Dodge HEMI 6.4L V8 (392)

Dodge HEMI 6.4L V8 (392) — every model and year that used this engine (4 models, 2011–present), based on NHTSA VIN build data, with links to prices and reliability.

SRT 392 family.

6.4L · 8 cylinders · seen in 4 models, 2011–2027

By the numbers

Output range 475–485 hp (median 485 hp). Gasoline: 100%. Based on 162 decoded NHTSA VIN build sheets.

About this engine family

The Chrysler Hemi engine, known by the trademark Hemi or HEMI, is a series of high-performance American overhead valve V8 engines built by Chrysler with hemispherical combustion chambers. Three generations have been produced: the FirePower series (with displacements from 241 to 392 cu in from 1951 until 1958; a 426 cu in race and street engine from 1964 through 1971; and family of advanced Hemis (displacing between 5.7 and 6.4 L since 2003.

In detail

Chrysler made various revisions to the 5.7 L for the 2009 model year. The first for all applications was what Chrysler called Variable Camshaft Timing or VCT. VCT (which is essentially variable valve timing) uses an oil control valve that controls oil flow to a unique camshaft sprocket that contains a phasing device, which depending on the operation of the oil control valve, either advances or retards camshaft timing.

Cylinder heads were revised to increase flow. Though the intake manifold was also changed on all applications, it was still model-specific. The Dodge Ram, non-Hybrid Electric Vehicle (HEV) Chrysler Aspens, and non-HEV Dodge Durango utilized an active intake manifold with a short runner valve to optimize torque and horsepower. At lower engine speeds, the valve was closed, resulting in improved low-end torque from the longer runners.

At higher engine speeds, the valve was opened, diverting the incoming air into the center of the manifold. The shorter runners resulted in improved horsepower. Passenger cars, Jeep vehicles, as well as HEV Chrysler Aspen and HEV Dodge Durango did not use this manifold; instead, these vehicles utilized a passive intake manifold, which did not have a short runner valve. Also, the new cylinder head came with different spark plug seats: tapered seats were replaced with gasket seats.

This change made it impossible to use the old OE Champion RE14MCC4, so the new spark plugs that came with 5.7 HEMI became NGK LZFR5C-11. Besides different seats, the spark plug gap grew.039" (1.0 mm).043" (1.1 mm). Engines mated to the six-speed manual transmission or used in the Ram Heavy Duty did not feature the Multi-Displacement System (MDS). The new version of the 5.7 L had five different camshaft profiles, all with VCT: * Active intake without MDS * Active intake with MDS * Passive intake without MDS * Passive intake with MDS * HEV application (modified version of passive intake with MDS) Power numbers: * 300C/300S V8: , * Charger R/T: , * Challenger R/T automatic: , * Challenger R/T 6-speed manual: , * 2009–2012 Ram 1500 truck: , * 2013+ Ram 1500 truck: , * Ram 2500/3500 truck: , * Jeep Grand Cherokee and Jeep Commander: , * 2011+ Dodge Durango: , * 2009 Chrysler Aspen and Dodge Durango non-HEV: , * 2009 Chrysler Aspen and Dodge Durango HEV: , * 2022 Jeep Wagoneer: ,

Source: Wikipedia — Chrysler Hemi engine, CC BY-SA.

Models that used this engine

Model Years with this engine Fuel VIN builds seen
CHARGER 2012–2023 Gasoline 68
CHALLENGER 2011–2023 Gasoline 66
DURANGO 2017–2027 Gasoline 25

Engine usage derived from NHTSA VIN build data (displacement + cylinder configuration). Model links lead to prices, generations and reliability.

For sale with this engine