How much horsepower does the 6.4 Power Wagon have?

The 6.4 Power Wagon delivers 410 horsepower from its 6.4-liter HEMI V8, a figure that has remained consistent across recent model years. This article explains the horsepower figure, the engine details, and how it fits into the Power Wagon lineup.

Engine specifications and horsepower

The Power Wagon is the off-road flagship of Ram's heavy-duty lineup. It relies on a 6.4-liter HEMI V8 that produces 410 horsepower at 5,600 rpm and 429 lb-ft of torque at 4,000 rpm. This engine is paired with an eight-speed automatic transmission and a four-wheel-drive system designed for rugged terrain, including off-road-oriented gearing and protective hardware. Across current model years, the horsepower rating has remained at 410 hp, making it a stable performance baseline for the Power Wagon.

Performance context

Horsepower is just one facet of the Power Wagon’s capability. The stronger torque delivery, combined with specialized off-road suspension, skid plates, and locking differentials, helps the vehicle crawl over obstacles and maintain traction in challenging conditions, while still providing workable highway acceleration for a heavy-duty pickup.

Model-year consistency and market variations

In recent generations, the 6.4L HEMI in the Power Wagon has been rated at 410 hp with 429 lb-ft of torque. While the core figure remains consistent, there can be minor calibration or equipment differences by year or market, so the exact numbers on a given window sticker may vary slightly.

Bottom line

The 6.4 Power Wagon’s horsepower figure of 410 hp is central to its off-road performance, working in concert with its torque, gearing, and chassis tuning to deliver capable traction and climb ability in demanding terrain.

Summary

The Ram Power Wagon equipped with the 6.4-liter HEMI V8 produces 410 horsepower and 429 lb-ft of torque. This rating has remained stable across recent model years, underscoring the model’s focus on rugged off-road capability alongside heavy-duty work use. For precise figures for a specific year or market, check the vehicle’s official specification sheet or window sticker.

Can a Ram 2500 6.4 pull a fifth wheel?

We have a 2016 Ram 6.4 373 gears, and have towed a 10300 lb fifth wheel to AK, CA, OR, NV, several times. No problem. Just put in gas and keep track of your mileage between gas stops. The fifth wheel towed quite well and only once did we have chucking.

What is special about the Ram 2500 Power Wagon?

The Ram Power Wagon is a specialized off-road variant of the Ram 2500. It stands out with features like front and rear locking differentials, a sway bar disconnect system, and a factory-installed 12,000-pound Warn winch. These off-road enhancements make it a go-to choice for off-road enthusiasts.

What is the life expectancy of a 6.4 Hemi?

The 6.4L Hemi engine has an average life expectancy of 200,000 to 300,000 miles when properly maintained, with the lifespan depending heavily on driving habits and maintenance routines. Key factors for longevity include consistent oil changes using high-quality oil, proper driving habits, and addressing issues promptly, though some models may be susceptible to issues like lifter failure. 
Factors affecting lifespan

• Maintenance: Regular maintenance, including using the recommended 0W-40 oil and changing it on schedule, is crucial for longevity. 
• Driving conditions: The engine's life can be shortened by frequent heavy towing or hauling. Good driving habits can help it reach the higher end of its lifespan. 
• Known issues: Lifter and lifter roller problems are a well-documented concern with this engine, so it's important to be aware of the "Hemi tick" noise and have it addressed. 

How to extend engine life

• Follow the maintenance schedule: Adhere strictly to the manufacturer's recommended service intervals for oil changes and other fluid services. 
• Use quality fluids: Always use the high-quality, thin 0W-40 oil recommended for this engine. 
• Drive with care: Avoid excessive strain on the engine, especially if you are not towing frequently. 
• Address problems immediately: Don't ignore unusual noises or symptoms. Promptly addressing issues, such as a ticking sound, can prevent more severe and costly damage down the line. 

Is the Ram 6.4 Hemi a good motor?

The RAM 6.4L Hemi is a good engine for its intended purpose as a powerful and reliable heavy-duty workhorse, with strong towing and payload capacity and lower maintenance costs than a diesel. However, it is known for poor fuel economy and has some limitations for high-performance modifications due to the stock internal components like the bottom end. A potential, but less common, issue is lifter failure, which can be a costly repair. 
Pros

• Strong performance: Produces 410410410 horsepower and 429429429 pound-feet of torque (on the 2025 model), with impressive towing and payload ratings that make it ideal for heavy-duty tasks. 
• Lower cost: Has a lower initial purchase price and lower maintenance expenses compared to the Cummins diesel option. 
• Durability: Built for heavy-duty use and generally reliable when used within its designed parameters. 
• Ride quality: Offers a less stiff ride and lighter steering than diesel counterparts, making it more comfortable for daily driving. 
• Fuel economy: While not great, some users report its fuel cost per mile is cheaper than a diesel over time. 
• Modifications: The exhaust can be modified without voiding the warranty. 

Cons

• Poor fuel economy: Expect low MPG, especially when towing. 
• Exhaust manifold issues: The stock exhaust manifold can warp from high temperatures, leading to leaks and requiring replacement. 
• Bottom end limitations: The stock bottom end is not built for extreme power increases. Non-forged pistons can be a weak point for significant modifications. 
• Lifter failure: Though not a universal issue, some 6.4L Hemis can experience a "Hemi tick" due to lifter failures, which can lead to expensive repairs. 
• Outdated design: The engine design is older compared to newer heavy-duty engines from competitors, and it lags in some metrics. 

Overall
The 6.4L Hemi is a good, robust engine for those who need a powerful gas-powered truck for towing and hauling and don't need to push its performance to extreme limits. Its strong performance, durability, and lower cost make it a respectable choice, but it's important to be aware of the potential for lower fuel economy and the risk of lifter failure, particularly if you plan to significantly modify the engine.