Paired with heavy-duty pickup trucks like the Ram, this engine is definitely a workhorse with its 11,610 to 12,750 pounds towing capacity. Powerfulĭepending on its application, the output of the 5.7 VVT Hemi ranges from 383 hp at 5,600 rpm and 400 lb-ft of torque at 4,000 rpm in its 2009 model year to 395 hp and 410 lb-ft of torque at 3,950 rpm from its 2013 model to the present. Meanwhile, a passive intake manifold is used by the likes of passenger cars and Jeep vehicles. For example, an active intake manifold with a shorter runner valve is utilized by the Dodge Ram, the non-HEV Dodge Durango, and the non-HEV Chrysler Aspens. The configuration of its intake manifolds depends on the model that uses the engine. All of these modifications resulted in increased airflow through the engine, which results in more power. Finally, the rocker arms have been beefed up to accommodate the increased valve spring pressure required by the new camshafts. Lifter follower technology has been revised as well to be more robust and handle the higher lift camshafts.
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The camshafts have been redesigned with different lobe profiles and duration to take advantage of the new cylinder head designs.
![5.7 hemi intake manifold 5.7 hemi intake manifold](https://www.modernmusclextreme.com/images/PRODUCT/large/108.jpg)
The exhaust manifolds have also been modified to increase flow and improve scavenging. Likewise, the compression ratio is upgraded to 10.5:1. It has a bore of 3.917 inches and a stroke of 3.578 inches. Compared to the earlier non-VVT version, this one features enhancements on the cylinder heads to maximize airflow. It features a cast-iron block and cast aluminum alloy head with a 16V OHV layout. The 5.7 VVT Hemi is a 90-degree pushrod V8 engine with variable valve timing. This engine is also used in many other applications such as boats and snowmobiles. Some of the widely known vehicles that use this engine include the Ram 1500, Ram 2500, Ram 3500, Dodge Charger, Chrysler 300C, and Jeep Grand Cherokee. The revised 5.7 Hemi with VVT is a popular engine that is used in many different vehicles. Like its precursor, the engine once again bagged the distinction of being among the top 10 best engines worldwide in its first year. As its VVT acronym indicates, the unit introduces a variable valve timing design to achieve its new performance figures.
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It also boasted four percent better fuel efficiency than the older version. This one offers higher horsepower and torque figures than its predecessor. In its 2009 model year, the Hemi engine debuted the 5.7L VVT. In 2003, it spawned its third-generation model, the 5.7L Hemi, which was recognized as one of the best 10 engines in the world by one of the longest-running automotive publications in the globe, Ward's AutoWorld. It was introduced in 1951 with a continuous evolution into the kind of engine that we know of today. The Hemi engine gets its name from its hemispherical cylinder head design.
![5.7 hemi intake manifold 5.7 hemi intake manifold](https://i.ebayimg.com/images/g/dvAAAOSwbNte4Vs8/s-l640.jpg)
Scroll down to discover the specific benefits offered by the engine to users: 1. With that, it was no stranger to various accolades from reputable award-giving bodies while ranking in generally favorable reviews from owners. Keep in mind that your experience may vary depending on the vehicle you have chosen and other factors.įrom its unveiling up to the present, the 5.7 VVT Hemi has been characterized by its optimal engine design, varied applications, power, and fuel economy. When it comes to engine options, the Hemi has always been a popular choice but there are both good and bad sides to the 5.7 VVT version of the power unit, and this post will take a look at both of them. However, with great power comes great responsibility, and the Hemi is no exception. If you're looking for a powerful engine that delivers good fuel economy and has plenty of torque, the 5.7 VVT Hemi should be at the top of your list.