Sponsored Links (Register now to hide all advertisements)
There is always a hyphen after the three digit prefix. FoMoCo did have a code built into the numbers following the beginning prefix. When you look at the first page of a chassis parts book, the beginning code started with the wheel, hub, & drum grouping in the 1000 range of four digit numbers. A person needs the parts catalogs to realize what all groupings there are in the early Ford numbering sequence. FoMoCo changed this system beginning in the late 40s but they still used the same sequence groupings. They just added to the prefixes to denote the year and model codes.