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