Description
5.7 HEMI Engine: Complete Guide, Specifications, Performance & Buying Guide
5.7 HEMI Engine Forsale is one of the most respected American V8 engines ever produced. Developed by Chrysler as part of the third-generation HEMI family, the 5.7 HEMI combines modern engineering with legendary V8 performance. Since its introduction in 2003, it has powered millions of Ram, Dodge, Jeep, and Chrysler vehicles, becoming a favorite among enthusiasts, truck owners, and performance builders.
Whether you’re looking for a replacement engine, planning a high-performance build, or searching for a reliable V8 for your project vehicle, the 5.7 HEMI remains one of the best choices available.
What is the 5.7 HEMI Engine?
The 5.7 HEMI is a 345 cubic inch (5,654 cc) naturally aspirated gasoline V8 engine featuring:
- Third-generation HEMI architecture
- Cast iron deep-skirt engine block
- Aluminum cylinder heads
- OHV (Pushrod) valvetrain
- Hemispherical combustion chambers
- Dual spark plugs per cylinder
- Sequential Multi-Port Fuel Injection (SMPI)
- Variable Valve Timing (VVT) on later models
- Multi-Displacement System (MDS) cylinder deactivation on many applications
5.7 HEMI Engine Specifications
| Specification | Details |
|---|---|
| Engine Type | 90° V8 OHV |
| Displacement | 5.7L (345 CID) |
| Bore | 99.5 mm (3.92 in) |
| Stroke | 90.9 mm (3.58 in) |
| Block Material | Cast Iron |
| Cylinder Heads | Aluminum |
| Compression Ratio | 9.6:1–10.5:1 (varies by model) |
| Fuel System | Sequential Multi-Port Fuel Injection |
| Valves | 16-Valve |
| Spark Plugs | 16 (2 per cylinder) |
| Fuel Type | Premium or Regular (varies by calibration) |
| Aspiration | Naturally Aspirated |
| Horsepower | 345–395 HP |
| Torque | 375–410 lb-ft |
| Redline | Approximately 5,800 RPM |
Performance Features
The 5.7 HEMI is designed to provide:
- Strong low-end torque
- Excellent towing capability
- Reliable daily driving
- Smooth highway cruising
- Outstanding aftermarket performance support
Popular upgrades include:
- Cold air intake
- Performance camshaft
- Long tube headers
- ECU tuning
- Ported cylinder heads
- High-flow intake manifold
- Supercharger kits
- Forged rotating assembly for high horsepower builds
With proper upgrades, the 5.7 HEMI can comfortably exceed 500 horsepower, while fully built engines can produce significantly more.
Vehicles Equipped with the 5.7 HEMI
The engine has been installed in numerous Chrysler, Dodge, Jeep, and Ram vehicles, including:
- Dodge Charger R/T
- Dodge Challenger R/T
- Dodge Magnum R/T
- Chrysler 300C
- Dodge Durango
- Jeep Grand Cherokee
- Ram 1500
- Ram 2500
- Ram 3500
- Dodge Aspen
- Chrysler Aspen
5.7 HEMI Engine Forsale Reliability
The 5.7 HEMI is widely regarded as a dependable V8 when maintained properly. Routine maintenance such as regular oil changes, quality filters, cooling system service, and spark plug replacement helps maximize engine life. Many owners report exceptionally high mileage with proper care.
Common 5.7 HEMI Problems
Like any engine, the 5.7 HEMI has some known issues:
- Exhaust manifold bolt failures
- HEMI lifter and camshaft wear (commonly called the “HEMI tick”)
- MDS lifter wear
- Water pump leaks
- Broken exhaust manifold studs
- Ignition coil failures
- Oil leaks from aging seals
Preventative maintenance greatly reduces the likelihood of major repairs.
Why Buy a 5.7 HEMI?
The 5.7 HEMI remains popular because it offers:
- Legendary American V8 sound
- Excellent towing capability
- Strong horsepower and torque
- Reliable daily operation
- Huge aftermarket support
- Easy maintenance
- Excellent engine swap potential
- Proven long-term durability
Buy 5.7 HEMI Engines from Forged & Stocked Engines
At Forged & Stocked Engines, we supply premium-quality 5.7 HEMI engines for customers worldwide.
We offer:
- Low-mileage used engines
- Rebuilt engines
- Remanufactured engines
- Performance engine packages
- Complete engine assemblies
- Engine accessories and components
- Worldwide shipping
- Professional customer support
Every engine is carefully inspected before shipment to ensure quality and customer satisfaction.
Frequently Asked Questions
How much horsepower does a 5.7 HEMI produce?
Depending on the model year and application, output ranges from approximately 345 HP to 395 HP.
Is the 5.7 HEMI reliable?
Yes. With proper maintenance, the 5.7 HEMI is known for excellent durability and long service life.
Can a 5.7 HEMI be supercharged?
Absolutely. The engine has extensive aftermarket support, and supercharger kits are commonly used to achieve substantial power gains.
Does the 5.7 HEMI use two spark plugs per cylinder?
Yes. The engine uses 16 spark plugs, with two per cylinder, to improve combustion efficiency.
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