Interested in performing your LS3 engine conversion on your own? We offer the same components used in our turn-key conversions as a do-it-yourself engine upgrade kit. Each kit comes with a detailed instruction manual to guide you through the process.
Bruiser Conversions fully integrated LS3 engine conversion system for the Jeep JK/JKU Wrangler maintains the original equipment manufacturers (OEM) functionality of all vehicle systems that were supplied with your vehicle. All systems that were functional prior to the conversion process will be functional after the conversion has been completed, this includes: instrument cluster, indicators, gauges, powertrain control systems, cruise control, hill descent mode, tip start, and tap shift. Our system retains the factory PCM and the Chrysler OBD II port. Bruiser Conversions provides the only fully integrated LS3 engine conversion for the JK/JKU Wrangler.
2007 - 2011 Jeep JK/JKU Wrangler Specific Upgrades
Early model JK/JKU Wranglers equipped with an automatic transmission require an upgrade from the 42RLE. Bruiser has elected to incorporate the NAG-1 722.6/W5A580/WA580*** in our conversion. This upgrade includes a transmission, torque converter, wiring harness, and a performance tuned TCM. Along with the upgraded transmission, a new center console and automatic transmission shifter assembly are provided. This allows the driver access to the late-model tap shift option and updating the OEM software to include PRNDL display functionality on the OEM instrument cluster. Cruise control and auto start features, if equipped, are retained after the conversion.
This compact 5-speed automatic transmission is rated at 580 ft-lb torque input capacity. It has been used in a wide range of vehicles including the Dodge Challenger, Chrysler 300 SRT8, Porsche, Mercedes-Benz Sprinter, Dodge Magnum SRT8, and the supercharged Jaguar X308. A performance tuned TCM is provided with each engine conversion system.
**This conversion is intended for off-road use only**
Complete Do-It-Yourself JK LS Engine Installation Kit
New GM Performance LS3 crate engine
Performance tuned PCM
Performance tuned TCM
Low-mileage NAG-1/WA580 Transmission
Transmission Wiring Harness
Engine to NAG-1 Transmission Adapter
Self-aligning Engine Mount Brackets
Engine Wiring Harness
Stainless Steel Exhaust Y-pipe
Cold Air Intake with K&N Filter
Radiator & Heater Hoses
Battery Tray & TIPM Relocation Bracket
Detailed Instruction Manual
As a manufacturer of Jeep parts, our company Jeeps are our sales tools. We are very careful when choosing the modifications we make because our vehicle's performance is a direct reflection of our company when on the trail. It is of paramount importance that our vehicles are on the cutting edge and mechanical failures are kept to a minimum. So when the time came to upgrade the power plant in one of our 2014 JK with a reliable and powerful LS motor there was only one company in the United States to call, Bruiser Conversions. What Jeff and his team were able to do in 6 days is mind blowing and the finished product is FACTORY perfect. Every nut and bolt checked and not a single issue. We would recommend Bruiser and Jeff's entire team to anyone in the market who demands excellence in perform...
I have had the pleasure of wheeling with the Bruiser team for many years, as well as driving their conversions. The trucks handle great both on and off-road and their power is something you just won't find anywhere else. People can't help but look, gawk and ask a ton of questions because they are so unique in both their looks and performance. Plus, the entire team is made up of some of my favorite people to be around with due to their positive attitudes and constant desire to make everything function at the best of it's potential.
Like many jeep owners I set out to build the ultimate go anywhere jeep to provide amazing family wheeling excursions. Initially built was a mild mod JKU, however the anemic 3.6L became the 'weak link' so I sough out an engine conversion. After determining the LS3 as the most optimum power plant, I then began to search for a builder/installer and chose a local SEMA Jeep Builder. As I explained to the selected builder, 'there are 2 ways to do things, the right way and the wrong' no in-between. Unfortunately for me that selected builder had very little integrity and built a very expensive paperweight. After those in the Jeep community found out what happened many stepped in to assist with my build. We began an extensive rebuild, and we chose the industry leader in LS3 Conversions, Bruiser ...
I've got a 430hp LS3 installed in my 2012 JK and I love it! I'm running 37's on one ton axles and the factory V6 was not enough to move the thing down the road. I found myself not wanting to drive my Jeep anymore... Until I found Bruiser Conversions. Their LS3 conversion woke the Jeep up and turned it into a monster!!! I daily drive my Jeep now because I enjoy driving it so much. It sounds and feels amazing. The most fun part is red light racing little sports cars and seeing the look on their faces when you blow the doors off them in a lifted Jeep. The most amazing part of the conversion, however, is how it just works. All functions work as they did from the factory, there aren't any funny warning lights or messages on the dashboard. The A/C blows cold. The factory tap shift works. Noth...
Being in the off-road industry myself, I am very picky about where my Jeep is worked on. Add to that the major work of an engine swap and you quickly realize that trust in the shop is EVERYTHING! Jeff and the crew are at the top of their game! The attention to detail is unmatched and the quality could not be any better. Simply put... they know what they are doing. Add to that the friendly service and you have a winning combination. Thanks again guys!