The H3T is built on a modified GM midsize
truck platform, including the coil-over front and rear suspensions.
Fox remote-reservoir shocks are used for the ultimate in off-road
dampening. An automatic transfer case locks the vehicle into
four-wheel drive when needed.
The locking front and rear axles on the H3T are borrowed
from full-size GM trucks. Braking is accomplished with four-wheel
discs from Alcon. The 15-inch-diameter rotors are clamped
down upon with Baer six-piston calipers in the front and four-piston
calipers in the rear. Nineteen-inch wheels are mounted at
all corners.
A 350-horsepower, turbocharged version of GM's new Vortec
3500 inline five-cylinder engine powers the H3T, and it's
backed by the heavy-duty Hydra-Matic 4L65-E electronically
controlled four-speed transmission. The turbocharged five-cylinder
produces more power than most six-cylinder engines, but is
more compact. The engine also makes 350 lb.-ft. of torque,
which helps the H3T tackle steep terrain with ease.
Fuel-saving variable valve timing technology, which is available
on some of GM's four-, five- and six-cylinder engines, boosts
the five-cylinder's efficiency by varying valve timing, lift
and duration. It also improves emissions and overall performance.
