Re: 427/425 Biscayne?
From what I read, Chevy got nervous about handing out the HP in 1967. One late 1966 magazine article said that the 375 HP 396 was not available in the 67 Chevelle and the BB was not available in the 67 Camaro. Chevy changed their mind and made the 375 HP Camaro and Chevelle but info was not on some of the 1967 dealer listings. There may have been some 425 Passenger cars that escaped from the factory but it would be a small number.
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