Chevrolet has replaced last year's top-of-the-line 396-cu. in. engine with a 427. According to the factory, horsepower remains unchanged at 425, but torque has gone up from 415 lbs/ft. at 4000 ...

Winning production car races was easy, and Chevy unveiled a real ... "porcupine" head engine appeared in 1965, followed by the 427 cu. in. V-8 in 1966. A year ago, it looked as if the Mako ...