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  • 392 Hemi Conversion

    Hemi Conversions

  • V8, LT & HEMI Swaps

    Your Rig. A Whole Lot More Power.

    There’s nothing quite like putting V8 power behind the wheel of a Jeep.

    Whether you’re looking for the proven performance of an LS conversion or the unmistakable power of a HEMI, Primal 4x4 can help you choose the right setup and handle the conversion from start to finish.

    More power. More torque. More capability. Built the Primal way.

  • 6.6l LT Conversion

    LT - V8 Conversions

AMW 4x4 Certified Installer

Primal 4x4 is an AMW 4x4 Certified Installer, equipped to professionally install AMW4x4 HEMI and high-performance engine conversion packages.

Contact us today to schedule your consultation

Hemi and LS Engine Swaps

Hemi and LS Engine Swaps

Transform your vehicle's performance with our comprehensive selection of Hemi and LS engine swap parts and accessories. Whether you're dropping a legendary Chrysler Hemi or a proven GM LS engine into your build, we have the components you need to make your swap successful.

Why Choose a Hemi or LS Swap?

Engine swaps are one of the most popular performance upgrades for enthusiasts looking to maximize power, reliability, and aftermarket support. Both Hemi and LS platforms offer:

  • Proven reliability and performance
  • Extensive aftermarket support
  • Modern fuel injection and engine management
  • Significant horsepower and torque gains
  • Compact packaging for tight engine bays

Our Engine Swap Product Range

Browse our selection of engine swap components including motor mounts, transmission adapters, wiring harnesses, exhaust headers, cooling systems, and complete swap kits designed to simplify your build.

5.7 Hemi

395 HP / 410 LB-FT
A well-rounded HEMI upgrade that adds the V8 power and torque your Jeep has been missing.

Start your Hemi build

392 6.4L Hemi

485 HP / 475 LB-FT
Big HEMI power for drivers looking for a significant performance upgrade.

Start your Hemi build

HELLCAT

717 HP / 650 LB-FT
Supercharged HEMI power for builds where “enough” isn't really part of the vocabulary.

Start your Hellcat build

840 Demon

840 HP / 770 LB-FT
Extreme performance for an extreme Jeep build.

Start your Demon build

Hellaphant 1025

1,025 HP
The top of the food chain. Four-digit horsepower for the Jeep owner who wants to take the build all the way.

Start your Hellaphant build

LT - V8 Conversions

LX3 V8 2020 - Current

2020 – Current | 550HP 6.6L LX3 V8 engine and stronger 8-speed conversion for Jeep Gladiator JT and Jeep Wrangler JL

Start your LS build

Which One Is Right for You?

LT or HEMI

You don’t have to know exactly which engine you need before you call us. That’s what we’re here for.

LT CONVERSIONS

Proven V8 Performance

A great choice for Jeep owners looking for reliable V8 power with multiple engine and transmission combinations available.

Great for: Daily drivers, trail rigs and performance-focused builds.

HEMI SWAPS

Mopar Power. Serious Performance.

Keep it in the Mopar family and give your Jeep the sound, torque and power of a HEMI—from a strong street-and-trail setup to something completely wild.

Available options include:
5.7 HEMI • 392 / 6.4 HEMI • Hellcat • Demon • Hellaphant

Power options from 395 HP to 1,025 HP.

Choose Your Level of Power

You don't need to sort through dozens of packages. Start with what you want your Jeep to do, and we'll help you find the engine to match.

A V8 Swap Is More Than an Engine.

Dropping a V8 into a Jeep is the easy part.

Making the engine, transmission, electronics, cooling, drivetrain and the rest of the vehicle work together is where experience matters.

Primal 4x4 approaches the conversion as a complete system—not just an engine installation—so your finished Jeep performs the way it should.

How Your Swap Comes Together

01 — Tell Us About Your Jeep

We start with your vehicle, how you use it and what you want out of the build.

02 — Choose Your Power

We'll help you compare LS and HEMI options and determine the right engine and drivetrain combination for your goals.

03 — We Build It

Our technicians handle the conversion and carefully integrate the components needed to make the entire package work together.

04 — Testing & Tuning

Before we hand you the keys, the completed conversion is tested and tuned for performance and reliability.

Built for More Than a Dyno Number.

Horsepower gets the attention. How the Jeep performs when you actually drive it is what matters.

Whether you're building a more powerful daily driver, a capable trail Jeep or an all-out performance build, we'll help you put together a V8 conversion around the way you intend to use it.

Professional Installation • Quality Components • Complete Conversions • Built & Tested by Primal 4x4

Ready to Put a V8 in Your Jeep?

You bring us the Jeep and tell us what you want it to do.

We'll help you figure out the rest.

START YOUR V8 BUILD

Our Promise To You

  • We’ll Recommend What’s Right for Your Build

    No two builds are the same. We take the time to understand your vehicle, how you use it, and what you want to accomplish before recommending parts or upgrades. You’ll get a setup that makes sense for your goals—not a list of parts you don’t need.

  • We’ll Do It Right the First Time

    The right parts are only half the equation. From fitment and installation to the way every component works together, we pay attention to the details that make a build perform the way it should. No shortcuts. No guesswork.

  • We’ll Stand Behind the Work

    Our relationship with you doesn’t end when your vehicle leaves the shop. We stand behind the work we do and want you to feel confident in your build long after you drive away. When you have questions or you’re ready for the next upgrade, Primal 4x4 is here.