Following the Corvette Sting Ray’s October 1962 debut, chief engineer Zora Arkus-Duntov rapidly elevated the model’s performance profile through a continuous rollout of competition-oriented options. Impressive even in base form, the second-generation Corvette offered a broad range of powertrains, introduced a fully independent rear suspension, and quickly established itself as a consistent front-runner in international competition.
The defining leap came in 1965 with Chevrolet’s Mark IV 396-cu-in big-block V-8. Developed under Dick Keinath and rooted in the outlawed Z-11 “Mystery Motor” 427, the new engine gave the Corvette both the output and development potential to take on Shelby’s Cobra at home and Europe’s elite abroad. For 1966, displacement grew to 427 cu in, with the solid-lifter L72 officially rated at 425 hp—downrated from its true 450-hp capability.
Total 1966 production reached 27,720 cars, split between 9,958 coupes and 17,762 convertibles. Just 5,258 were fitted with the L72, a $312.85 option. Two of those 5,258 Corvettes that came with the L72 mill for the 1966 model year are slated to cross the block at Bonhams Cars’ Scottsdale auction on January 23.
1966 Chevrolet Corvette 427/425 HP Roadster
Completed at GM’s St. Louis Corvette plant on November 8, 1965, this example was originally sold by Z. Frank Chevrolet in Chicago. Ordered with the L72 427 big-block and a three-pedal setup, it was initially finished in Silver over a silver vinyl interior. Later converted to roadster specification, it now wears Black over Black following an older restoration that still presents well. Long resident in California, the car is equipped with side-mount exhaust, a close-ratio four-speed manual, Soft Ray tinted windshield, Positraction rear end, aluminum knock-off wheels, AM/FM radio, and transistor ignition.
1966 Chevrolet Corvette L72 427/425 HP Convertible
Built on June 29, 1966, this Corvette retains its original, numbers-matching big-block engine, with correct stamping and assembly dates consistent with the chassis. Highly optioned, it features a matching hardtop, teakwood steering wheel, and aluminum knock-off wheels. Restored in the early 2000s and sparingly driven since, it remains in excellent condition. Finished in factory-correct Nassau Blue with a white leather interior, the restoration was completed to a high standard and continues to show exceptionally well, though the trim tag is believed to be a later reproduction.
Offering exceptional performance, aggressive styling, and strong restorations, both 1966 Corvette Sting Rays are well suited for continued display, club use, and spirited driving. Carefully specified and fully sorted, each represents a compelling and turnkey example of Chevrolet’s big-block flagship.
