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How many cubic inches is a 5.2 Magnum Dodge?

The 5.2 Magnum Dodge engine has a displacement of 318 cubic inches (about 5.2 liters).


The 5.2 Magnum refers to Mopar’s 5.2-liter V8, commonly cited as 318 cubic inches. This designation appears across Dodge passenger cars and trucks that used the Magnum-branded V8 in the 1990s and early 2000s, reflecting a standardized figure used by manufacturers and enthusiasts alike.


Displacement and context


Below are the core facts that define the 5.2 Magnum’s displacement, its engine family, and where it appeared in Dodge vehicles. The list consolidates widely cited specifications to provide a quick reference for enthusiasts and researchers.



  • Displacement: 318 cubic inches (5.2 liters).

  • Engine family: Magnum V8, part of Mopar's Magnum family that replaced the earlier LA series in many models during the 1990s.

  • Common applications: Dodge Dakota, Dodge Ram pickups, and various other Dodge models in the 1990s and early 2000s.


In practice, 318 cu in is the standard figure you’ll see in catalogs, service manuals, and enthusiast guides for the 5.2 Magnum. The slight discrepancy that can appear between exact liter-to-cubic-inch conversions and the rounded manufacturer rating is due to rounding and measurement conventions used in different years or publications.


Rounding and measurement details


Conversion nuances


Strictly speaking, 5.2 liters converts to about 317.3 cubic inches using a precise liter-to-cubic-inch conversion. However, manufacturers and most references round to the nearest whole cubic inch, yielding 318 cu in for the 5.2 Magnum. This rounding practice is common across many engine displacements to provide a tidy, easily compared spec.


Summary


The Dodge 5.2 Magnum is widely documented as having a displacement of 318 cubic inches (5.2 liters). This figure is used consistently in official specs and by automotive enthusiasts, with the small rounding difference explained by standard conversion practices.

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Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.