Converting a Montero into the Pinnacle ’90s SUV featuring a 300-HP Lexus V8 Powerplant

Enthusiasts of Mitsubishi Monteros often share various traits. We appreciate uniqueness, cherish the vintage, and enjoy teamwork. Angelo Ram’s Lexus V8-equipped 1995 Montero exemplifies these qualities—a distinctive and retro vehicle made feasible through the talents of individuals from around the globe.

I came across a discussion about this project in one of the Montero Facebook groups I frequent, and Ram generously provided the backstory and some photos of the build, which I believe you’ll enjoy.

This vehicle captured my interest as it offers a practical fix to one of the Montero’s notable flaws— the truck’s hilariously sluggish performance, particularly today, especially concerning an imported diesel variant. Ram had been driving one of those, and it wasn’t performing well on the mountain roads of the Pacific Northwest where he travels to visit family. Coupled with his wish to drive something distinctive, this fueled his determination to bring this extraordinary truck to life.

“It was all driven by family,” Ram shared with me. “Spending time together … I wanted the ability to power through safely. That’s really my goal with this … I had to maintain 70 mph, with the AC running and everything, while heading to Spokane during the winter when my wife and I would travel there for Christmas and Thanksgiving.” However, to be fair, he also built the truck as he did simply because people believed he couldn’t.

“I was just not happy with the diesels,” he noted. “Going up the mountains, I couldn’t sustain 70 miles an hour uphill and felt like I had to always move to the shoulder. I felt I was causing traffic and discomfort.”

Of course, he could have opted for a newer truck. But as I mentioned—Montero enthusiasts have a different mindset.

Ram’s introduction to Monteros came during his military service. Not in a combat scenario; while stationed in Southern California and transitioning from active duty to the National Guard, another soldier had one and took him off-roading around San Bernardino. “…that was basically my entry into the whole Montero scene,” Ram explained. “I always thought, man, I want one someday. Then one of my buddies who left the military and moved to Alabama started importing cars. He texted me, saying, ‘hey man, remember that car? I have one available. Want it?’”

While the U.S. saw three generations of Monteros (even the first-gen had a Dodge clone called the Raider), none of the American models came with diesel engines—Ram’s Montero is a rare import. In fact, it’s technically a “Shogun,” one of the names for this model in different markets (it was also known as “Pajero” elsewhere). Though conceptually appealing, the diesel engine doesn’t excel at high-altitude highway speeds.

So, the diesel Montero made its way west, where Ram quickly recognized it needed additional power. After a discussion with another Montero owner who suggested a compound turbo system for his diesel, “I just said, forget it, I’m going V8.”

Ram reached out to a mechanic friend for assistance with the engineering and installation. He understood that this wasn’t a project most ordinary shops would take on. “He was a bit uncertain initially, and I was like, ‘Hey, I need trustworthy people … I need quality work … This matters greatly because you’re someone I can meet face-to-face, you know, we’ve got a handshake.’”

Ram and I indeed spent considerable time discussing how fantastic Montero people are, and all the individuals who came together to assist him—but this post is getting lengthy, and we should return to the project!

Initially, Ram considered a BMW M57 engine, but he found the requirements for making it work too complex. After evaluating various engine alternatives, he settled on a 3UZ from a Lexus SC430. These engines are fantastic—dependable, powerful, and accessible. Transitioning from a Mitsubishi diesel to the 3UZ nearly doubles the power (and greatly improves parts availability).

A company called Northwest Toys provided adapters to connect the Toyota engine to the Mitsubishi transfer case. “…it’s literally a straight swap,” Ram informed me (which means the engine was linked to a Lexus gearbox while retaining the original Mitsubishi transfer case). However, as evident from the project images, this was a more intricate endeavor than typical weekend DIY tasks.

“…we did not modify anything from the Mitsubishi T-case back.” Custom mounts and a front crossmember were necessary to accommodate the non-standard engine. That right there serves as the primary foundation of the swap.

Next comes the engine control aspect. Unless you’re working with a carbureted engine and vehicle, ECU tuning is necessary for a modern engine to integrate well with a modern vehicle it wasn’t designed to fit. For this, Ram collaborated with Quantum Auto from Fresno, California. Ultimately, the tuner collaborated with an ECU specialist in Russia who successfully configured the Toyota ECUs for the Montero.

As of now, the truck functions fully and is zipping across the mountains of Washington state during family road trips.

Ram mentions that the project took around 18 months to reach its current state. As with any custom project, it remains an ongoing journey. The last time we spoke, Ram mentioned he was still fine-tuning the truck for his needs (aren’t we all!) and that the air conditioning still needed some work.

To me, the project is particularly remarkable as it combines one of the most durable Japanese powertrains (a Toyota V8) with one of the most aesthetically pleasing SUV designs (the second-generation Montero) of all time. I won’t go so far as to call this vehicle flawless, but in concept, I find it quite impressive.

We discussed the possibility of creating a kit to make these swaps more prevalent—Ram didn’t provide a specific price, but he mentioned that a kit could be feasible if the individual producing the adapters were on board. I believe it would present a fantastic alternative to rebuilding a standard Montero engine. I’m fairly content with the 6G74 V6 in my own ’98 Montero—it delivers surprisingly good fuel efficiency. However, it’s painfully slow on a chilly morning. As I near a quarter-million miles, I have to confess I would be very interested in transitioning to a 3UZ for enhanced power, reliability, and parts availability.

Regarding innovation, Ram doesn’t intend to stop at this V8 swap—he’s formulating ideas for portal axles and further enhancements on this formidable build.

If you have another intriguing build to share, feel free to reach out at [email protected].

**Converting a Montero into the Premier ’90s SUV with a 300-HP Lexus V8 Engine**

The Mitsubishi Montero, recognized for its durability and off-road capabilities, has developed a cult following among SUV fans. With its classic ’90s design and robust build, the Montero serves as an ideal base for customization. One of the most thrilling transformations involves replacing its original engine with a potent 300-horsepower Lexus V8. This article delves into the steps and considerations required for this ambitious endeavor.

### Why Opt for the Montero?

The Montero, especially the second-generation version produced from 1991 to 1999, is lauded for its off-road capabilities, roomy interior, and striking design. Its body-on-frame construction and solid axles make it a sturdy option for off-road activities. However, the factory engine, while dependable, might lack the power and performance that modern enthusiasts seek. This is where the Lexus V8 becomes relevant.

### Choosing the Appropriate Lexus V8 Engine

The Lexus 1UZ-FE engine, a 4.0-liter V8, is a favored choice for this conversion. Renowned for its smooth operation and strong performance, it generates approximately 300 horsepower and 300 lb-ft of torque. This engine is not only robust but also relatively lightweight, making it an excellent match for the Montero. Furthermore, the 1UZ-FE is known for its durability and longevity, aligning well with the Montero’s rugged character.

### Preparation and Strategy

Before embarking on the engine swap, diligent planning is crucial. Here are essential steps to consider:

1. **Research and Financial Planning**: Familiarize yourself with the expenses involved, including engine purchase, transmission modifications, and any necessary fabrication work. Establish a realistic budget to prevent overspending.

2. **Tools and Work Area**: Ensure access to the proper tools and a suitable workspace. A garage with adequate space and equipment will streamline the process.

3. **Parts Acquisition**: Along with the Lexus V8 engine, gather essential components like a compatible transmission, engine mounts, wiring harness, and exhaust system. Investigate aftermarket parts that can boost performance and reliability.

### The Engine Swap Procedure

1. **Removing the Original Engine**: Start by disconnecting the battery and draining fluids. Take out the current engine and transmission, ensuring to label all wiring and hoses for easy reinstallation.

2. **Modifying the Engine Bay**: Adjustments may be necessary in the Montero’s engine bay to fit the Lexus V8. This may involve modifying engine mounts and ensuring adequate clearance for the new engine.

3. **Installing the Lexus V8**: Position the Lexus engine in the Montero’s engine bay. Secure it using custom engine mounts and connect the transmission. Verify that all components align properly to prevent future complications.

4. **Wiring and Electronics**: Integrate the Lexus wiring harness with the Montero’s electrical system. This may require custom wiring to ensure all sensors and components work effectively.

5. **Exhaust System**: Construct a new exhaust system that fits the Lexus V8 and complies with local emissions regulations. A performance exhaust can enhance power and improve sound.

6. **Cooling System**: Upgrade the cooling system to handle the increased power output. This may entail installing a larger radiator and ensuring proper airflow.

### Final Adjustments and Evaluation

After completing the engine swap, thoroughly inspect all systems. Look for leaks, secure all connections, and confirm the cooling system is operating effectively. Once everything is in place, it’s time for a test drive.

### Performance Enhancements

To further improve the Montero’s capability, consider additional modifications:

– **Suspension Upgrades**: Boost off-road capabilities with upgraded shocks and springs.
– **Tires and Wheels**: Opt for all-terrain tires and lightweight wheels for enhanced traction and handling.
– **Braking System**: Upgrade the braking system to cope with the added power, ensuring safety during off-road excursions.

### Conclusion

Converting a Mitsubishi Montero into the ultimate ’90s SUV featuring a 300-horsepower Lexus V8 engine is a gratifying project for automotive aficionados. With meticulous planning, the right components, and a dedication to quality craftsmanship, this conversion can yield a powerful, dependable, and stylish SUV that pays tribute to the golden era of off-roading while delivering contemporary performance. Whether for everyday driving or adventurous off-roading, this custom Montero is sure to attract attention and provide an exhilarating driving experience.