1998 Hummer H1
4 Door Open Top


Factory Specifications:

  • Engine: Turbo Diesel
  • Displacement: 396 cu. in. (6.5L)
  • Compression Ratio: 21.5:1
  • Horsepower: 195 hp (@ 3400 RPM)
  • Torque: 430 lb. ft. (@ 1800 RPM)
  • Top Speed: 83 mph (Officially. In reality, 99 mph... downhill)
  • Transmission: 4L80E Electronic 4 speed Automatic
  • Gear ratios: 1st - 2.48:1, 2nd - 1.48:1, 3rd - 1:60:1, 4th - 0.75:1, Reverse - 2.08:1
  • Torque Converter Ratio: 2.2:1
  • Transfer Case: New Venture Gear Model 242. Gear Ratios - Low 2.72:1, High 1:1
  • Full-time 4 wheel drive
  • Axles: Hypoid with a ratio of 2.73:1
  • Geared Hubs: Gear Ratio - 1.92:1
  • Differential: Zexel TorsenĀ® Torque Biasing Differential
  • Brakes: Hydraulic actuated, four-wheel inboard mounted power disc brakes
  • Suspension: Independent double A-frame with open-end coil springs
  • Fuel Capacity: 25 gal main tank, Plus 17 gal reserve
  • Length: 184.5 in.
  • Height: 76.8 in.
  • Width: 101.5 in.
  • Weight: 6710 lbs (without winch, undercarriage protection, or other optional equipment. See below for full modified weight)
  • Tires: 37" x 12.50 - 17 BF Goodrich Baja T/A KR "Project Tires"
    Equiped with runflat, beadlock and CTIS (Central Tire Inflation System)
  • 12,000 lb Warn Winch
There were 945 1998 models built

Current Modifications:

  • Custom race spec Roll cage (designed to allow use of factory convt. top)
  • 32 gallon race fuel cell
  • 5 point harnesses for all 4 seats
  • Window nets at all 4 doors
  • Extended snorkel
  • ICOM race radio
  • Lowrance Globalmap Baja GPS unit
  • Custon front 'Baja style' push bar/light mount
  • Custom rear 'Baja style' nerf bar
  • Drive shaft safety hoop
  • Upgraded, heavy duty 'Plow' coil springs
  • Custom overhead light bar
  • 2 Hella RallyE 4000 Off-Road Cornering Beam lights mounted in front
  • 4 Hella RallyE 4000 Off-Road Euro Beam lights mounted on top
  • Rear facing Hella amber fog light
  • Extra set of factory runflat beadlock CTIS wheels/tires
  • Modified Length: 229 in.
  • Modified Height: 91 in.
  • Modified Width: 101.5 in. (unchanged)
  • Modified Weight: 8350 lbs (empty - no fuel, tools, people, etc...)

Future Modifications:

  • Custom fabricated dual tire mount
  • Custom upper and lower shock mounts front and rear
  • King reservior shocks front and rear
  • Beard race seats
  • Permanent mounted interior work lights
  • Trailer
  • ...