Chrysler PowerTech engine

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Chrysler PowerTech engine
ManufacturerChrysler Corporation
PredecessorChrysler LA engine

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. 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.

Chrysler used the "PowerTech" name on other engines used in Jeep vehicles, including the AMC Straight 6 engine (from 1996 onwards) and the 2.4 L four cylinder engine. The PowerTech V6 and V8 engines are produced at the Mack Avenue Engine Complex in Detroit, Michigan. An E85 compatible version of the PowerTech engine was developed and used in numerous Chrysler vehicles.


4.7 L PowerTech V8 engine in a Jeep Grand Cherokee

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 "almost Hemi" heads with two valves per cylinder. It uses a chain-driven overhead camshaft. It originally produced 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.


4.7 HO/Magnum

A "High-Output" version of the 4.7 L PowerTech engine, producing 265 hp (195 kW) and 330 ft·lbf (448 N·m) of torque, was introduced in 2002, first appearing in the Jeep Grand Cherokee Overland.


2008 Revisions

The 2008 Dodge Dakota and Ram pickup trucks, Dodge Durango and Chrysler Aspen SUV's, Jeep Grand Cherokee, and Jeep Commander will come with a Corsair version of the FFV 4.7 L engine, with dual spark plugs per cylinder, a new slant / squish combustion system design, and 9.8:1 compression, raising power to 290-310 hp and 320-334 ft·lbf of torque. See Allpar's page on the latest 4.7 L.

3.7 EKG

Chrysler PowerTech 3.7 L V6 in a 2005 Jeep Grand Cherokee

The EKG is a 3.7 L V6 version built in Detroit, Michigan. It displaces 226.0 cubic inches (3701 cc).[1]The bore is 3.66 inches (93 mm) and stroke is 3.57 inches (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.[1] 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.



The 2.4 L I4 PowerTech is actually a Neon engine variant. The 2.4 4-cylinder engine has 150bhp (110kw) and 165lb.-ft (224nm).This engine features in the 2005 Jeep Liberty.


  1. 1.0 1.1 "Jeep - Specs & Upgrades". Chrysler LLC. Retrieved on 2008-01-14. "Engine - Displacement - Cubic Inches...226.0. Engine - Displacement - Cubic Centimeters...3701; bore (in.)...3.66; stroke (in.)...3.57" 

See also