2018 RAM 2500 6.4 HEMI Specs: Complete Guide to Performance, and Capabilities
If you’re in the market for a heavy-duty truck that packs a punch, the 2018 RAM 2500 with the 6.4L HEMI V8 engine is definitely worth considering. This powerhouse of a truck offers best-in-class standard horsepower, impressive towing capabilities, and a robust build that’s perfect for both work and play. Whether you’re hauling heavy trailers or just need a reliable workhorse, the 6.4L HEMI engine delivers exceptional performance. Let’s dive into what makes this truck so special and explore its specifications, real-world performance, and practical advantages.
Engine Specifications and Performance
6.4L HEMI V8 Engine Fundamentals
The 6.4L HEMI V8 engine is a marvel of engineering, boasting 410 horsepower and 429 lb-ft of torque. This engine is built to last, with a cast-iron block and aluminum cylinder heads designed to handle the rigors of heavy-duty use. It features variable valve timing (VVT) for improved efficiency and performance across a wide range of driving conditions.
Performance Metrics
- Horsepower: 410 hp @ 5,600 rpm
- Torque: 429 lb-ft @ 4,000 rpm
- Maximum Engine Speed: 5,800 rpm (limited)
- Fuel Requirement: Unleaded regular, 87 octane (R+M)/2
Real-World Performance
In real-world conditions, the 6.4L HEMI engine delivers smooth power delivery and excellent towing stability. It’s not uncommon for owners to report confidently towing trailers up to 10,000 pounds without feeling underpowered. However, fuel efficiency is a trade-off; expect around 10-15 mpg combined, depending on your driving habits and load conditions.
Transmission and Drivetrain
66RFE Six-Speed Automatic Transmission
The 66RFE six-speed automatic transmission is well-matched to the 6.4L HEMI engine, offering smooth shifts and reliable performance. It features a full electronic control system and an electronically controlled converter clutch for improved efficiency.
Transfer Case and 4×4 Systems
For those who need four-wheel drive capability, the 2018 RAM 2500 offers a robust BW 44-46 electric shift transfer case or a BW 44-47 manual shift transfer case. The available 4×4 Off-Road package includes hill descent control, tow hooks, and all-terrain tires, making it perfect for off-road enthusiasts.
Towing and Payload Capabilities
Towing Capacities
The 2018 RAM 2500 with the 6.4L HEMI engine can tow up to 16,320 pounds when properly equipped. This makes it an excellent choice for those who need to haul large trailers or RVs.
Payload Specifications
- Maximum Payload Capacity: Up to 3,990 pounds
- Payload varies by configuration: Regular cab models typically offer higher payload capacities than crew cab models.
Weight and Dimensional Specifications
Vehicle Weight Ratings
- Base Curb Weight: Approximately 6,014-7,231 pounds
- Gross Vehicle Weight Rating (GVWR): 10,000 pounds
- Gross Combined Weight Rating (GCWR): 19,800 pounds
Exterior Dimensions
- Wheelbase: Varies by cab/bed configuration, 140.5-160.5 inches
- Overall Length: 230-232 inches (configuration dependent)
- Width (without mirrors): 79.4 inches
- Height: 76.2 inches
- Ground Clearance: 6.1-6.3 inches
Suspension and Chassis Features
Suspension Systems
The 2018 RAM 2500 features a five-link coil spring rear suspension, which provides a smoother ride and better handling compared to leaf spring setups. An auto-level rear air suspension is also available for improved load leveling and towing stability.
Brake System
- Brake Type: 4-wheel disc with ABS
- Front Brake Rotor Diameter: 14 inches
- Rear Brake Rotor Diameter: 14 inches
Available Configurations and Trim Levels
Cab and Bed Configurations
- Regular Cab with 8-foot bed
- Crew Cab with 6-foot, 4-inch bed
- Crew Cab with 8-foot bed
- Mega Cab with 6-foot, 4-inch bed
Key Trim Levels
- Tradesman: Work-ready base model
- SLT: Mid-range with additional comfort features
- Laramie: Premium interior and exterior appointments
- Power Wagon: Off-road specialized model with factory WARN winch and locking differentials
- Limited: Luxury-focused top trim level
Technology and Interior Features
Infotainment System
The Uconnect 8.4-inch touchscreen system is intuitive and easy to use, offering features like Apple CarPlay and Android Auto. For 2018, it includes 4G LTE connectivity and improved resolution.
Driver Assistance and Towing Technology
- Rearview Camera: Standard on all models for enhanced safety
- Trailer Reverse Steering Control System: Available for easier trailer maneuvering
- Trailer Tire Pressure Monitoring System: A valuable safety feature for trailer owners
Real-World Performance and Ownership
Acceleration and Handling
- 0-60 mph Time: Approximately 8.7 seconds
- Quarter-Mile Performance: 16.5 seconds @ 85.9 mph
- Lateral Acceleration: 0.71g (7 m/s²)
Fuel Economy and Range
While the 6.4L HEMI engine isn’t known for fuel efficiency, it provides a substantial driving range with its 32-gallon fuel tank. Real-world efficiency varies significantly depending on load, terrain, and driving conditions.
Maintenance Considerations
- Engine Oil Capacity: 7.0 quarts (6.6 liters)
- Recommended Oil Change Intervals: Follow manufacturer guidelines for severe-duty usage
- Cooling System Service: Regularly inspect for towing applications
Comparison with Other Engines in the 2018 RAM 2500 Lineup
5.7L HEMI V8 vs. 6.4L HEMI V8
| Feature | 5.7L HEMI V8 | 6.4L HEMI V8 |
|---|---|---|
| Horsepower | 383 hp | 410 hp |
| Torque | 400 lb-ft | 429 lb-ft |
| Towing Capacity | Up to 13,910 lbs | Up to 16,320 lbs |
| Payload Capacity | Up to 3,050 lbs | Up to 3,510 lbs |
6.4L HEMI V8 vs. 6.7L Cummins Turbo Diesel
| Feature | 6.4L HEMI V8 | 6.7L Cummins Turbo Diesel |
|---|---|---|
| Power Delivery | High-revving gas engine | Low-end torque diesel |
| Horsepower | 410 hp | 370 hp (with automatic) |
| Torque | 429 lb-ft | 800 lb-ft (with automatic) |
| Towing Capability | Up to 16,320 lbs | Up to 17,320 lbs |
| Acquisition Cost | Lower than Cummins option |
Conclusion
The 2018 RAM 2500 with the 6.4L HEMI V8 engine is an excellent choice for those seeking a powerful, reliable, and versatile heavy-duty truck. Its impressive towing and payload capabilities, combined with its robust build and comfortable interior, make it a top contender in its class. While it may not offer the fuel efficiency of smaller engines, its performance and durability are well worth the trade-off. Whether you’re a seasoned truck owner or just entering the market, this truck is definitely worth considering.
