A bored out variation of the Chevy 396 cubic inch V-8 debuted in 1966 Corvettes and full size Chevys. The Chevy 427 big block could be had with one of two versions, 390 horsepower and 425 horsepower.
1966 Chevrolet Biscayne
Chevrolet installed 15,517 427 cubic inch in its 1966 line. The Chevrolet Corvette received most of these engines but 5143 went into big Chevy's. 1856 went into the Chevy Biscayne and was the engine of choice for those who believed speed was the only luxury worth having.
Chevy 427 Cubic Inch V-8
Engine specification included OHV V-8, 427 CID, 4bbl, 11.0:1 compression ratio, 425 Horsepower @5600 RPM. Performance included 0-60 mph in 5.7 seconds and 14 seconds in the 1/4 mile.