For the 1966 Corvette, it was about small steps in cosmetic refinements again, but big steps in Cubic Inches. The production version of the 427 makes its debut in the form of the big block V-8 with either the 390 bhp or the 425 bhp version. While the 427 didn’t have a rated horsepower higher than the previous years 396, the 66 Big Block brought a lot more torque to the table (460 pound/feet vs. 415). The 327s were still in demand, though in 1966 only two were offered (the 250 hp base engine used from 63-65 was dropped from the line up and the “new” base engine was now rated at 300hp.
The 1966 Corvettes received an emblem in the corner of the hood for 1966. Head rests were a new option. 1966 would prove another record-busting year, with volume rising to 27,720 units, up some 4200 over 1965’s sales.