The H3T Alpha’s 5.3L engine is a powerful
and efficient member of GM’s legendary small-block V-8 family.
It is rated at 300 horsepower and 320 lb.-ft. of torque. An aluminum
cylinder block is used with the H3 Alpha’s engine. It helps
reduce overall mass and maintains a more desirable front-to-rear
A Hydra-Matic 4L60 electronically controlled
four-speed automatic transmission is paired with the 5.3L engine.
Flat towing is enabled on all H3 and H3T models.