Chrysler SOHC V6 engine

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Chrysler SOHC V6
Manufacturer Chrysler Corporation
DaimlerChrysler
Production 1993–present
Predecessor Chrysler 3.3 engine
Successor Chrysler Phoenix engine
Class SOHC 60° V6
Engine 3.5 L (3518 cc/214 in³)
3.2 L (3231 cc/197 in³)
4.0 L
Related Chrysler LH engine
Similar Ford Cyclone
GM HFV6
Honda J-series
Nissan VQ
Toyota GR

The single overhead cam V6 introduced in 1993 was a major advancement for Chrysler. It was derived from Chrysler's first homegrown front-wheel drive V6, the Chrysler 3.3 engine, and remains in production today. The SOHC V6 is likely to be replaced by the Chrysler Phoenix engine by 2013.

There are three major variants of this basic design. The smaller 3.3 L and 3.8 L are pushrod engines, while the 3.5 L, 3.2 L, and 4.0 L are overhead cam. Additionally, a 2.7 L DOHC version is also produced. Chrysler continues to produce the 3.5 L version of this engine along with the 2.7 L LH V6. This line is expanded further for 2006 with the addition of the 4.0 L engine debuting in the Dodge Nitro.

Displacement Bore Stroke Years Power Torque
3.5 L (3518 cc/214 in³) 96 mm (3.8 in) 81 mm (3.2 in) 1994–1998 214 hp (160 kW) 221 ft·lbf (300 N·m)
1999–present 234 hp (174 kW) 241 ft·lbf (327 N·m)
2004–present 255 hp (190 kW) 250 ft·lbf (339 N·m)
3.2 L (3231 cc/197 in³) 92 mm (3.6 in) 81 mm (3.2 in) 1998–2004 225 hp (168 kW) 225 ft·lbf (305 N·m)
4.0 L (3952 cc/241 in³) 96 mm (3.8 in) 91 mm (3.6 in) 2007–present 255 hp (190 kW) 275 ft·lbf (373 N·m)

Main article: Chrysler 3.3 engine

The original 3.3 engine, as well as the larger 3.8 L variant, are traditional pushrod engines. The 3.3 was introduced in 1990 and was joined in 1991 by the 3.8. Both remain in production today in Trenton, Michigan, and both use a cast iron block and aluminum heads.

A single overhead camshaft was a major addition to the lineup for 1993. Introduced with the 3.5 L engine, this basic design spawned the DOHC 2.7 L Chrysler LH engine as well as the 3.2 L and new 4.0 L variants. All but the 2.7 and high-output 3.5 are produced at Trenton Engine in Trenton, Michigan.

The SOHC engine uses an engine block that is very similar to its pushrod ancestors. But the front of the block was modified for the camshaft drive, and the heads are entirely different. One major change was that the SOHC engine was originally designed for the longitudinal placement of the Chrysler LH platform, rather than the transverse engine design of the K-cars and minivans. Since the bottom end was the same, the engine could be produced on the same assembly line in Trenton as the pushrod engine.

This 3.5 L (3518 cc) engine is a bored-out (to 96 mm) version of the 3.3, but with the important addition of overhead cams. The 3.5 L version has an odd intake arrangement with two separate manifolds and throttle bodies connected with a crossover valve. This provides better low- and midrange torque. Another notable feature is that the four valves per cylinder are driven by a single overhead camshaft as opposed to the conventional DOHC arrangement for multivalve engines.

The 3.5 L engine was redone in aluminum in 1999 as the EGJ. This engine was also modified for longitudinal placement in rear-wheel drive vehicles, first for the Prowler and later for the LX-cars. At its debut in 1993, this engine produced 214 hp (160 kW) and 221 ft.lbf (300 Nm). Output as of 2004 is 234 hp (174 kW) at 6000 rpm with 241 ft.lbf (327 Nm) of torque at 4400 RPM. The EGJ is built in Trenton, MI.

The high-output EGG is built in Kenosha, WI. Output is 255 hp (190 kW) at 6500 RPM with 250 ft.lbf (339 Nm) of torque at 4000 rpm.

Vehicles using the 3.5 include:

The 3.2 L version came along with the updated LH platform in 1998. It was an SOHC 4-valve design displacing 3.2 L (3231 cc/197 in³) with a smaller 92 mm (3.6 in) bore but the same 81 mm (3.2 in) stroke as the 3.5. It produced 225 hp (168 kW) and 225 ft·lbf (305 N·m) and met the TLEV standard. It was discontinued after 2004.

Applications:

The 3.5 L engine was expanded to 4.0 L (3952 cc/241 in³) for the 2007 Dodge Nitro and Chrysler Pacifica. Like its family members, this is a SOHC engine and is built in Trenton, Michigan. DaimlerChrysler reportedly spent $155 million to build out the Trenton plant to manufacture this engine.

The 4.0 produces 255 hp (190 kW) and 275 ft·lbf (373 N·m).

Applications:

Main article: Chrysler LH engine

The DOHC 2.7 L Chrysler LH engine is based on this same design, though the bore, stroke, and production site are different.

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