More Fuel-Efficient, More Powerful Chrysler Group 4.7-Liter V-8 Engine Debuts in New 2008 Dodge Dakota
Chrysler has unveiled a powerful, more fuel efficient V-8 engine today at the Chicago Auto Show. The 290 Horsepower, 4.7-liter V-8 follows the HEMI(R) lead in using two spark plugs per cylinder, and leverages increased compression ratio, improved cylinder head port flow and a new slant/squish combustion system design to substantially increase fuel economy, power and torque.
"The Chrysler Group continues to push the boundaries of engine technology, substantially increasing fuel-efficiency, performance and refinement," said Bob Lee, Vice President - Powertrain Product Engineering Team, Chrysler Group. "Chrysler Group knows that while pickup customers always want more torque and power, fuel economy is becoming more important as fuel prices trend upward. Like our industry-leading HEMI(R), this new engine represents a win-win for our customers."
Not only the fuel efficiency improved but also the automaker says that the new engine will provide vehicles a smoother ride.
New 4.7-liter MAGNUM(R), SOHC, 16-Valve SMPI V-8
Type and Description: V-type, liquid-cooled
Displacement: 287 cu. in. (4701 cu. cm)
Bore x Stroke: 3.66 x 3.40 (93.0 x 86.5)
Valve System: Chain driven, SOHC, 16 valves, hydraulic end-pivot roller
rockers
Fuel Injection: Sequential, multi-port, electronic, returnless
Construction: Compacted Graphite Iron bedplate, cast-iron block, aluminum
alloy heads
Compression Ratio: 9.8:1
Max Engine Speed: 6,000 rpm
Fuel Requirement: E85 (Ethanol) or Unleaded regular, 87 octane (R+M)/2
Oil Capacity: 6 qt. (5.7L)
Emission Controls: Dual three-way catalytic converters, heated oxygen
sensors, and internal engine features
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