Back in 1969, the Nova SS could be purchased from any Chevrolet dealer with the standard 350ci small-block V8 or optional 396ci big-block. But some enthusiasts felt there was no replacement for displacement, and wanted more. The iconic Yenko Nova came with a 427ci V8, but those very special cars were rare back then, and they're far rarer today. This led some Nova buyers to follow in the Yenko's footsteps and install 427 big-blocks into their own cars.