The Chrysler ENR is a 3,500 cc, 60° V6 petrol engine produced between 2007 and 2010. It features sequential multi — port fuel injection, an aluminum block and heads, and a dual overhead camshaft (DOHC) valvetrain. This engine was designed as a performance — oriented upgrade, delivering 250 hp (186 kW) and 250 lb‑ft (339 Nm) of torque for responsive acceleration.
Fitted primarily to the LX — platform sedans and coupes, including the Chrysler 300C and Dodge Charger, the ENR was…
Chrysler
Production years 2007–2010 meet US Federal Tier 2 Bin 5 emissions standards (EPA Certificate of Conformity #A-07-15).
The Chrysler ENR is a 3,500 cc 60° V6 petrol engine engineered for performance sedans and coupes (2007-2010). It combines sequential multi-port fuel injection with dual overhead camshafts and variable valve timing to deliver strong, linear power. Designed to meet US Federal Tier 2 Bin 5 emissions standards, it balances spirited performance with regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,500 cc | |
Fuel type | Petrol (Gasoline) | |
Configuration | 60° V6, DOHC, 24-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 96.0 mm × 81.0 mm | |
Power output | 250 hp (186 kW) @ 6,400 rpm | |
Torque | 250 lb-ft (339 Nm) @ 3,800 rpm | |
Fuel system | Sequential multi-port fuel injection (SMPI) | |
Emissions standard | US Federal Tier 2 Bin 5 | |
Compression ratio | 10.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | None | |
Timing system | Chain-driven DOHC with Variable Valve Timing (VVT) | |
Oil type | API SM 5W-20 | |
Dry weight | 375 lbs (170 kg) |
The Chrysler ENR was used across Chrysler Corporation's LX platform with longitudinal mounting and was not licensed to other manufacturers. This engine received platform-specific adaptations-primarily related to accessory drive layouts and engine management calibration for different model trims. All adaptations are documented in OEM technical bulletins.
The ENR's primary long-term reliability consideration is maintaining oil quality and level to protect the variable valve timing (VVT) system and timing chains. Internal Chrysler service data indicates that the majority of VVT-related faults are linked to infrequent oil changes or using incorrect oil viscosity. The timing chains are generally robust but rely on clean, properly flowing oil for lubrication. Regular oil changes with the correct specification are critical for longevity.
Analysis derived from Chrysler technical bulletins (2007-2010) and internal service reports. Repair procedures should follow manufacturer guidelines.
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Yes, the ENR is generally reliable with proper maintenance. Its aluminum construction is robust, and the timing chains are durable. The key to long-term reliability is strict adherence to oil change intervals using the correct 5W-20 viscosity oil to protect the VVT system. With proper care, these engines can reliably reach 150,000-200,000 miles.
The most frequent issues are VVT solenoid failures (especially on early 2007 models), timing chain tensioner wear, IMRC actuator failure, and coolant leaks from the water pump or crossover tube. These are well-documented in Chrysler service bulletins and repair manuals.
The 3.5L ENR engine was used in the Chrysler 300, Dodge Charger, and Dodge Magnum (2007-2008) from the 2007 to 2010 model years. It was typically the standard or optional V6 for mid-trim levels of these LX-platform vehicles.
Yes, the ENR responds well to basic modifications. A cold air intake, performance exhaust, and custom ECU tune can yield gains of 20-30 horsepower. More significant power increases require forced induction (supercharger or turbocharger), which is complex and expensive. The stock internals are strong enough for moderate power increases.
Fuel economy is average for a performance-oriented V6 of its era. Expect around 16-18 mpg (US) in city driving and 24-26 mpg (US) on the highway in a Chrysler 300 or Dodge Charger. Real-world figures will vary based on driving style and vehicle condition.
Yes. The Chrysler ENR is an interference engine. This means that if the timing chain were to fail or jump timing, the pistons would contact the valves, causing severe internal engine damage. This underscores the importance of maintaining proper oil level and quality to ensure the timing chain tensioners function correctly.
Chrysler specified API SM 5W-20 motor oil. Modern equivalents meeting API SN or SP standards in 5W-20 viscosity are perfectly suitable and provide better protection. Using the correct viscosity is critical for the proper operation of the VVT system. Regular oil changes every 5,000-7,500 miles are recommended.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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