[Danr55]

I don't know much about Roush motors per se. I did sit around last nite and listen to two guys arguing about how the motor was marked on the valve covers. "427-XXXX-468" One guy was saying that the marking represented a 427 block stroked to 468 while the other guy argued that the 468 identified the build series and that Roush would provide all of the information based on that number. Does anyone know for sure which guy, if either of them, is right?