Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8 - 68303090AC | All Mopar Parts
← 6.4 Hemi Engine

Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8 - 68303090AC | All Mopar Parts

New In stock · Ships from Ohio
$424.75 USD · free U.S. shipping over $1500

Looking to buy the powerful Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8 (68303090AC)? Spoon Parts USA offers this incredible engine, ready to upgrade your performance. Order now for fast shipping directly to your garage!

  • ✓ Secure checkout
  • ✓ 30-day returns
  • ✓ U.S. based support

Product details

Unleash Unrivaled Power with the Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8

Elevate your vehicle’s performance to an exhilarating new level with the Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8, part number 68303090AC, available right here at Spoon Parts USA. This formidable engine is engineered for enthusiasts demanding top-tier power, reliability, and the undeniable roar of a true HEMI. Whether you’re building a custom project, restoring a classic, or simply upgrading your current ride, this 485 horsepower, 475 lb.-ft. torque powerhouse is the ultimate choice.

The Legacy of HEMI Performance

Mopar’s HEMI engines have been synonymous with performance for decades, and the Gen III series continues that proud tradition with modern engineering and technology. The 392 cubic inch (6.4L) displacement ensures a broad power band and incredible torque delivery across the RPM range, providing instant throttle response and spine-tingling acceleration. This particular Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8 – 68303090AC is a testament to Mopar’s commitment to high-performance automotive parts.

Key Features & Specifications

When you buy this Mopar 392 Crate Engine from Spoon Parts USA, you’re investing in a meticulously crafted piece of automotive engineering. Here’s what makes it stand out:

  • Engine Type: Gen III HEMI V8
  • Displacement: 392 cubic inches (6.4 Liters)
  • Horsepower: 485 hp @ 6100 rpm
  • Torque: 475 lb.-ft. @ 4200 rpm
  • Block: Cast Iron with 4-bolt main caps
  • Crankshaft: Forged Steel
  • Pistons: Forged
  • Cylinder Heads: Aluminum, HEMI with hemispherical combustion chambers
  • Valves: 2.14″ intake, 1.65″ exhaust
  • Camshaft: Hydraulic Roller
  • Compression Ratio: 10.9:1
  • Intake Manifold: Aluminum high-flow
  • Oil Pan: Rear Sump design (may vary with application, check fitment)
  • Ignition: Coil-on-plug ignition system
  • Part Number: 68303090AC

This engine ships as a complete long block assembly, typically including the intake manifold, throttle body, fuel injectors, coil packs, water pump, and front-end accessory drive components (as included from Mopar). For a comprehensive setup, consider our range of compatible transmissions and drivetrain components. We also offer other high-performance options like the Gen 3 6.4L 392 Hemi Crate Engine by Mopar Performance – 6.4L 485hp 68303090AB.

Applications and Fitment

The Mopar 392 Crate Engine is incredibly versatile, fitting a wide array of projects from classic muscle car restomods to modern vehicle swaps. While it is commonly associated with performance versions of Chargers, Challengers, and Grand Cherokees, its adaptability allows it to be integrated into custom builds requiring serious power. Due to its modern electronic nature, proper engine management (ECU) and wiring harness will be required for a successful installation. Always consult a professional or refer to comprehensive installation guides for specific fitment details in your particular chassis. For those with extreme power goals, consider options like the Gen III 392CI Hemi Stroker 650HP Crate Engine, Gen III 345CI Hemi 450HP Crate Engine if you’re looking to push beyond 485hp.

Installation Notes and Recommendations

Installing a crate engine like the Mopar 392 HEMI requires specialized knowledge and tools. We highly recommend professional installation by a certified mechanic or a high-performance shop experienced with HEMI swaps. Key considerations include:

  • Engine Management: A compatible stand-alone ECU or factory-style ECU and wiring harness are essential.
  • Fuel System: Upgraded fuel pump, lines, and injectors (if not included or insufficient) will be necessary to support the power output.
  • Exhaust System: A high-flow exhaust system is recommended to maximize performance and sound.
  • Cooling System: An upgraded radiator and cooling fan assembly will be crucial to maintain optimal engine temperatures.
  • Drivetrain: Ensure your transmission, transfer case (if applicable), driveshaft, and differential are robust enough to handle the increased power and torque. Spoon Parts USA specializes in these components and can help you find suitable upgrades.

Quality Assurance and Warranty

As a genuine Mopar product, this 392 Crate Engine comes with the assurance of quality and reliability that only an OEM manufacturer can provide. It is backed by Mopar’s standard warranty. Spoon Parts USA is committed to providing only authentic, high-quality automotive parts. When you purchase from us, you receive a brand-new, factory-sealed engine, ensuring you get the full manufacturer’s warranty and peace of mind. We stand behind the products we sell and are here to support your performance journey.

Why Purchase from Spoon Parts USA?

Spoon Parts USA is your trusted source for high-performance Mopar parts, especially when it comes to formidable engines like the 392 HEMI. Here’s why savvy enthusiasts choose us:

  • Authentic Mopar Products: We only sell genuine Mopar parts, ensuring quality, fitment, and manufacturer warranty.
  • Competitive Pricing: We strive to offer the most competitive prices on the market, making your dream build more accessible.
  • Expert Support: Our team is knowledgeable about transmissions, transfer cases, and drivetrain components, and we’re here to answer your questions and guide you.
  • Fast & Reliable Shipping: We understand you want your parts quickly, and we work diligently to process and ship orders efficiently.
  • Secure Shopping: Your online shopping experience is secure and straightforward, from browsing to checkout.

Don’t compromise on power or quality. Invest in the Mopar 392 Crate Engine 6.4L SRT Gen III HEMI V8 from Spoon Parts USA and transform your vehicle into a true performance machine. This engine is a cornerstone for any serious build, offering an incredible foundation for power and speed.

Frequently Asked Questions (FAQ)

Q: Does this Mopar 392 Crate Engine come complete and ready to run?

A: The Mopar 392 Crate Engine (68303090AC) is typically sold as a ‘long block’ assembly with key components like the intake, throttle body, and fuel injectors included. However, it is not a ‘turn-key’ engine. You will need to supply an appropriate engine management system (ECU), wiring harness, accessory drive, and other ancillary components to get it running in your specific application.

Q: What kind of fuel does the Mopar 392 HEMI require?

A: This high-performance engine is designed to run on premium unleaded gasoline (91 octane or higher) to achieve its advertised horsepower and torque ratings and ensure proper engine longevity. Using lower octane fuel can lead to pre-ignition or knocking, which can damage the engine.

Q: Can I use this engine in an older vehicle?

A: Yes, the Mopar 392 Gen III HEMI is a popular choice for ‘restomod’ projects in older vehicles. However, it requires significant modifications, including a custom engine mount, a compatible transmission, an upgraded fuel system, and a standalone engine management system. Professional installation and fabrication are highly recommended for such swaps.

Q: What is the warranty on this Mopar crate engine?

A: As a genuine Mopar part, the 392 Crate Engine (68303090AC) is backed by Mopar’s standard manufacturer’s warranty. The specific terms and length of the warranty can vary, so please refer to Mopar’s official documentation or contact us for the most current warranty information.

Q: What else do I need to buy to complete a swap with this engine?

A: Beyond the engine itself, common additional components for a successful swap include: a compatible transmission (automatic or manual), a proper engine control unit (ECU) and wiring harness, an upgraded fuel system, a high-flow cooling system (radiator, fan), a performance exhaust, and heavy-duty drivetrain components (driveshaft, axles, differential) capable of handling the increased power. Spoon Parts USA can assist you in finding suitable transmissions, transfer cases, and other drivetrain parts to complement this magnificent engine.

Related products

More 6.4 Hemi Engine

Related parts customers also add to cart.

See all →