The 1967 Chevrolet Impala represents a pinnacle of American muscle car engineering, offering a spectrum of performance that catered to both the family sedan buyer and the dedicated gearhead. While the model year is often associated with the radical Camaro and the Corvette Sting Ray, the Impala lineup held its own with factory horsepower figures that could satisfy most drivers. Understanding the true 1967 Impala horsepower requires looking beyond the badge and examining the specific engine configuration nestled beneath the hood.
The Engine Lineup: Base Power to Super Sport Brute
Chevrolet entered the 1967 model year with a robust selection of powerplants, ranging from economical efficiency to outright performance dominance. The base Impala sedan and coupe were typically equipped with a 230 cubic-inch inline-six, producing a modest 140 horsepower, suitable for daily driving but far from the performance image the Impala nameplate would soon embody. Moving up the ladder, the 327 cubic-inch V8 became a popular option, delivering a respectable 210 to 275 horsepower depending on the specific configuration and carburetion chosen by the factory.
427 Big-Block Dominance
When discussing the peak of 1967 Impala performance, the conversation inevitably centers on the legendary 427 cubic-inch V8. This large-displacement powerhouse was the heart of the Super Sport (SS) package, a model that transformed the Impala into a true muscle car icon. The standard 427 in the SS396 package produced 325 horsepower, mated to a three-speed manual transmission that sent power to the rear wheels with authority. For drivers seeking even more aggression, the optional L79 427 engine utilized a high-lift camshaft and aluminum intake manifold to generate a thrilling 350 horsepower, making the SS396 a formidable force on both the street and the strip.
Performance Handling and Drivetrain
Raw horsepower is only one part of the performance equation, and the 1967 Impala SS396 excelled in translating that power to the pavement. The standard three-speed manual transmission was reliable, but the optional four-speed manual was the preferred choice for enthusiasts who wanted to keep the engine in its optimal power band. Furthermore, the heavy-duty suspension and wider tires available with the SS package ensured that the immense torque produced by the 427 engine was delivered efficiently, minimizing wheel spin and maximizing traction during aggressive acceleration.
The Super Sport Experience
The Super Sport package was more than just a mechanical upgrade; it was a statement of intent. Visually, the 1967 Impala SS featured unique front and rear fascias, a bold hood stripe, and distinctive wheel covers that signaled its performance nature. Inside, the bucket seats and center console reinforced the driver-focused cockpit, making the car feel special regardless of the specific engine option selected. This combination of aggressive styling and substantial power is what has allowed the 1967 Impala SS to maintain its desirability among collectors and enthusiasts decades after production ended.
