Jeep JK / JKU Gen V V8 Swap Kit | LT Engine Mount & Install Kit

Fits: 2007–2018 Jeep Wrangler JK / JKU Transmission: 6-Speed | 8-Speed | 10-Speed
Supported Engines: L83, L84, L86, L87, LT1, L8T, L8P (all Gen V) Starting At: $1,049.99

What's Included:

• WWM Fully Adjustable Upper Engine Block Mounts
• WWM Bolt-In Frame Engine Saddle
• Heavy-Duty Corvette Engine Bushings
• Transmission Crossmember Conversion Bracket
• Drive-By-Wire Gas Pedal Adapter Mount
• WWM Powertrain Module & Fuse Box Fender Mount Bracket
• WWM OE Jeep JK Shifter Cable Adapter Bracket
• Gen V Conversion Fuel Supply Line (39½ in.)

⭐⭐⭐⭐⭐ What Builders Are Saying

"Absolutely transformed the Jeep to enjoy driving. 6.2 Denali and the LT2 intake push the 40s and the heavy 4-door no problem."
— Keith W. ✅ Verified Customer

"By far one of the best upgrades you could ever do to your Jeep Wrangler is swap out the underpowered drivetrain for a Gen V GM platform. Great service, extensive knowledge, extremely professional."
— Mountainless MTB ⭐⭐⭐⭐⭐ Verified Customer

"They promptly shipped my parts. Incredibly knowledgeable and willing to assist. Great people."
— David S. ✅ Verified Customer

"Knowledge on all gen 5 and square body conversion. Helped me with the set up I need for my 81 Jimmy."
— Midtown Roofing ⭐⭐⭐⭐⭐ Verified Customer

"Was a huge help! I'm building a massive 30+ inch lifted SAS truck. Always answered my questions and had some parts laying around he helped me with. Really great guy and huge help."
— DustAllDay ⭐⭐⭐⭐⭐ Verified Customer

🔧 Built to order. Allow 2–4 weeks for production before shipping.

🚨 Please Read Entire Description First 🚨

Jeep JK Gen V LT Swap Custom Builders Mount & Component Kit (2007–2018)

The Engineered Low-Slung Engine Mount Solution for 2007–2018 Jeep Wrangler JK V8 Conversions

Harsh drivetrain angles and mismatched installation parts can completely ruin a Jeep Wrangler JK V8 conversion. At Wicked Wrench Motorsports, we engineered our custom Jeep JK Gen V LT swap motor mounts to sit the engine significantly lower in the chassis frame rails than our competitors.

This exclusive low-slung, adjustable design delivers optimal driveline angles, maximum hood clearance, and a smooth, vibration-free ride on lifted street rigs and extreme off-road trails.

Because our custom motor mounts optimize engine placement for better rear pinion angles, this GM Gen V LT engine swap layout requires a center-style accessory drive setup or a centered water pump for proper frame clearance (such as the water pump found on 2020-Up GM Trucks). See Rule #5 below for full details.

🔥 Supported GM Gen V V8 Platforms

Our adjustable mounting foundation is precision-engineered to accommodate all modern direct-injected GM Gen V powertrain configurations:

• L83 & L84 (5.3L V8): Ultimate high-efficiency daily driver choices.
• L86 & L87 (6.2L V8): Premium, massive high-horsepower truck/SUV pullouts.
• LT1 (6.2L Performance V8): Requires truck accessory drive or recommended LT2 intake conversion.
• L8T & L8P (6.6L V8): Heavy-duty, high-torque iron block and crate platforms.

📦 What is Included in the Base Kit ($1,049.99)

• WWM Fully Adjustable Upper Engine Block Mounts: Precision CNC-cut steel block adapter plates engineered with a slotted, adjustable design to fine-tune your engine's physical placement within the bay while handling massive high-RPM torque.
• WWM Bolt-In Frame Engine Saddle: A rugged, heavy-duty structural steel cross-saddle that drops directly between your factory Jeep JK frame rails. No guesswork alignment required.
• Heavy-Duty Corvette Engine Bushings: Premium, high-performance bushings that deliver rock-solid stability and extreme off-road durability without transferring harsh vibration to the cabin.
• Transmission Crossmember Conversion Bracket: Engineered for flawless drivetrain centerline alignment when adapting your modern GM transmission to the factory JK crossmember locations.
• Drive-By-Wire Gas Pedal Adapter Mount: A custom-fit under-dash mounting bracket designed to securely lock a heavy-duty electronic throttle pedal into place. (Pedal option and updated mounting hardware selected below).
• WWM Powertrain Module & Fuse Box Fender Mount Bracket: A heavy-duty ECM / Fuse Box bay bracket tailored to your specific build. For 6L Transmissions: ECM / Fuse Box Fender Mount above the old Mopar ECM location. For 8L or 10L Transmissions: ECM / Fuse Box / TCM Combo Bracket. (Select your exact transmission speed below so we pack the correct bracket).
• WWM OE Jeep JK Shifter Cable Adapter Bracket: A precision-bent steel adapter that retains your factory interior JK/JKU center console shifter. Connects your stock cable directly to GM 6L, 8L, or 10L automatic transmissions for clean, crisp gear detents.
• Gen V Conversion Fuel Supply Line (39½ in.): A purpose-built fuel line that connects your factory Jeep JK fuel tank directly to the Gen V engine fuel system — no fabrication required.

🛠️ Pro Builder Installation & Clearance Rules

⚙️ 1. The Valvetrain Rule (DOD / AFM Delete)

While your engine is pulled for the swap, we highly recommend performing a full mechanical DOD / AFM delete. Eliminating these failure-prone factory collapsing lifters ensures long-term powertrain reliability on the trail. At Wicked Wrench Motorsports, we source and install industry-leading Scoggin-Dickey Parts Center (SDPC) DOD Delete Kits for our in-house shop builds.

🏎️ 2. The Gen V Intake Manifold Rule (LT2 vs. LT1 vs. Truck)

When doing a Jeep LT swap, we always use a Gen V LT2 intake manifold rather than a standard truck intake. The LT2 manifold allows your custom A/C lines to fit beautifully, makes your intake air tube infinitely easier to route, prevents rubbing against the factory Jeep hood, and delivers a much cleaner, professional show-quality finish.

The LT2 intake does need to be modified to fit. If you want a pre-modified intake, [Click Here].

🚨 Why You Should Avoid the LT1 Intake

We strongly recommend NOT using a standard LT1 intake manifold on a Jeep JK conversion. The LT1 throttle body faces excessively downward, making the custom intake tube extremely difficult to fabricate, and actively robs your engine of critical low-and-mid-range horsepower and torque.

📐 3. Engine Alignment Rule

When setting your adjustable motor mounts during installation, you must slide and adjust the engine as far to the right (passenger side) as possible. This is mandatory to clear your factory Jeep JK steering shaft and create the required engine bay room for an efficient V8 cooling system radiator and fan package.

⚙️ 4. Transfer Case Sourcing & Generation Rule

Every builder doing a Gen V LT swap uses either a 1st Generation (2007–2011) 3.8L 241J transfer case or a high-end custom rock crawler T-case. The newer 2nd Gen (2012–2018) 3.6L Pentastar transfer case will absolutely not work for a GM swap.

• 2007–2011 JK owners: you already have the correct 241J T-case.
• The 241J requires the input shaft replaced with a 32-spline output and a clocking ring.
• 241J Clocking Ring: [Click Here]
• 241J 32-Spline Input Shaft: [Click Here]

If swapping a 2012–2018 JK, source a 1st Gen 3.8L 241J pullout from B&R Auto Wrecking — they ship nationwide at the best prices.

💧 5. L8T Water Pump Rule

If running an L8T setup, ensure you have the correct centered water pump design to clear our low-slung frame mounts. Watch our [Wicked Wrench Motorsports YouTube Guide] before finalizing your order.

🔗 Supplemental Builder Links & Upgrades

• Accessory Drive Parts: Need specific pulleys or tensioner? [Click Here]
• Power Steering Parts: P/S Bracket or Pump: [HERE]
• ❄️ A/C Compressor: We recommend a front-facing layout to clear your JK frame rail. Compressor and billet block: [Click Here]
• Cooling Upgrades: Dual Cooler bracket for power steering and transmission cooler behind your grill: [Click Here]
• ⚙️ 8-Speed 4x4 Transmission: 8L90 or 8L80 setup: [GEN V 8-Speed 4X4 Transmission Conversion Kit] — also see our [YouTube Video Instructions].

🔌 Complete Your Drivetrain Wiring: This hardware kit handles your mechanical fitment, but you will need electronics to bring it to life. Click here to add the Wicked Wrench Pro-Series Integration Harness (Starting at $2,400) to your order to retain your factory dashboard gauges, A/C functionality, and automatic shifting without being forced into a $10k package.

🚨 CRITICAL ORDERING INSTRUCTION: ADD BASE KIT FIRST 🚨

To ensure our automated system properly calculates and matches your custom hardware layout, you must click "Add to Cart" on this Base Kit before selecting any upgrade links or adding supplemental components to your order. Following this sequence guarantees your custom-built package transfers flawlessly to our fabrication queue without any missing pieces or configuration errors.

⏱️ Custom Build Lead Time

Because every single Jeep JK/JKU LT installation package is custom-built to your exact specifications, please allow 2 to 4 weeks for order fulfillment. You are ordering exactly what you want and choosing only the specific components your unique project requires. This tailored fabrication process eliminates wasted parts and guarantees flawless performance on the trail.