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The PowerTech was a new engine family for Chrysler, and was not based on the Chrysler A engine as existing Chrysler V8s were. A 4.7 L V8 came first, fitted in the Jeep Grand Cherokee, and a 3.7 L V6 version debuted in 2002 for the Jeep Liberty. The PowerTech V6 and V8 were direct replacements for Chrysler's ''LA'' family in the early 2000s, and were also used in the Dodge Ram and started in the 2000 Dodge Durango . They were not used in any cars, but were reserved for truck and SUV use. They are also known as Next Generation Magnum in Dodge applications.The PowerTech V6 and V8 engines are produced at the Mack Avenue Engine Complex in Detroit, Michigan. E85 compatible versions of some PowerTech engines were developed and used in numerous Chrysler vehicles. On April 9, 2013 the last 4.7 L engine was built; ending 15 years of production with over 3 million examples built.〔 ==4.7== The 4.7-liter version was the first of this family, appearing in the 1999 Jeep Grand Cherokee. The displacement is 287 cubic inches (4698 cc) with a bore of and a stroke of . It has a cast iron block and aluminum heads with two valves per cylinder. It uses chain-driven overhead camshafts, one in each head. It originally produced and of torque. The 2008 4.7L has 2 valves and 2 spark plugs per cylinder and puts out and . Dodge has claimed that it has increased compression ratio and improved cylinder head port flow, the 4.7 L V8 is available with four speed and five speed automatic transmissions and a 5 speed manual transmission. The PowerTech was on the Ward's 10 Best Engines list for 1999. Applications: *1999–2009 Jeep Grand Cherokee *2000–2011 Dodge Dakota *2000–2009 Dodge Durango *2002–2013 Dodge Ram 1500 *2006–2009 Jeep Commander *2007–2009 Chrysler Aspen 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Chrysler PowerTech engine」の詳細全文を読む スポンサード リンク
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