The second number in the code is always the manufacturing �Year.� For the example above C5ZZ-2140-CR, the manufacturing year would be 1965. For instance, if the casting number is C5ZZ-2140-CR, the decade number is ∼� or 1960s. In the 1960s, Ford started using the numbering structure with the first letter being ∼.� In 1970s, it changed to ∽� and so on. It remained in production till the mid 1990s.
A Ford 302 engine can trace its roots to 1962 when it was first introduced in a Ford Fairlane. Ford casting numbers always start with a letter for ∽ecade,� according to. Majority of casting numbers consist of nine digits which are broken into three groups. Understanding Ford�s casting numbers is simple, once you gain a basic understanding of numbering structure. These numbers tell you when the part was designed, which department designed it and what it was originally designed for. Casting numbers are basically part numbers or characters that provide information about parts of a Ford 302 engine block.