General Motors has confessed that it is being silently developing a new Duramax V8 oil-burner to power its charismatic 2010 Hummer H2 SUV as well as the pair of Chevy Silverado and GMC Sierra pickup trucks.
Scheduled to go on the assembly line by the end of year 2009, the diesel will have a displacement of at least 4.5 liters (however, there is a chance that the engine will be even bigger since it is meant to replace the family of Detroit Diesel V8 engines that were introduced by GM more than 25 years ago and featured displacements of 6.2 and 6.5 liters).
Maybe, not so impressive for the local customer, but bear in mind that the engine will be 25 per cent more fuel efficient than its gasoline counterpart of comparable displacement.
The upcoming Duramax V8 to be installed on the diesel-powered Hummer H2 will produce a maximum of 310 hp and generous 520 lb-ft of torque.
For example, current gasoline-drinking Vortec 6000 6.0-liter V8 engine delivers only 15 hp more power but peaks at a meager 365 lb-ft of torque.
GM says that the engine will be quieter than previous generations of oil-burners “with noise and vibration performance approaching gasoline V8 levels.”
See also: GM kills Hummer H1