Did you know that Toyota built a Hemi engine 60 years ago, and hardly anyone remembers? It’s a fascinating piece of automotive history that’s often overlooked, but it’s a story worth telling. When you hear the term 'Hemi engine,' your mind likely jumps to Chrysler’s iconic HEMI V8s, whether it’s the classic versions from the '50s and '60s or the modern ones powering Dodge muscle cars and RAM trucks. But here’s where it gets interesting: Chrysler wasn’t the only automaker to experiment with hemispherical combustion chambers.
And this is the part most people miss: While Ford and Chevrolet dabbled with their own hemi designs in the 1960s, Toyota was quietly developing its own hemi V8s—not for the global market, but exclusively for Japan’s domestic luxury sedans. This isn’t just a footnote in automotive history; it’s a testament to Toyota’s engineering prowess and its commitment to innovation, even if the world largely forgot about it.
Toyota’s hemi V8, introduced in the 1960s, was a marvel of its time. Designed for the high-end Toyota Century, this engine wasn’t meant to conquer international markets. Instead, it was a symbol of Japanese luxury and engineering excellence, tailored specifically for the domestic market. What’s even more surprising is that Toyota continued producing these V8s well into the 1990s, long after Chrysler had retired its original HEMI engines. But Toyota didn’t stop there—they also incorporated hemispherical combustion chambers into smaller engines, which would later become familiar to enthusiasts worldwide.
1964 was a pivotal year for Japan, marking not only the Tokyo Olympics and the debut of the Shinkansen bullet train but also the introduction of Japan’s first mass-produced V8 engine: the Toyota V-series. This all-aluminum, 2.6-liter overhead-valve V8 was a significant achievement, but what made it truly stand out were its hemispherical heads, co-developed with Yamaha. This engine powered the upscale Crown Eight luxury sedan, setting the stage for Toyota’s foray into high-end automotive engineering.
In 1967, the Crown Eight was succeeded by the Toyota Century, a car that redefined luxury. The Century wasn’t just a vehicle to drive—it was a car to be driven in, embodying opulence and sophistication. For three decades, the Century relied on the V-series hemi V8, which Toyota continuously refined, increasing its displacement to 4.0 liters by 1982 and introducing advancements like electronic fuel injection. But here’s where it gets controversial: When Toyota replaced the V8 with a naturally aspirated V12 in the mid-1990s, it marked the end of an era. The 1GZ-FE V12 remains Toyota’s only production V12 engine, exclusive to the Century, which has since become its own distinct luxury brand.
Now, here’s a thought-provoking question: Does an engine need to be a V8 to be a hemi? The answer is no. Chrysler, for instance, produced a HEMI-headed inline-6 in the early '70s that rivaled many V8s, though it was only available in Australia. Similarly, Toyota used hemispherical heads in non-V8 engines, such as the four-cylinder OHV 3T engine, which powered popular export models like the Corolla and Celica in the 1970s and early '80s. These smaller hemi engines were remarkably potent for their size and laid the groundwork for Toyota’s future high-output, small-displacement engines.
While Toyota’s hemi V8 lineage ended in the 1990s, it’s intriguing that the Century continued using the older OHV engine long after Toyota introduced the more modern DOHC 1UZ V8 in models like the Lexus LS400. Since then, Toyota’s V8s have only grown more powerful, culminating in the 472-hp 5.0-liter V8 that powers the current Lexus IS 500.
So, what do you think? Is Toyota’s forgotten hemi V8 a missed opportunity for global recognition, or was it a brilliant move to focus on Japan’s luxury market? Let us know in the comments—we’d love to hear your thoughts!
