5.7L Hemi V8 Engine

5.7L HEMI V8 Engine

The 5.7L HEMI V8 Engine is a popular Mopar powerplant used across Dodge, Chrysler and Ram vehicles. Depending on the generation, the engine can be used for replacement applications, performance builds, restorations and custom swaps.

The 5.7L HEMI has a displacement of approximately 5.7L / 345 cubic inches. A typical Gen III 5.7L specification uses a 3.92-inch bore and 3.58-inch stroke. Factory output varies significantly by vehicle and model year. For example, the 2018 Dodge Challenger 5.7L HEMI used Fuel Saver Technology, while the 2026 Ram 1500 version produces 395 HP and up to 556 Nm (410 lb-ft) of torque.

Key Specifications

• Engine: Chrysler/Dodge/Ram 5.7L HEMI V8
• Displacement: 5.7L / approximately 345 cu. in.
• Configuration: 90-degree V8
• Aspiration: Naturally aspirated
• Fuel: Gasoline
• Bore: Approximately 3.92″
• Stroke: Approximately 3.58″
• Block: Cast iron on many applications
• Cylinder Heads: Aluminum on typical Gen III applications
• Valvetrain: Pushrod OHV
• VVT: Application dependent
• Cylinder Deactivation: Application dependent
• Horsepower/Torque: Engine and vehicle configuration dependent

Common Applications

Depending on the exact engine generation:

• Dodge Challenger R/T
• Dodge Charger R/T
• Dodge Durango R/T
• Dodge Ram / Ram 1500
• Jeep Grand Cherokee
• Chrysler 300
• Other compatible Dodge, Chrysler, Jeep and Ram applications
• Custom HEMI engine swaps

Swap Requirements

A 5.7L HEMI swap may require compatible:

• ECU/PCM
• Wiring harness
• Engine mounts
• Transmission
• Fuel system
• Cooling system
• Exhaust system
• Throttle and pedal components
• Accessory drive
• Custom tuning and electronic integration