The Chevrolet Corvette 427 Coupe 390 HP was part of the second-generation Sting Ray lineup, introduced for the 1966 model year. Unlike the one-year-only split-window of ’63, all C2 coupes from 1964 onward featured a single-piece rear glass, and the 1966 coupe combined that streamlined fastback profile with the potent new 427 cubic-inch big-block V8.
Under the hood, the 390-horsepower version was the L36 option. It used a single Rochester four-barrel carburetor, hydraulic lifters, and a mild camshaft to produce its peak output at around 5,200 rpm. Equally important was its prodigious torque—nearly 460 lb-ft—available low in the rev range. Buyers could choose between a three-speed automatic transmission or the more driver-focused close-ratio four-speed manual.
In terms of performance, the 427/390 coupe was no slouch. With its robust torque and relatively light fiberglass body, it could accelerate from 0 to 60 mph in the mid-five-second range, and top speed approached 140 mph. The chassis carried over the Sting Ray’s independent double-wishbone front suspension and transverse leaf-spring rear setup, with four-wheel coil springs and standard front disc brakes. Optional power steering, power brakes, and side-exhaust pipes allowed buyers to tailor handling and character to their liking.
Styling cues included the pronounced hood bulge needed to clear the high-lift cam and big-block dimensions, as well as side coves without the side vents introduced in later C2 years. Inside, the coupe offered deep-bolstered bucket seats, a twin-cowl dash with full instrumentation, and options such as air conditioning, tinted glass, and a removable hardtop for added all-season usability.
Today, the 1966 Corvette 427 Coupe with the 390-horsepower L36 is prized for its combination of relative rarity, robust performance, and classic mid-’60s design. As the “entry” big-block, it sits between the base 360 HP model and the higher-output 400 HP and 425 HP variants—offering a compelling balance of power, drivability, and collectibility.