Chrysler PowerTech engine

The PowerTech is a new engine family for DaimlerChrysler and is not based on the Chrysler A engine like almost every other Chrysler V8. A 4.7 L V8 came first for 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.

Note that Chrysler uses the "PowerTech" name on a number of different engines:

* The older AMC Straight 6 engine (from 1996 onwards)
* The 2.4 L Neon engine for trucks

The PowerTech engines are produced at the Mack Avenue Engine Complex in Detroit, Michigan.



4.7

The 4.7 liter version was the first of this family, appearing in the 1999 Jeep Grand Cherokee. The displacement is 4.7 L (4701 cc/286 in³) with a bore of 3.66 in (93 mm) and a stroke of 3.40 in (86.4 mm). It has a cast iron block and aluminum "almost Hemi" heads with two valves per cylinder. It uses a chain-driven overhead camshaft. It produces 235 hp (175 kW) and 295 ft·lbf (400 N·m) of torque.

The PowerTech was on the Ward's 10 Best Engines list for 1999.

Applications:

* 1999-present Jeep Grand Cherokee
* 2000-present Dodge Dakota
* 2000-present Dodge Durango
* 2002-present Dodge Ram
* 2006-present Jeep Commander
* 2007-present Chrysler Aspen


4.7 HO

A "High-Output" version of the 4.7 L PowerTech engine, producing 260 hp (195 kW) and 330 ft·lbf (448 N·m) of torque, was introduced in 2002, first appearing in the Jeep Grand Cherokee Special Edition.

Applications:

* 2002-2004 Jeep Grand Cherokee available on Limited, Overland and Special Edition models
* 2005-present Dodge Dakota
* 2008 Dodge Challenger [base models]


3.7 EKG

The EKG is a 3.7 L (3701 cc) version built in Detroit, Michigan. Bore is 93 mm and stroke is 90.8 mm. It is a 90° V engine like the V8, with SOHC 2-valve heads. Output is 210 hp (160 kW) at 5200 rpm with 235 ft.lbf (319 Nm) of torque at 4000 rpm. It has a cast iron engine block and aluminum SOHC cylinder heads. It uses SFI fuel injection, has roller followers, and features fracture-split forged powder metal connecting rods and an assembled reinforced plastic intake manifold.

Applications:

* 2002-present Dodge Ram
* 2004-present Dodge Dakota
* 2004-present Dodge Durango
* 2007-present Dodge Nitro

* 2002-present Jeep Liberty
* 2005-present Jeep Grand Cherokee
* 2006-present Jeep Commander


Power curve for the 3.7L PowerTech V6 as implemented in the Dodge Nitro:

http://www.dodge.com/en/nitro/capability.html?feature=3_7_liter_v6


2.4

The 2.4 L I4 PowerTech is actually a Neon engine variant.