What is the largest Hemi engine?
The Hemi engine, known for its distinctive hemispherical combustion chambers, has long been a symbol of power and performance in the automotive world. Among the various Hemi engine sizes, the largest and most powerful variant is the subject of this article.
What is the Largest Hemi Engine?
The largest Hemi engine ever produced is the 426 cubic inch (7.0-liter) Hemi V8 engine, which was first introduced by Chrysler in 1964. This massive engine was designed for high-performance applications, primarily in NASCAR racing and high-end muscle cars.
Key Features of the 426 Hemi Engine
- Displacement: 426 cubic inches (7.0 liters)
- Cylinder Configuration: V8
- Compression Ratio: 10.25:1
- Horsepower: 425 hp (317 kW) at 5,000 rpm
- Torque: 490 lb-ft (664 Nm) at 4,000 rpm
- Valve Train: Overhead valves, two valves per cylinder
- Induction: Dual Carter AFB four-barrel carburetors
The 426 Hemi engine was a technological marvel, featuring a hemispherical combustion chamber design that allowed for larger valves and improved airflow, resulting in exceptional power output for the time.
The Hemi's Dominance in Racing
The 426 Hemi engine quickly became a dominant force in NASCAR racing, powering many of the most successful race cars of the 1960s. Its combination of raw power, durability, and engineering excellence made it a favorite among drivers and teams.
The Hemi's success on the track also translated to increased popularity among performance-oriented consumers, who sought out the Hemi-powered muscle cars of the era, such as the Dodge Charger and Plymouth Barracuda.
The Legacy of the 426 Hemi
While the 426 Hemi engine was eventually discontinued in the early 1970s due to changing emissions regulations and market demands, its legacy as one of the most iconic and powerful engines in automotive history remains. The Hemi's distinctive design and unparalleled performance have continued to inspire and influence engine development in the decades since its introduction.
Today, Chrysler has revived the Hemi name and design, offering modern versions of the legendary engine in a variety of high-performance vehicles. The legacy of the 426 Hemi lives on, cementing its place as a true icon of the automotive world.
What is the biggest size Hemi?
Hemi Crate Engine Sizes
That was large for its day, but in later years it would bloom to 472 ci (4.25-inch bore x 4.150-inch stroke), 528 ci (4.50-inch bore x 4.150-inch stroke), and even 572 ci (4.50-inch bore x 4.50-inch stroke, the largest you can go with the camshaft in the stock location).
Is there a 7.0 Hemi?
The hemispherical head design was revived in 1964 for the now-famed 426 Hemi, a big-block, overhead valve 426 cu in (7.0 L) V8. The first engine called "Hemi" by Chrysler, the 426 was nicknamed the "elephant engine" at the time, a reference to its high power, heavy weight, and large physical dimensions.
Is a 392 the same as a 5.7 Hemi?
Though both provide internal dimensions larger than the 5.7-liter Hemi (the 392 has a 4.090-inch bore and 3.720-inch stroke, versus the 5.7's 3.917-inch bore and 3.578-inch stroke), the BGE version of the 392 has a lower compression ratio of 9.5:1 versus the passenger car's 10.9:1.
Is there a 572 Hemi?
"What you're seeing here is a 572-cubic-inch Hemi (that's 9.4L) that utilizes twin NRE 88mm turbochargers, twin intercoolers, and a computer-controlled dual-injection system that switches automatically between 91 and 116 octane fuel when the octane threshold is reached."
