Description

The Corvette Stingray Convertible equipped with the 350-cubic-inch small-block V8 was introduced at the dawn of the C3 generation in 1970 and remained the base engine through much of the 1970s. While it may not have carried the badge of the high–output big blocks available at the time, the 350 remained a well-proven, reliable powerplant that balanced everyday drivability with the classic Stingray’s open-air thrills. In 1970, the L48 version of this engine was rated at a hearty 300 horsepower (SAE gross), and although emissions regulations steadily reduced the officially advertised output over the years, it continued to deliver broad torque and a willing character that suited convertible touring as much as spirited back-road runs.

Visually, the C3 Stingray Convertible retained its dramatic “coke-bottle” styling, with flared fenders, a long tapering rear deck, and those unmistakable pop-up headlights. The removable T-top panels that defined many coupes were replaced by a fully power-operated soft top on the convertible, which folded neatly behind the seats to preserve cargo space. Even in base-engine form, the Stingray’s low-slung stance, sweeping body lines, and chrome-trimmed grille projected an aura of performance and elegance. Buyers could choose from a palette of vivid factory colors—ranging from Classic Red to British Green—and often paired them with contrasting interior hues to create a personalized look.

Underneath, the independent suspension front and rear setup combined coil springs all around with unequal-length A-arms in front and a transverse leaf spring in the rear. Front disc brakes were standard, while power steering and power brakes became popular options to help manage the car’s heft and broad street-friendly gearing. The three-speed automatic (Turbo Hydra-Matic 400) was the default transmission for most 350-powered convertibles, valued for its smooth shifts and relaxed highway cruising. A four-speed manual remained available for enthusiasts who wanted a more direct connection to the engine, though its tall first gear meant that quick launches required more clutch slip than the factory manuals used to offer in earlier generations.

Inside, the cockpit balanced driver-focused ergonomics with increasing comfort amenities. Deeply bolstered bucket seats held occupants securely during hard cornering, while a center console housed a gated shifter (for both manual and automatic) and offered storage space for maps or sunglasses. The dash featured large, easy-to-read gauges—speedometer, tachometer, oil pressure, water temperature, and fuel level—all oriented toward the driver. Options such as air conditioning, an AM/FM stereo with eight-track capability, and power windows elevated the convertible’s usability for daily driving or long-distance touring. In later years, tilt steering and upgraded interior trim packages added to the sense of refinement.

By the mid-1970s, advertised horsepower for the 350-cubic-inch engine had dipped into the 200–230 range (SAE net), but in practice many early examples still retained spirited acceleration thanks to conservative rating methods. Real-world ownership showed that a clean, well-tuned Stingray Convertible 350 could still reach freeway speeds briskly and deliver satisfying exhaust note—the hallmark rumble of a small-block V8 under open sky. Today, these convertibles are prized by collectors and enthusiasts who appreciate classic C3 styling combined with the relative simplicity and cost-effectiveness of a 350-powered drivetrain. Well-preserved examples provide an authentic slice of early 1970s Corvette culture: a car that offers open-top freedom, period-correct performance, and the unmistakable presence of an American classic.