#8 – 1968 Chevrolet Biscayne 427
The all-new 1965 Biscayne was larger and offered an even wider range of powertrain options, including a new, larger 250 cu in inline-six. For the 1966 model, the top engine was the Big-Block 427 cu in V-8, available in a high-powered, high-revving 425 hp version with solid lifters. Although it wasn’t available for the big Chevy’s in 1967, it returned in 1968 for two more model years.