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Power in Your Jeep JK

Jeep JK HEMI V8 Conversion

Why the Hemi 5.7 and 6.4 are Better Than the Jeep JK’s 3.8 and 3.6 Engines

Upgrading to a Hemi V8 engine delivers significant benefits over the stock 3.8L and 3.6L engines found in Jeep JK models. Here’s why:

  • Unmatched Power and Torque:
    The Hemi 5.7 and 6.4 engines offer substantially more horsepower and torque, providing a dramatic boost in performance for both on-road driving and off-road challenges.

  • Better Towing and Hauling Capabilities:
    With their higher torque output, Hemi engines are far better suited for towing trailers, hauling gear, or powering through rugged terrain.

  • Proven Durability:
    The Hemi V8 is a tried-and-true platform, known for its reliability and ability to handle extreme conditions, far surpassing the longevity of the stock 3.8L and 3.6L engines.

  • Modern Performance Features:
    The Hemi engines incorporate advanced technologies like variable valve timing and cylinder deactivation (on select models), optimizing fuel efficiency without sacrificing power.

  • Enhanced Driving Experience:
    Whether cruising highways or tackling trails, the Hemi delivers a smoother, more responsive, and exhilarating driving experience compared to the stock engines.

  • Perfect Pairing with the 8-Speed Transmission:
    Pairing a Hemi engine with the 8-speed transmission (learn more here) maximizes performance, creating a Jeep that’s both powerful and efficient.

Upgrade your Jeep Wrangler JK with the legendary performance of a Hemi V8 and experience the transformation firsthand!

How to successfully v8 swap your Jeep JK

Step 1: Decide and Source Your Engine

The first step to successfully V8 swapping your Jeep JK is choosing the right engine. You’ll need to decide between a Hemi 5.7L and a Hemi 6.4L, both offering significant performance upgrades tailored to your needs.

Sourcing your engine can be tricky since donor vehicle and year compatibility are crucial. Before making a decision, reach out to Jeep Speed Shop for expert advice and share your plans in the JSS V8 Swappers Facebook Group to get valuable feedback from a community of experienced enthusiasts. We’re here to help ensure your build is a success!

Step 2: Gather the Necessary Mopar Parts

Completing your V8 swap requires a variety of Mopar parts to ensure a seamless installation. To make the process easier, Jeep Speed Shop has prepared detailed Build-of-Materials (BOM) lists for each engine option.

  • VVT 5.7 Hemi BOM: A comprehensive list of parts specifically needed for the 5.7L Hemi engine swap. LINK
  • 6.4 Hemi w/5.7 Accessories BOM: All the components required for a 6.4L Hemi swap using 5.7L accessories. LINK

Carefully review the corresponding BOM below to ensure you have everything needed for your build. If you’re unsure about any part, don’t hesitate to reach out to Jeep Speed Shop or consult the JSS V8 Swappers Facebook Group for assistance!

Step 3: Purchase Your Jeep Speed Shop Conversion Kit

Once you’ve sourced your engine and reviewed the necessary Mopar parts, it’s time to purchase the Jeep Speed Shop Conversion Kit tailored to your swap. Choose the kit designed specifically for your engine option:

These kits are engineered to make your swap as straightforward as possible, providing high-quality components and expert support. If you have questions about which kit is right for your build, reach out to Jeep Speed Shop for guidance. We’re here to help make your V8 swap a success!

Step 4: Research the Process

Every V8 swap is unique, and understanding how your specific build will come together is a crucial step. While Jeep Speed Shop provides support throughout the process, it’s your responsibility to research and plan your build thoroughly.

Helpful Resources for Your Build:

The more you prepare and learn about the process, the smoother your swap will be! Jeep Speed Shop is always here to assist with any questions along the way.

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