|93 Hummers||94 & Newer Hummers|
|Engine||6.2 L Diesel 155 hp @ 3500 RPM||6.5 L Diesel 170 hp @ 3400 RPM (97)|
|Engine Displacement||379.4 cu. in||396 cu. in.|
|Torque||285 lb-ft. @ 2000 rpm||290 lb-ft. @ 1700 rpm|
|Max. Speed (Mfg. ratings)||65 mph||83 mph (turbo & non turbo)|
|Max. Speed (experienced)||71 mph||85 mph, 95 mph (turbo engine)|
|Acceleration 0-60||19.6 sec. Mfg. Rating - I feel it's a little better then this.||19.6 Mfg. Ratings - but really it is better then that.|
|Transmission||Turbo Hydra Matic 400 3 speed
Max. torque input 451 lb-ft.
Gear ratios 2.48:1, 1.48:1, 1.0:1 - Rev 2.08:1
|4L80-E 4 speed
Max. torque input 440 lb-ft.
Gear ratios: 2.48:1, 1.48:1, 1.0:1, 075:1 - Rev 2.08:1
|A/C Unit||mechanical controls||Computerized - works better|
|Ground clearance||Front-end is lower||Front-end now sits higher|
|Seating - leg room||Cross bar behind||Removed cross bar - more leg room|
|Battery compartment||Under front right seat||Under hood next to right tire|
Engine: The 6.2 l diesel engine just like the Chevy Suburban's by in 85-86. No computer controls the engine, so I guess if we should have a nuclear blast, my truck should still keep on running since it is mechanical and this is like most of the military version Hummer's or Humvee's. The engine was changed out to the 6.5l either due to Detroit Diesel who discontinued the making of the 6.2 version engine. But the 6.5 l is a standard off the line engine now used in the diesel GMC & Chevy trucks and Suburban. The 6.2 has been a great engine as far as I know. I would have liked a Cummins Diesel in it, but I do not know if it would fit neither do I have the money to try it.
Transmission: 3 Speed HD Turbomatic 400 will get up to 71-72 mph before
the engine governor holds it back. The newer 4 speed automatic transmissions
will do 85 mph plus, and I have heard of the turbo's doing 95 mph.
The military spec. for the Humvees are for it to do 55 mph, so I guess
when they designed it, no one figured on going over 70 mph so the gear
ratio meet the requirements for the military. The civilians demanded
more speed, so starting in 94, 4 speed computerized transmission was used.
This and the engine are a standard setup for GM trucks used today.
My Hummer itself weighted in at 7380 lbs. with the only extra equipment being the 5 ammo boxes that have 10 feet of chain, jumper cables, and tow straps. Half tank of fuel, and me out of the truck. Compared to my 96 2 wheel drive 3/4 ton Suburban empty weight of 6020 lbs.
The 98's base weight in as followed:
|Curb Weight||2 door hard top||4 Door Hard Top||4 Door Open Top||4 Door Wagon|
|Diesel||6390 lbs.||6790 lbs.||6640 lbs.||6980 lbs.|
|Turbo Diesel||6460 lbs.||6860 lbs.||6710 lbs.||7050 lbs.|
|Gross Vehicle Weight||10,300 lbs.||10,300 lbs.||10,300 lbs.||10,300 lbs.|
|Length||184.5 inches||About the same as a Ford Explorer|
|Maximum Height||75 inches||Suburban - 75 inches|
|Width (with out mirrors||86.5 inches||Suburban - 76.7 inches|
|Ground Clearance||16 inches|
|Turning Radius||26.5 feet|
|Cruising Range||200-275 miles on hard surface|
|Fuel Tank (Stock)||25 gallons but I can only get about 20|
|Fuel Economy||13.5 mpg, but I get about 11-12 gph|
Service - Service requirements are just like any other 4x4 truck, with a few extra items.
More to come -