How much horsepower does a 2008 5.7 Hemi have?

The 2008 Dodge Ram 5.7 Hemi engine produced 380 horsepower. This powerful V8 engine was a popular option for the Dodge Ram pickup truck, providing impressive performance and towing capability.

Detailed Specifications

The 5.7-liter Hemi V8 engine found in the 2008 Dodge Ram was part of Chrysler's legendary Hemi engine family. This engine featured an overhead valve (OHV) design with two valves per cylinder, as well as variable valve timing technology to optimize power and efficiency.

Key specifications of the 2008 Dodge Ram 5.7 Hemi engine include:

• Displacement: 5.7 liters (345 cubic inches)


• Horsepower: 380 hp @ 5,600 rpm


• Torque: 404 lb-ft @ 4,400 rpm


• Compression Ratio: 10.5:1


• Valvetrain: Overhead valve (OHV) with variable valve timing


• Fuel System: Multi-point fuel injection

The 380 horsepower rating made the 5.7 Hemi one of the most powerful engines available in the 2008 Dodge Ram lineup, providing ample power for towing, hauling, and high-performance driving.

Hemi Engine History

The Hemi name has a long and storied history with Chrysler, dating back to the original Hemi engines introduced in the 1950s. The 5.7-liter Hemi V8 used in the 2008 Dodge Ram was part of the modern Hemi engine family, which was reintroduced in 2003 after a long hiatus.

The 5.7 Hemi was known for its impressive power output, smooth operation, and distinctive hemispherical combustion chamber design that contributed to its performance capabilities. It quickly became a popular choice among Dodge Ram buyers seeking a powerful and capable truck engine.

What year is 5.7 Hemi best?

The best 5.7L Hemi year is subjective and depends on priorities, but the 2009 and later models are often favored for significant reliability improvements and performance enhancements, while some enthusiasts prefer 2014 for its combination of features and an unlocked PCM that allows for easier tuning. Models from 2009 onward feature variable valve timing, revised cylinder heads for better flow, and structural upgrades that addressed some common issues of the earlier generation. 
2009 and later models 

• Why they are a good choice:
  • Addressed common issues from the first-generation engine, like valve seat drop. 
  • Introduced variable valve timing (VVT) and a new engine block. 
  • Features revised cylinder heads with improved airflow for better performance. 
  • Achieved an award-winning status for its refined design in 2009, according to DodgeGarage. 
• Things to consider:
  • The "Hemi tick" can be an issue due to potential exhaust manifold leaks. 
  • The engine is more complex due to the addition of VVT. 

2014 models

• Why they are a good choice:
  • Combined features of the newer Hemi with the efficiency of the 8-speed transmission and an upgraded interior. 
  • The PCM was "unlocked," which makes it easier for owners to install tuners and modify the engine, according to Reddit users. 
• Things to consider:
  • The 2014 model year is sometimes mentioned as having reliability issues with other components, which may be why some sources advise against it. 

Pre-2009 models

• Why they are a good choice:
  • Simpler design with fewer electronics. 
  • Generally robust and reliable engines. 
• Things to consider:
  • Susceptible to problems like dropped valve seats and lifter/camshaft failure. 
  • Lack of VVT and less efficient airflow. 

How much horsepower does a 2008 5.7 Hemi make?

The legendary 5.7-liter HEMI V-8 produces 345 horsepower (257 kW) and 375 lb. -ft. (508 N•m) of torque and is equipped with the Chrysler Group's fuel-saving Multi-displacement System (MDS) that provides up to 20-percent fuel savings – a first for any pickup in the…

What is the gas mileage on a 2008 Dodge Ram 1500 5.7 Hemi?

The 2008 Dodge Ram 1500 with the 5.7L Hemi engine has an estimated combined city/highway gas mileage of 17 mpg, with 16 mpg city and 19 mpg highway for the 4x2 model. However, actual mileage can vary significantly, with some users reporting lower combined averages of around 10-12 mpg due to driving style, tire size, and other factors. 
Estimated vs. real-world mileage

• Estimated (official): Around 17 mpg combined (16 city/19 highway) for the 4x2 model. 
• Real-world: Many owners report significantly lower combined mileage, often in the 10-12 mpg range, especially in city driving or with modifications. 

Factors that can affect mileage

• Driving style: Aggressive acceleration and high speeds will decrease fuel economy. 
• Tires: Larger or non-standard tires can lower your MPG. 
• Drivetrain: 4x4 models will generally have slightly lower mileage than 4x2 models. 
• Weight: Carrying heavy loads will impact fuel efficiency. 
• Tire pressure: Proper tire inflation is important for fuel economy. 
• Maintenance: Keeping up with maintenance can help maintain the best possible mileage. 

How reliable is a 2008 5.7 Hemi?

Owns this car
I've never had a mechanical issue other than ball joints at 100k . The hemi is the most powerful 4x4 I've owned by far. highly recommend the 5.7 hemi.