How much does a 2003 5.7 Hemi engine weight?

The engine typically weighs about 550 pounds (roughly 250 kg) in a standard, installed configuration; exact numbers vary depending on how the weight is measured and which packaging the engine uses.

For context, the 2003 5.7 L Hemi was the first-generation Hemi used in a range of Chrysler, Dodge, and jeep models. It combined an iron block with aluminum cylinder heads and carried a mix of components and accessories that affect its overall mass. Market- and model-year variations, plus the distinction between dry weight (engine alone) and wet weight (engine with fluids and standard accessories), lead to a range of published figures. We break those down below to help clarify what “weight” means in this case.

Weight definitions and typical ranges

Below are common estimates you’ll encounter for the 2003 5.7 Hemi, broken out by how the weight is defined.

• Dry weight (engine alone, no fluids, no accessories): approximately 520–550 pounds (235–250 kg).


• Wet weight (engine with typical fluids and standard accessories, before installation into a vehicle): approximately 570–620 pounds (259–281 kg).

These figures are approximate and can vary by source, depending on the exact engine spec, accessory package, and whether additional items (such as exhaust manifolds or specific cooling components) are included in the measurement.

Notes on the 2003 5.7 Hemi specifics

The 2003 5.7 Hemi used an iron engine block with aluminum cylinder heads and was designed for use across multiple chassis (notably the Dodge Ram, Grand Cherokee, and Chrysler 300C lines of that era). Weight can differ slightly between applications due to differences in accessory configurations, exhaust manifolds, and cooling hardware installed in factory packaging for each model.

Why the numbers vary

Variations arise from how “weight” is defined (dry vs. wet), the exact accessory kit, engine mounting hardware, and whether fluids such as oil and coolant are included. Published figures from manufacturers, aftermarket catalogs, and enthusiasts’ manuals can reflect those differences, so the ranges above cover the most commonly cited values for the 2003 5.7 Hemi.

Summary

In short, a 2003 5.7 Hemi typically weighs around 550 pounds in common installed configurations, with dry-weight estimates around 520–550 pounds and wet-weight estimates around 570–620 pounds. If you’re weighing an engine for a swap or a project, confirm whether the figure refers to dry weight or wet weight and what accessories are included to ensure an apples-to-apples comparison.

How much does a 2003 Dodge Ram 1500 weigh?

A 2003 Dodge Ram 1500 can weigh anywhere from approximately 4,516 pounds to over 5,378 pounds, depending on its configuration, such as the cab style (Regular, Quad) and drivetrain (2WD, 4WD). For example, a Regular Cab ST weighs around 4,516 lbs, while a Quad Cab with an 8-foot bed can weigh up to 5,102 lbs. 
Here is a breakdown of approximate weights based on common configurations:

• Regular Cab:
  • Regular Cab ST (6.25 ft bed): Approximately 4,516 lbs 
  • Regular Cab (8 ft bed): Approximately 4,722 lbs 
• Quad Cab:
  • Quad Cab (6.25 ft bed): Approximately 4,804 lbs 
  • Quad Cab (8 ft bed): Approximately 5,102 lbs 
• Other Configurations:
  • Regular Cab ST (120.5 in. wheelbase): Approximately 4,836 lbs 
  • Quad Cab (160.5 in. wheelbase): Approximately 5,378 lbs 

What is the bad year for the 5.7 Hemi?

The "bad" years for the 5.7 Hemi include 2003-2008 due to a known issue with valve seats dropping, which can cause significant engine damage. Additionally, 2011-2012 model years, particularly in Ram trucks, were notorious for the "Hemi tick," often linked to lifter or camshaft problems.
 
This video explains the common issues with the 5.7L Hemi engine: 58s8020 AutomotiveYouTube · Oct 13, 2022
2003–2008 (Pre-Eagle) 

• Valve seat drop: This is the most significant issue for this period, where valve seats could fall out of the aluminum cylinder heads, leading to engine damage. This is due to the different expansion rates of the steel valve seats and aluminum heads. 

You can watch this video to learn more about how to prevent the valve seat drop issue: 56sMarspeedYouTube · Nov 20, 2020
2009 and later (Eagle) 

• Hemi tick: The 2009 "Eagle" Hemi introduced revisions that brought a new problem: an intermittent ticking noise that can indicate worn lifters and camshafts. 
• Lifter and camshaft failure: The ticking noise is often a precursor to lifter failure, which can seize and cause the camshaft to wear down. This is a costly repair, often running thousands of dollars. 
• Multi-Displacement System (MDS): The MDS system, introduced in 2005, can contribute to engine tick. It deactivates four cylinders during cruising, creating temperature differences that may cause oil flow problems. 
• Specific problematic years: While the issue became more widespread in later years, the 2011 and 2012 models are particularly noted for the "Hemi tick". 

This video shows how to diagnose and address the Hemi tick issue: 57sJack FletcherYouTube · Dec 10, 2022
Other considerations

• Exhaust manifold leaks: This can occur in many model years and may be mistaken for the engine tick. It often sounds like a tick, especially on a cold start, and is caused by broken manifold bolts. 
• Transmission issues: Many 5.7L Hemi vehicles have also had issues with their transmissions, which can lead to costly repairs. 

How much horsepower does a 2003 5.7 Hemi have?

345 horsepower
Its 5.7 liters of raw energy shows up as the standard engine for the 2500 and features a hemispherical combustion chamber (hence the name Hemi). It makes 345 horsepower and 375 pound-feet of torque – or about enough power to launch a missile – and more than GM's 6.0-liter V8.

How much does a 5.7 Hemi engine weigh?

A fully dressed 5.7L Hemi engine weighs approximately 560 lbs. However, some sources indicate that newer versions, like the 2009+ "Hemi Eagle," weigh slightly more, at around 591 lbs. 

• 560 lbs: This weight is for the standard 5.7L Hemi engine and includes all components like the intake manifold, accessories, and oil pan. 
• 591 lbs: This weight is for the newer "Hemi Eagle" engines, which have some updated components. 
• Varies by application: The exact weight can vary depending on whether it is a crate engine or one installed in a specific vehicle, so it's always best to check the specifications for your exact application.