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2006 Hummer H3 |
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| Engine & Drivetrain |
| Specifically designed as
a truck engine, the Vortec 3500 is a 3.5L inline five-cylinder offering
an excellent combination of power and efficiency. The engine delivers
220 horsepower at 5600 rpm and 225 lb.-ft. of torque at 2800 rpm.
In terms of performance, the Vortec 3500 provides the H3 with excellent
power and control for off-roading, with comfortable and capable on-road
characteristics, including acceleration that equals the V-8 powered
H2 in most driving conditions. The Vortec 3500 brings premium features
and advanced technologies –- including dual overhead cams, variable
valve timing, electronic throttle control and low mass. The engine
also features unique counter-rotating balance shafts to help minimize
noise, vibration and harshness. |
| The Vortec 3500 is available
in the H3 with either a standard, smooth-shifting five-speed manual
transmission or a Hydra-Matic 4L60-E electronically controlled four-speed
automatic transmission. The automatic transmission includes shift
modes specific to low-range operation, which, combined with speed-based
throttle progressions, help optimize driveability in low-range, off-highway
operation. |
| The H3 also has a standard
new Borg-Warner two-speed electrically controlled full-time four-wheel-drive
system with a 2.64:1 ratio low-range gear reduction for highly controlled
off-road obstacle climbing. An optional version provides aggressive
low range gearing –- a 4.03:1 ratio –- for ultimate obstacle-climbing
control. |
| Both versions provide the
choice of operating modes: |
- 4High-range Open, for optimum highway
performance and comfort under normal road conditions
- 4High-range Locked, which allows
torque to be transferred to the front or rear wheels as needed
- 4Low-range Locked, for severe off-pavement
use, such as crawling over large rocks or logs, or deep sand or
snow.
- 4Low-range Locked plus driver-selectable
electronic rear differential locked, with the optional 4.03:1
low-range transfer case gearing, providing crawling and climbing
power every bit as capable as the legendary H1 and H2.
- Neutral, for flat-towing the H3.
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| H3's more maneuverable size
provides advantages, such as a 37-ft. turning circle and 9.1-inch
ground clearance, which contribute to maximum breakover angle of 25
degrees (with 33-inch tires). Serious off-road performance is also
aided by the maximum approach angle of 40 degrees and maximum departure
angle of 37 degrees. These approach and departure angles permit the
H3 to drive right into a hole and back out again, without getting
hung up in front or rear. |
| Among its off-road capabilities,
the H3 can ford 16 inches of water at 20 mph or 24-inch streams at
a 5-mph pace, climb 16-inch vertical steps and rocks, make its way
through deep sand and race over sandy surfaces. |
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