For sale at auction: Lot #389.1 - 1966 big block Corvette. A matching numbers 427/390hp 4-speed convertible, along with documentation back to 1971, this true big block comes with its matching drivetrain, rare and unusual bright blue interior and white convertible top. Correct hubcaps and period correct gold line tires. Also frame-off photo documentation. Engine block casting #3869942, Engine block casting date I 21 5, Engine pad stamping T0930IL/6102909, untouched with factory broach marks.