don't know a place on the net right off other than Amer Classic, but there are books that have lists of those codes - the F will be the Flint plant, and as the BE seems to indicate car model and trans combo, the numbers may just be a date code
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics