The added power and efficiency come primarily from enhancements to engine breathing through smoother intake runners, a variable air intake system, variable valve timing, and a wider operating range for the MDS function.
"While the all-new HEMI engine maintains the key characteristics that makes HEMI a household name in powertrains, we added new technologies - including Variable Valve Timing - that substantially improve fuel economy and refinement and maximize performance," said Bob Lee, VP of Powertrain Product Engineering at Chrysler LLC.
Drivers can also expect top-notch performance, with 0-60 figures under six seconds for regular-cab HEMI models. Also available will be a revised 4.7 litre Flex-Fuel V8, and a 3.7 litre V6. A new light-duty diesel engine will make its way under the hood after 2009, with a notable improvement in mileage and emissions compared to a similarly powerful gasoline engine. A hybrid Ram is scheduled for 2010 as well.
The 2009 Ram goes on sale later this year.