1. Displacement: The 331 Chevy has a displacement of 331.1 cubic inches (5.4 liters). It achieved this by increasing the cylinder bore from 3.75 inches to 4.00 inches while keeping the same 3.00-inch stroke as the 265.
2. Power and Performance: The 331 Chevy was known for its increased power and performance compared to the 265. It delivered impressive power outputs ranging from 215 horsepower to 290 horsepower, depending on the specific configuration and year.
3. Fuel System: Most 331 Chevy engines came equipped with a Rochester four-barrel carburetor, ensuring sufficient fuel delivery for performance applications.
4. Applications: The 331 Chevy found its way into various Chevrolet vehicles during its production run, including the Bel Air, Impala, Biscayne, Brookwood, and Corvette. It was a popular choice for muscle cars and hot rods due to its inherent performance capabilities.
5. Design Features: The 331 Chevy shared many design features with the 265, including the small-block architecture and the "mousehole" combustion chambers. However, it had reinforced blocks and stronger internals to handle the increased displacement and power output.
6. Collectible Status: Today, the 331 Chevy is a highly sought-after engine among classic car enthusiasts and collectors. Its robust construction and vintage appeal make it a valuable asset in the world of classic hot rods and muscle cars.
7. Customization and Tuning Potential: The 331 Chevy engine offers excellent potential for customization and tuning. It responds well to modifications such as camshaft upgrades, ported cylinder heads, and high-performance intake manifolds. This allows enthusiasts to extract even more power and performance from the engine.
Overall, the 331 Chevy is a significant engine in Chevrolet's history, showcasing the evolution and capabilities of the small-block platform. Its combination of durability, power, and tunability has made it a favorite among classic car builders and enthusiasts alike.
