Story
The 1961 Chevrolet Impala Super Sport began as a midyear factory equipment package, not as a 409-only model. RPO 240 joined Chevrolet's full-size Impala with a required performance W-series V8, heavier suspension, chassis reinforcement, power steering, power drum brakes with sintered-metallic linings, black 14x5 wheels, narrow-whitewall tires, spinner covers, a 7,000-rpm tachometer, a passenger grab bar, and dedicated identification.
The engine story has two branches. High-performance 348s supplied most of the documented configurations, with factory choices reaching 350 gross horsepower. Chevrolet's new 409 arrived late in the year with one four-barrel, 11.25:1 compression, 360 gross horsepower, and 409 lb-ft of torque. Industry production statistics report 453 Super Sports, including 142 with the 409, but do not split those cars by body style, transmission, or assembly plant.
That distinction matters because the trim has been reproduced for decades. A convincing car needs more than scripts, spinner covers, a tachometer, or even a correct-looking W-engine. Original paperwork must identify RPO 240, while the VIN and Fisher tag, engine assembly and castings, carburetion, transmission, axle, brakes, suspension, paint, trim, and component dates must tell one consistent story.
The photographs here show the 1961 Impala and surviving Super Sport appearance. They do not authenticate any pictured car's factory engine or option order.