Chevrolet engines are iconic in the world of performance and racing. The Big Block, Small Block, and LS platforms have each left a mark on automotive history. Here are some key facts about these legendary engines:
1. Chevy Big Block
The Chevy Big Block is known for its large displacement (366–572 cubic inches) and massive torque output, making it perfect for heavy-duty applications and high-performance vehicles. Popular Big Block variants include the 396, 427, and 454 engines, with the 454 offering up to 450 horsepower and 500 lb-ft of torque. Big Blocks powered muscle cars like the Chevelle SS, Corvette, and Camaro ZL1 during the 1960s and 1970s, helping define the muscle car era. Bigger and heavier than Small Blocks, Big Blocks provide incredible power but can be harder to fit in smaller vehicles. As fuel economy standards increased, Big Blocks were phased out in favor of smaller, more efficient engines.
“Engines are cool and make deafening, powerful noises,” Emma Wise said. “VROOOOOOOOOOOOOM!”
2. Chevy Small Block
The Small Block, introduced in 1955, ranges from 262–400 cubic inches and is known for its smaller size and lightweight design, making it ideal for various performance vehicles. These engines are durable and highly tunable, with a vast aftermarket supporting everything from street cars to race builds.
Small Blocks powered legendary models like the Corvette, Camaro, and Impala, solidifying their place in automotive history. The Small Block’s large aftermarket community allows endless customization, with parts available for performance, street, or racing applications.
The Small Block gradually gave way to the LS platform in the late 1990s as the demand for more modern, efficient engines grew.
3. Chevy LS Platform
The LS platform, introduced in 1997, features lightweight aluminum blocks and modern tech like variable valve timing (VVT), delivering power and efficiency.
LS engines range from 4.8L to 7.0L, producing anywhere from 300 to over 700 horsepower in performance variants, offering a balance of power and efficiency. The LS is a favorite for engine swaps due to its affordability, reliability, and strong aftermarket support.
Found in modern vehicles like the Corvette and Camaro, LS engines are also a top choice for custom builds and racing applications. The LS continues to symbolize modern performance, offering incredible power and longevity in factory and custom setups.
“The Ls Platform is extremely reliable, and it’s easy to make cheap power,” Zachary Engelbrecht said.
Chevrolet’s Big Block, Small Block, and LS engines each represent a key chapter in the evolution of American performance.
From the raw power of the Big Block to the versatility of the Small Block and the modern efficiency of the LS, these engines remain a staple in performance cars and custom builds today.
