Chrysler PowerTech engine
| Chrysler Powertech engine | |
|---|---|
 |
|
| Overview | |
| Manufacturer |
DaimlerChrysler AG (1999–2007) Chrysler LLC (2007–2009) Chrysler Group LLC (2009-2013) |
| Also called | Next Generation Magnum |
| Production | 1999-April 9, 2013 |
| Combustion chamber | |
| Configuration | 90° V6/V8 |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminum |
| Valvetrain | Single overhead camshaft |
| Combustion | |
| Fuel system | Sequential Multiple-Port Fuel Injection |
| Fuel type |
Gasoline E85 |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Chronology | |
| Predecessor | Chrysler LA engine |
| Successor |
Chrysler Pentastar engine (V6) Chrysler Hemi Engine (V8) |
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.
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 3.66 in (93 mm) and a stroke of 3.405 in (86.5 mm). 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 235 hp (175 kW) and 295 lb·ft (400 N·m) of torque. 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:
A "High-Output" version of the 4.7 L PowerTech engine, producing 265 hp (198 kW) and 330 lb·ft (450 N·m) of torque, was introduced in 2002, first appearing in the Jeep Grand Cherokee Limited as an option and in the Jeep Grand Cherokee Overland as standard equipment.
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