Interesting Facts About Corvettes #39 – The Big Block Begins In 1965, Big-Block V8 engines debuted for the Corvette. Two forms of these V-8 engines were available on the 1966 model, the 390 hp and 425 bhp. Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50