That overhead cam engine was never meant to be nor did it function. The whole point was to make Nascar believe that if they allowed Ford's SOHC motor to compete then Chrysler would develop and produce their version. In actual fact, the cams in this motor were driven by an electric motor when they brought the Nascar officials in to see it. And they never let them get very close or they would have noticed that it was a pretty crude "prototype". The ploy worked.