The Chrysler 392 HEMI is a 6,407 cc, naturally aspirated V8 petrol engine produced between 2011 and 2023. It features a pushrod valvetrain with two valves per cylinder and variable valve timing (VVT), delivering substantial power outputs for performance applications. In standard form it produced 347–350 kW (470–485 PS) and 637–644 Nm of torque, prioritising high — revving performance and throttle response.
Fitted primarily to the Dodge Challenger, Charger, and Jeep G…
Production years 2011–2023 meet US Tier 2 Bin 5 standards for North America; European models meet Euro 5 standards (EU Regulation (EC) No 715/2007).
The Chrysler 392 HEMI is a 6,407 cc V8 petrol engine engineered for performance sedans and SUVs (2011-2023). It combines a robust pushrod valvetrain with variable valve timing to deliver high horsepower and strong low-end torque. Designed to meet US Tier 2 Bin 5 and Euro 5 emissions standards, it balances brute force with modern emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,407 cc | |
Fuel type | Petrol | |
Configuration | V8, OHV, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 103.9 mm × 94.6 mm | |
Power output | 347–350 kW (470–485 PS) | |
Torque | 637–644 Nm @ 4,200 rpm | |
Fuel system | Sequential multi-port fuel injection | |
Emissions standard | US Tier 2 Bin 5 / Euro 5 | |
Compression ratio | 10.9:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven (maintenance-free) | |
Oil type | SAE 5W‑20 (synthetic) | |
Dry weight | 235 kg |
The Chrysler 392 HEMI was used across Dodge and Jeep performance platforms with longitudinal mounting. This engine received minor platform-specific adaptations for intake and exhaust routing. All adaptations are documented in OEM technical bulletins.
The 392 HEMI's primary reliability risk is failure of the oil cooler lines, with elevated incidence in high-mileage or performance-driven examples. Chrysler service data indicates a significant number of failures occurring beyond 80,000 km, while owner reports frequently cite lifter tick as a secondary concern. Neglecting the oil cooler line inspection and using incorrect oil can lead to expensive engine damage.
Analysis derived from Chrysler technical bulletins (2011-2023) and owner workshop manual data. Repair procedures should follow manufacturer guidelines.
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The 392 HEMI is generally robust and can be very reliable long-term with proper maintenance. Its main weaknesses are the oil cooler lines and potential lifter issues. Addressing these proactively and adhering strictly to the 5W-20 synthetic oil change schedule are critical for ensuring longevity and avoiding major repairs.
The most critical and common issue is oil cooler line failure. Other frequent problems include lifter tick or failure, exhaust manifold bolt breakage, and plastic thermostat housing leaks. These are well-documented in Chrysler service bulletins and forums.
While branded as Chrysler, this engine was used in Dodge Challenger and Charger SRT 392/Scat Pack models (2015-2023) and the Jeep Grand Cherokee SRT (2012-2021). It was the naturally aspirated flagship V8 before the supercharged Hellcat variants.
Yes, the 392 HEMI responds very well to tuning. Simple modifications like a cold air intake, cat-back exhaust, and an ECU tune can yield 20-40 additional horsepower. More extensive builds with camshafts and cylinder head work can produce significantly more power, as the engine has strong internals.
Fuel economy is poor by modern standards. Expect around 17–20 L/100km (14–12 mpg US) in combined city/highway driving. Highway cruising can yield 13–14 L/100km (18–17 mpg US), while aggressive city driving will be much higher, around 22+ L/100km (10 mpg US).
No. The Chrysler 392 HEMI is a non-interference engine. If the timing chain were to fail (which is extremely rare), the pistons will not contact the valves, preventing catastrophic internal engine damage. This is a design characteristic of many pushrod V8 engines.
Chrysler mandates the use of SAE 5W-20 full synthetic oil meeting the MS-6395 specification. Using the correct oil is crucial for protecting the variable valve timing system and preventing lifter wear. Extended oil change intervals or incorrect oil can lead to premature engine wear.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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