5.7 Dodge HEMI Performance

by Mark Ivanko

Dodge's 5.7 Liter HEMI engine has been in production since 2003; the engine utilizes Dodge's hemispherical combustion chamber design. First introduced in the Dodge Ram series of trucks, for both the 2500 and 3500 models, it has since been used in nine different Dodge, Jeep and Chrysler models. Both power and fuel efficiency have made the 5.7 liter HEMI a popular engine choice for many consumers.


The abbreviation "HEMI" comes from the word "hemispherical," which describes the type of combustion chamber used in the HEMI engine lineup. First designated as "HEMI" in 1964 by Chrysler, who has also patented the name, as of 2003, the HEMI engine received a bigger bore (5.7 liters) and has since been used in models such as the Dodge Ram, Durango, Charger, as well as in other models.


The Dodge 5.7 Liter HEMI produces 340 hp and 390 lb-ft of torque in the Dodge Magnum, Charger and Challenger model trucks. It is a 90-degree V8, 2-valve, pushrod design, displacing 5,654 cc (345 cu in), with a bore of 99.5 mm (3.92 in) and a stroke of 90.9 mm (3.58 in).

Fuel Efficiency

Even with 340 hp of power, the Dodge's 5.7 Liter HEMI engine still manages to deliver around 15 mpg in the city and 25 mpg on the highway, respectively, depending on which model truck it is fitted on--Dodge Charger, Dodge Magnum or Chrysler 300C. However, all models achieve a combined average of 18 mpg.


The 2007 Dodge Charger R/T, utilizing the 5.7 Liter HEMI engine, can achieve a 0 to 60 time of 5.5 seconds and a quarter mile time of 14.0 seconds. The 2005 Dodge Magnum R/T AWD (All-Wheel Drive) can get from 0 to 60 in 5.8 seconds, and does the quarter mile in just 14.3 seconds. The 2005 Chrysler 300C, utilizing the same 5.7 liter HEMI engine, has a 0 to 60 time of 5.5 seconds and a quarter mile time of 13.9 seconds.


Dodge's 5.7 Liter HEMI engine is not only known for it's power and "deep notes," but also for it's reliability. It was rated Ward's Top 10 Best Engines from 2003 through 2007 and it won the distinction again in 2009 for the Dodge Ram and Challenger R/T models. Some consider Ward's award as the Oscars of the Engine world. And with six out of the top 10 awards (from Wards alone), the Dodge 5.7 liter HEMI engine is a performance giant and an engine that will keep Americans driving American muscle with pride.

About the Author

Mark Ivanko is an experienced automotive and technical writer. He has been working in the automotive industry since 2005. He specializes in European automakers, but keeps his ear to the ground on anything and everything automotive. Ivanko attended New York University, where he got a bachelor's degree in mathematics.

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Photo Credits

  • photo_camera dodge challenger prototype image by Jorge Moro from Fotolia.com