Description

5.7L 345ci HEMI Crate Engine – Power, Performance & Perfect Fit for Ram 1500

Introduction

When it comes to legendary American V8 engines, few names inspire as much respect as HEMI. For decades, Mopar enthusiasts have relied on the raw strength and unmistakable performance of the HEMI platform to power muscle cars, trucks, and custom builds. Among the modern lineup, the 5.7L 345ci HEMI Crate Engine stands out as the ideal combination of performance, reliability, and affordability.

Whether you’re restoring a classic, replacing a worn-out motor, or upgrading your truck, the 5.7 HEMI Crate Engine offers a factory-engineered solution with proven results. Designed with Mopar quality and built for long-lasting strength, this engine is especially popular among Ram truck owners. If you’re searching for the perfect balance of daily drivability and V8 power, the 5.7 HEMI Crate Engine for Ram 1500 is the upgrade you’ve been waiting for.

Product Overview

The 5.7L 345ci HEMI Crate Engine is a complete, ready-to-install powerplant engineered for performance and dependability. As a crate engine, it arrives fully assembled with key components, giving you the convenience of a “plug-and-play” installation. That means less downtime, fewer headaches, and more time behind the wheel enjoying your build.

The 5.7 HEMI first debuted in the early 2000s and has since become one of Mopar’s most popular V8s. Known for its hemispherical combustion chamber design, the engine maximizes airflow and combustion efficiency—delivering excellent horsepower, torque, and durability. From muscle cars to heavy-duty trucks, the 5.7 HEMI crate engine is a proven workhorse with the soul of a performance motor.

Key Features & Technical Specifications

The 5.7L 345ci HEMI Crate Engine is more than just another V8. It’s a carefully engineered blend of power, efficiency, and Mopar heritage. Here’s what sets it apart:

• Displacement: 345 cubic inches / 5.7 liters

• Configuration: V8 with hemispherical combustion chambers

• Horsepower: Approx. 360–395 hp (varies by setup)

• Torque: 390–410 lb-ft for towing and acceleration

• Compression Ratio: 10.5:1 for efficient combustion

• Block Material: Cast-iron block for durability

• Heads: Aluminum cylinder heads for weight savings and improved cooling

• Fuel Type: Regular unleaded (premium recommended for maximum performance)

• Design: Modern multi-displacement system (MDS) technology available on certain models

These specifications make the 5.7 HEMI Crate Engine versatile enough for multiple applications. It delivers the low-end grunt needed for towing, the top-end power muscle car enthusiasts crave, and the reliability daily drivers depend on.

Why Choose the 5.7 HEMI Crate Engine?

If you’re debating whether to rebuild your old engine or invest in a new one, here’s why a 5.7 HEMI crate engine is the smarter choice:

1. Factory-Backed Reliability – Built to Mopar standards, ensuring long-lasting durability.

2. Balanced Performance – Strong horsepower and torque without sacrificing drivability.

3. Cost-Effective – Often more affordable than a complete rebuild when factoring in labor and parts.

4. Upgrade Potential – Huge aftermarket support with endless tuning and modification options.

5. Plug-and-Play Convenience – Simplifies installation, making it easier for both professionals and DIY enthusiasts.

For anyone who wants confidence in their build, the 5.7L 345ci HEMI Crate Engine delivers peace of mind along with serious V8 performance.

Perfect Fit: 5.7 HEMI Crate Engine for Ram 1500

The Ram 1500 is one of the most popular full-size trucks in America, and for good reason—it combines comfort, capability, and rugged performance. At the heart of that performance is often the 5.7 HEMI. If your truck’s engine is tired or you’re looking to boost performance, the 5.7 HEMI Crate Engine for Ram 1500 is the ultimate replacement or upgrade.

• Direct Compatibility: Designed to fit seamlessly into many Ram 1500 model years.

• Towing Strength: With over 390 lb-ft of torque, it’s built to handle trailers, boats, and heavy loads.

• Daily Driveability: Smooth and reliable for everyday use, from highways to job sites.

• OEM Integration: Available with ECU and wiring harness options for factory-like installation.

By choosing a crate engine specifically engineered for the Ram 1500, you get the perfect blend of OEM fitment and HEMI power—without the guesswork.

Installation & Compatibility

Installing the 5.7 HEMI crate engine is designed to be as straightforward as possible, but a few considerations ensure the best results:

• Bolt-in Fitment: Many Mopar vehicles, including the Ram 1500, are designed to accept the 5.7 HEMI with minimal modifications.

• ECU & Wiring Harness: Crate packages often include electronics to simplify integration.

• Transmission Pairing: Compatible with multiple Mopar transmissions, including modern 6-speed and 8-speed automatics.

• Cooling & Exhaust: Ensure supporting systems are upgraded to handle the performance.

With the right setup, installation is efficient and stress-free, making this a go-to choice for professionals and hobbyists alike.

Price & Value

One of the biggest advantages of the 5.7L 345ci HEMI Crate Engine is its affordability compared to larger Mopar engines.

• New Mopar OEM Crate Engines: $5,000–$7,500 (depending on package).

• Refurbished or Used Engines: $3,000–$5,000, offering savings with quality checks.

• Aftermarket Options: Vary widely, especially with performance upgrades.

When compared to the 6.4L 392 HEMI Crate Engine or the supercharged Hellcat engines, the 5.7 HEMI delivers incredible value—giving you reliable power without breaking the bank.

Performance Upgrades & Customization

One reason enthusiasts love the 5.7 HEMI crate engine is its flexibility for upgrades. With a vast aftermarket community, you can tailor your build to match your goals:

• Bolt-On Mods: Cold air intakes, headers, and exhaust systems boost airflow and performance.

• Camshaft Upgrades: Unlock higher horsepower and RPM capability.

• ECU Tuning: Maximize gains from bolt-ons or custom setups.

• Forced Induction: Superchargers and turbos can push the 5.7 HEMI beyond 500 horsepower.

Whether you want a reliable daily driver or a high-performance street machine, the 5.7 HEMI is ready to grow with your vision.

Customer Benefits & Use Cases

The 5.7 HEMI crate engine isn’t just for one type of build—it’s versatile enough to power multiple projects:

• Ram 1500 Owners – Restore factory power or upgrade for towing and off-road use.

• Classic Car Restorations – Modern reliability with classic V8 feel.

• Muscle Car Projects – Perfect for Mopar builds like Challengers, Chargers, or custom swaps.

• Off-Road Vehicles – Strong torque for trails, mud, and rugged conditions.

With proper care, this engine easily delivers hundreds of thousands of miles, making it a long-term investment in your vehicle’s future.

Why Buy From Us?

When purchasing a 5.7L 345ci HEMI Crate Engine, choosing the right supplier is just as important as choosing the right engine. Here’s why buying from us gives you the advantage:

• Genuine Mopar & Certified Engines – Authentic quality you can trust.

• Warranty Coverage – Peace of mind with backed protection.

• Competitive Pricing – Affordable rates without sacrificing quality.

• Expert Support – Knowledgeable staff to help with compatibility and installation questions.

• Fast Shipping – Get your crate engine delivered when you need it.

When you shop with us, you’re not just buying an engine—you’re investing in quality, reliability, and customer care.

Conclusion

The 5.7L 345ci HEMI Crate Engine is the ultimate balance of power, affordability, and versatility. With factory-backed reliability, impressive horsepower and torque, and unmatched compatibility with the Ram 1500, it’s the perfect solution for anyone who needs dependable V8 strength.

Whether you’re replacing your current engine, upgrading for more performance, or starting a new project, the 5.7 HEMI crate engine delivers everything you need in a single package. Backed by Mopar engineering and supported by a thriving aftermarket community, it’s no wonder the 5.7 HEMI remains one of the most sought-after crate engines on the market.

Don’t wait—bring legendary HEMI power to your build today with the 5.7L 345ci HEMI Crate Engine.