Did Toyota Buy the 5.7 Engine from Gm?

No, Toyota did not buy the 5.7 engine from GM. The Toyota 5.7L V8 (1UR-FE) is an entirely in-house design developed independently by Toyota for trucks and SUVs like the Tundra and Sequoia.

Key Takeaways

• Toyota’s 5.7L V8 is an original design: The 1UR-FE engine was developed entirely by Toyota, not acquired from General Motors or any other manufacturer.
• GM’s 5.7L engine is a small-block V8: GM’s 5.7L (350 cubic inch) engine, used in vehicles like the Silverado and Camaro, is part of their long-standing small-block family and unrelated to Toyota’s design.
• Different engineering philosophies: Toyota focused on reliability, fuel efficiency, and low-end torque, while GM prioritized performance and widespread aftermarket support.
• No corporate partnership on this engine: There is no evidence of a licensing agreement, joint development, or purchase between Toyota and GM for the 5.7L V8.
• Both engines serve different markets: Toyota’s 5.7L powers full-size trucks and SUVs in North America, while GM’s 5.7L has been used across a broader range of vehicles, including muscle cars and work trucks.
• Misinformation spreads online: Confusion arises from similar displacement and the popularity of both brands, but the engines are mechanically and historically distinct.
• Toyota continues to innovate independently: The automaker’s commitment to in-house engineering ensures quality control and brand consistency across its powertrain lineup.

Did Toyota Buy the 5.7 Engine from GM? The Truth Behind the Myth

If you’ve spent any time browsing car forums, YouTube comments, or chatting with fellow gearheads at a car meet, you’ve probably heard the rumor: “Toyota bought the 5.7 engine from GM.” It sounds plausible—after all, both companies make powerful V8 engines around that displacement. But is there any truth to it?

Let’s clear the air right away: **Toyota did not buy the 5.7-liter engine from General Motors.** The Toyota 5.7L V8, officially known as the 1UR-FE, is a completely original engine developed in-house by Toyota. It was designed specifically for North American markets to power full-size trucks and SUVs like the Toyota Tundra, Sequoia, and Land Cruiser. Meanwhile, GM’s 5.7L engine—often called the “350” due to its 350 cubic inch displacement—is part of the iconic small-block V8 family that has been in production since the 1950s.

So where did this rumor come from? And why do so many people believe it? In this article, we’ll dive deep into the history, engineering, and legacy of both engines to set the record straight. Whether you’re a Toyota loyalist, a GM fan, or just curious about how engines are made, you’ll come away with a clearer understanding of how these two automotive giants approach V8 power—and why their paths never crossed on this particular engine.

The Origins of Toyota’s 5.7L V8: The 1UR-FE Engine

To understand why Toyota didn’t buy the 5.7L engine from GM, we need to look at how Toyota developed its own V8 powerhouse. The story begins in the early 2000s, when Toyota was preparing to launch a new full-size pickup truck to compete directly with American heavyweights like the Ford F-150, Chevrolet Silverado, and Ram 1500.

At the time, Toyota’s Tundra was using a 4.7L V8, but it wasn’t quite strong enough to match the towing and hauling capabilities of its rivals. Toyota knew it needed something bigger, more powerful, and more refined to win over American truck buyers. That’s when the company set out to design a new engine from the ground up.

Why Toyota Built Its Own 5.7L V8

Toyota’s engineers had a clear mission: create a V8 engine that delivered strong low-end torque for towing, excellent fuel efficiency for daily driving, and the kind of long-term reliability Toyota is known for. They also wanted the engine to meet strict emissions standards in the U.S., especially in California and other states with tough environmental regulations.

Rather than licensing an existing engine or partnering with another automaker, Toyota chose to develop the 1UR-FE entirely in-house. This allowed them full control over the design, materials, and manufacturing process. The result was a 5.7-liter (346 cubic inch) V8 that debuted in the 2007 Toyota Tundra.

Key Features of the 1UR-FE Engine

The 1UR-FE is a modern, high-tech engine packed with features that reflect Toyota’s engineering philosophy:

– **Aluminum block and heads:** Keeps weight down while maintaining strength.
– **Dual VVT-i (Variable Valve Timing-intelligent):** Optimizes performance and efficiency across the RPM range.
– **Direct ignition system:** Improves combustion efficiency and reduces maintenance.
– **Electronic throttle control:** Provides smooth, responsive power delivery.
– **High compression ratio (10.2:1):** Balances power and fuel economy.

With 381 horsepower and 401 lb-ft of torque (in later versions), the 1UR-FE gave the Tundra class-leading towing capacity—up to 10,000 pounds when properly equipped. It was a game-changer for Toyota in the full-size truck market.

Where the 1UR-FE Is Used

The 5.7L V8 didn’t just power the Tundra. It also found a home in other Toyota vehicles, including:

– Toyota Sequoia (2008–2021)
– Toyota Land Cruiser (2008–2021, in North America)
– Lexus LX 570 (rebadged Land Cruiser with luxury features)

These vehicles are known for their rugged capability, smooth ride, and Toyota’s legendary durability. The 1UR-FE played a big role in that reputation.

GM’s 5.7L Engine: The Legacy of the Small-Block V8

Now let’s turn to General Motors. GM’s 5.7L engine is one of the most iconic powerplants in automotive history. Known as the “350” (because it displaces 350 cubic inches), this engine has been in production in various forms since 1967. It’s part of GM’s small-block V8 family, which includes engines like the 5.0L, 5.3L, 6.0L, and 6.2L.

The History of the GM 5.7L Small-Block

The original 5.7L small-block V8 was introduced in the late 1960s as a higher-performance option in cars like the Chevrolet Camaro, Corvette, and full-size sedans. Over the decades, it evolved through multiple generations, including the legendary LT1 and LS1 variants.

Unlike Toyota’s 1UR-FE, which was designed specifically for trucks and SUVs, GM’s 5.7L has been used in a wide range of vehicles—from muscle cars and sports cars to pickup trucks and even boats. Its versatility and aftermarket support have made it a favorite among car enthusiasts and racers.

Key Features of the GM 5.7L Engine

GM’s 5.7L V8 has gone through many updates, but some core features have remained consistent:

– **Cast iron block (in most versions):** Durable and cost-effective, though heavier than aluminum.
– **Overhead valve (OHV) design:** Simple, reliable, and easy to work on.
– **High torque output:** Especially in truck applications, where low-end grunt is key.
– **Massive aftermarket support:** Thousands of performance parts available.

In its most common truck form (like in the Chevrolet Silverado or GMC Sierra), the 5.7L V8 produces around 355 horsepower and 383 lb-ft of torque—slightly less than the Toyota 1UR-FE, but still very capable.

Why GM Didn’t Sell the Engine to Toyota

Given GM’s long history with the 5.7L, it’s natural to wonder why Toyota didn’t just buy the design instead of building its own. But there are several reasons this never happened:

– **Corporate independence:** Toyota has a strong tradition of developing its own engines. Licensing from a competitor would go against that philosophy.
– **Different design goals:** GM’s 5.7L was optimized for performance and cost, while Toyota prioritized efficiency, emissions, and refinement.
– **No business relationship:** There’s no record of any engine licensing deal between Toyota and GM for this engine.

In short, Toyota had no need—and no interest—in buying GM’s 5.7L engine. They built something better suited to their needs.

Comparing the Toyota 1UR-FE and GM 5.7L V8s

Now that we’ve covered the origins of both engines, let’s compare them side by side. While they share a similar displacement, they’re fundamentally different in design, purpose, and performance.

Engine Design and Technology

| Feature | Toyota 1UR-FE | GM 5.7L (LS/LT) |
|——–|—————|—————–|
| Block Material | Aluminum | Cast Iron (most versions) |
| Head Material | Aluminum | Aluminum (later versions) |
| Valve Train | DOHC, 4 valves per cylinder | OHV, 2 valves per cylinder |
| Variable Valve Timing | Dual VVT-i | VVT (on later models) |
| Ignition System | Direct ignition | Coil-on-plug |
| Throttle Control | Electronic | Electronic (drive-by-wire) |

The Toyota 1UR-FE uses a more modern dual overhead cam (DOHC) design with four valves per cylinder, which allows for better airflow and higher RPM potential. GM’s 5.7L uses a traditional overhead valve (OHV) design with two valves per cylinder, which is simpler and more durable but less efficient at high RPMs.

Performance and Efficiency

In terms of raw power, the Toyota 1UR-FE has a slight edge:

– **Toyota 1UR-FE:** 381 hp, 401 lb-ft torque
– **GM 5.7L (truck version):** 355 hp, 383 lb-ft torque

But power isn’t everything. The Toyota engine is also more fuel-efficient, thanks to features like variable valve timing and a higher compression ratio. In real-world driving, Tundra owners often report better gas mileage than Silverado owners with the 5.7L.

Reliability and Longevity

Both engines are known for their durability, but Toyota’s reputation for reliability gives the 1UR-FE an edge. Many Tundra owners report driving over 300,000 miles with minimal issues, especially with regular maintenance.

GM’s 5.7L is also reliable, but it’s more prone to issues like lifter failure (especially in the LS1 and early LS2 engines) and oil consumption. That said, with proper care, GM’s 5.7L can also last a very long time.

Towing and Hauling Capability

When it comes to towing, the Toyota 1UR-FE shines. The 2007–2021 Tundra with the 5.7L can tow up to 10,000 pounds, which was class-leading at the time. The GM 5.7L in the Silverado can tow up to 9,600 pounds—still impressive, but not quite as strong.

This difference comes down to torque delivery. The 1UR-FE produces peak torque at lower RPMs, making it better for heavy loads and steep grades.

Why the Rumor Persists: The Origins of the Myth

So if Toyota didn’t buy the 5.7L engine from GM, why do so many people believe they did? The rumor likely stems from a mix of confusion, misinformation, and the natural tendency to assume big companies share technology.

Similar Displacement and Market Segment

Both engines are 5.7 liters and used in full-size trucks. That similarity alone is enough to cause confusion, especially among casual car fans who don’t dig into the technical details.

Shared Use of V8 Engines

Both Toyota and GM are known for their V8 engines, and both have a strong presence in the North American truck market. When two companies compete in the same space with similar products, it’s easy to assume they’re copying each other.

Misinformation Online

The internet is full of half-truths and myths. A single forum post or YouTube comment claiming “Toyota bought the engine from GM” can spread like wildfire, especially if it sounds plausible. Without fact-checking, these claims get repeated until they’re accepted as fact.

Lack of Public Knowledge About Engine Development

Most people don’t know how much time, money, and engineering goes into designing a new engine. They assume it’s easier to buy one than build one. But for a company like Toyota, developing an in-house engine is often the better long-term strategy.

No Evidence of a Deal

Despite the rumors, there’s no documentation, press release, or credible source confirming that Toyota ever purchased or licensed the 5.7L engine from GM. If such a deal had happened, it would have been big news in the automotive world.

Toyota’s Commitment to In-House Engineering

One of the reasons Toyota didn’t buy the engine from GM is the company’s deep commitment to in-house engineering. Toyota has a long history of designing its own engines, transmissions, and even hybrid systems.

The Toyota Way: Continuous Improvement and Control

Toyota’s manufacturing philosophy, known as the “Toyota Production System,” emphasizes quality, efficiency, and continuous improvement. By developing its own engines, Toyota can control every aspect of the design and production process, ensuring consistency and reliability.

Examples of Toyota’s Engine Innovation

– **2JZ-GTE:** The legendary inline-6 engine from the Supra, known for its tuning potential.
– **1GR-FE:** A 4.0L V6 used in the 4Runner and Tacoma, praised for its durability.
– **Hybrid Synergy Drive:** Toyota’s proprietary hybrid system used in the Prius and other models.

The 1UR-FE is just one example of Toyota’s ability to create world-class engines without relying on outside suppliers.

Why Licensing Isn’t Always the Answer

While some automakers license engines (like Mazda using Toyota hybrids), Toyota prefers to build its own. This gives them full control over performance, emissions, and brand identity. It also protects them from supply chain issues or changes in licensing terms.

The Future of Toyota’s V8 Engines

With the rise of electric vehicles and stricter emissions standards, the future of large V8 engines is uncertain. Toyota has already begun transitioning to smaller, more efficient powertrains, including turbocharged V6s and hybrid systems.

The End of the 1UR-FE

In 2022, Toyota discontinued the 5.7L V8 in the Tundra, replacing it with a twin-turbocharged 3.4L V6 hybrid engine. The new engine produces more power (437 hp) and better fuel economy, while still offering strong towing capacity.

This marks the end of an era for the 1UR-FE, but it doesn’t mean Toyota is abandoning performance. The new hybrid V6 shows that Toyota is still innovating—just in a different direction.

Will Toyota Ever Use a GM Engine?

It’s highly unlikely. Toyota has no need to license engines from competitors, and doing so would go against their engineering culture. Even as the industry shifts toward electrification, Toyota is developing its own hybrid and electric technologies.

Conclusion: The Truth About Toyota and the 5.7L Engine

To sum it up: **Toyota did not buy the 5.7L engine from GM.** The 1UR-FE is a completely original engine developed by Toyota for its full-size trucks and SUVs. While GM’s 5.7L small-block V8 is an iconic engine in its own right, the two are unrelated in design, development, and ownership.

The rumor likely persists due to the engines’ similar displacement and use in competing vehicles, but there’s no evidence to support the claim. Toyota’s commitment to in-house engineering, combined with its focus on reliability and efficiency, made it natural for the company to build its own V8 rather than license one from a competitor.

So the next time someone asks, “Did Toyota buy the 5.7 engine from GM?” you can confidently say no—and explain why Toyota’s engineers built something even better.

Frequently Asked Questions

Did Toyota ever use a GM engine in any of its vehicles?

No, Toyota has never used a GM engine in any of its production vehicles. Toyota develops its own engines and has a strong tradition of in-house engineering.

What vehicles use the Toyota 5.7L V8 engine?

The Toyota 5.7L V8 (1UR-FE) was used in the Toyota Tundra, Sequoia, Land Cruiser, and Lexus LX 570 from 2007 to 2021.

How much horsepower does the Toyota 5.7L V8 produce?

The Toyota 1UR-FE engine produces 381 horsepower and 401 lb-ft of torque in its most common configuration.

Is the GM 5.7L engine reliable?

Yes, the GM 5.7L small-block V8 is generally reliable, though some versions (like early LS engines) can have issues with lifters or oil consumption if not properly maintained.

Why did Toyota discontinue the 5.7L V8?

Toyota replaced the 5.7L V8 with a more efficient twin-turbo V6 hybrid engine to meet stricter emissions standards and improve fuel economy.

Can you swap a GM 5.7L engine into a Toyota Tundra?

Technically yes, but it’s extremely complex and expensive. The engines use different mounts, electronics, and transmissions, making a swap impractical for most owners.