Story
The 1962 Bel Air Sport Coupe joined Chevrolet's light, pillarless "bubbletop" body with the division's new 409-cubic-inch big-block. It was not a separate 409 model: buyers started with the Bel Air V8 Sport Coupe, style 16-1637, then selected either the 380-horsepower RPO 580 or dual-quad 409-horsepower RPO 587 engine.
Both engines shared an 11.0:1 compression ratio, solid lifters, forged-steel crankshaft, dual exhaust, and the 409's 4.3125-inch bore and 3.50-inch stroke. RPO 580 used one Carter four-barrel and made its peak torque lower in the rev range. RPO 587 used two Carter four-barrels and carried the headline one-horsepower-per-cubic-inch rating.
The rest of the car remained recognizably full-size Chevrolet. Factory engineering records list three- and four-speed manual paths with the 409, an unequal-arm front suspension, a four-link coil-spring rear suspension, an 8.375-inch semi-floating rear axle, and 11-inch drum brakes. Positraction, deeper axle ratios, power brakes, and a broad range of comfort and appearance equipment could be ordered.
A 409 emblem does not authenticate a car. The VIN and style number can establish a V8 Bel Air Sport Coupe, while original paperwork, engine suffix and date stamps, castings, carburetion, transmission, axle, paint, trim, and component dates must agree to support a specific RPO 580 or RPO 587 claim. The surviving-car gallery is therefore visual context, not proof of any individual car's factory configuration.