Is The 392 A Big Block Powerhouse?

Is a 5.7L Hemi engine classified as a big block or a small block? Despite its 5.7-liter displacement, the 5.7L Gen. III Hemi engine is typically categorized as a small-block engine. This classification is based on its displacement size. This engine design features a hemispherical combustion chamber with two spark plugs per cylinder and includes small wedge flats. Additionally, it boasts impressive intake and exhaust ports. This information was last updated on February 1, 2021.

What exactly constitutes a big block engine? A big block engine is characterized by its substantial physical size and heavier weight in comparison to a small block engine. These larger engines feature expansive bores, extended strokes, as well as more substantial valves and ports, all of which contribute to their remarkable power-producing capabilities. To draw a vivid analogy, while a small block engine can be likened to a quick and nimble welterweight boxer, a big block engine can be compared to a devastating heavyweight fighter, possessing the potential to deliver astonishing levels of power and performance. This contrast in engine sizes and characteristics underscores the significant impact that big block engines can have in various applications. [Published on February 5, 2019]

Let’s delve into the remarkable capabilities of the 392 engine block, particularly for those with a passion for Mopar vehicles. At the heart of this powerplant is a robust forged steel crankshaft, generously provided by the factory. This crankshaft is known for its exceptional strength, and it’s well-equipped to withstand significant power outputs. In fact, it’s been proven capable of handling horsepower levels exceeding 1,200, making it a formidable choice for high-performance enthusiasts. [Date: April 25, 2022]