):

325 / 5328

Bore & stroke (in / mm):

3.78 x 3.62 / 96 x 92

Block material:

cast aluminum

Cylinder head material:

cast aluminum

Valvetrain:

OHV, 2 valves per cylinder

Ignition system:

coil near plug, composite intake manifold, platinum-tipped spark plugs, low-resistance spark plug wires

Fuel delivery:

sequential fuel injection

Compression ratio:

9.9:1

Horsepower (hp / kW @ rpm):

295 / 224 @ 5200*

Torque (lb.-ft. / Nm @ rpm):

317 / 438 @ 4000*

Recommended fuel:

regular unleaded

Maximum engine speed (rpm):

6000

Emissions controls:

close-coupled catalytic converter, Quick Sync 58X ignition, returnless fuel rail, fast-response O² sensor

Fuel economy (mpg city / hwy):

TBD

Hydra-Matic 4L60

Type:

4-speed electronically controlled automatic

Gear ratios (:1):

First:

3.06

Second:

1.63

Third:

1.00

Fourth:

0.70

Reverse:

2.29

Stall ratio:

1.90

Final drive axle ratio:

4.10

Low range lock gear reduction:

2.64 std, 4.03 opt

Crawl ratio (range):

33:1 std, 50:1 opt

Front:

independent SLA torsion bar, 46-mm monotube gas-charged shocks, 36-mm tubular stabilizer bar

Rear:

“Hotchkiss” design multileaf, semi-elliptic dual-stage leaf spring, 46mm mono-tube gas-charged shocks, 25mm rear solid diameter stabilizer bar

Steering type:

power-assisted rack-and-pinion, with tri-bushing mount design

Steering ratio:

17:1

Steering wheel turns, lock-to-lock:

3.25

Turning circle, curb-to-curb (ft / m):

37 / 11.3

Type:

electro-hydraulic power 4-wheel disc, 4-wheel anti-lock, four-piston opposed (fixed) front caliper/single piston sliding rear caliper with Dynamic Rear Proportioning

Rotor diameter x thickness (in / mm):

front: 12.4 x 1.1 / 315 x 28
rear: 12.28 x 0.47 / 312 x 12

Total swept area (sq in / sq cm):

front: 69.4 / 448
rear: 51 / 328

Wheel size & type:

16-inch x 7.5-inch aluminum

Tires:

std: P265/75R16 all terrain steel-belted Goodyear radials opt: LT285/75R16 on-/off-road Bridgestone radials (with ZM6 Off-Road Adventure package)

Spare tire:

full-size spare

Wheelbase (in / mm):

111.9 / 2842

Overall length w/ spare and 33-inch tires (in / mm):

186.7 / 4742

Overall width (in / mm):

85.5 / 2170.6

Overall height (in / mm):

74.5 / 1893

Track (in / mm):

front: 65 / 1651

rear: 65.5 / 1664

Minimum ground clearance front (in / mm):

w/ 33-inch tires: 9.1 / 231
w/ 32-inch tires: 8.5 / 216

Step-in height (in / mm):

Front:

w/ 32-inch tires: 24 / 609.2
w/ 33-inch tires: 24.7 / 628

Rear:

w/ 32-inch tires: 24.5 / 623.5
w/ 33-inch tires: 25.3 / 643.5

RTI

21.7

Approach angle (degrees):

w/ 32-inch tires: 37.5
w/ 33-inch tires: 39.4

Departure angle (degrees):

w/ 32-inch tires: 35.5
w/ 33-inch tires: 36.5

Breakover angle (degrees):

w/ 32-inch tires: 23.5
w/ 33-inch tires: 25

Grade capability (percent):

60

Side slope capability (percent):

40

Water fording capability (in / mm):

24/610 (at 5 mph)

Curb weight (lb / kg):

4854 / 2206

Seating capacity:

5

Headroom (in / mm):

Front:

w/ sunroof: 39.9 / 1013
w/o sunroof: 40.6 / 1032

Rear:

w/ sunroof: 37.9 / 963.5
w/o sunroof: 39.9 / 1013

Legroom (in / mm):

Front:

41.9 / 1063

Rear:

35 / 890

Shoulder room (in / mm):

Front:

54.4 / 1381.3

Rear:

53.5 / 1358

Hip room (in / mm):

Front:

53.9 / 1370

Rear:

49.5 / 1258

Cargo capacity (rear seat up) (cu ft / L):

Rear seat up:

29.5 / 835.3

Rear seat down:

55.7 / 1577

Cargo area length (at floor) (in / mm):

Rear seat up:

32 / 810.5

Rear seat down:

63.5 / 1614

Cargo area height (rear floor to headliner) (in / mm):

37 / 939

Cargo area width between wheelhouses (in / mm):

42.1 / 1070

GVWR, standard (lb / kg):

6001 / 2728

Payload, base (lb / kg):

1150 / 521.6 (est.)

Fuel tank (gal / L):

23 / 87

Engine oil (qt / L):

6 / 5.7

Maximum trailer weight (lb / kg):

6000 / 2721 (est.)

Maximum tongue weight (lb / kg):

up to 450 / 204 (est.)