[Mr427]

Spare ribs?

Ford made millions of the FE over its lifetime. In fact, some 5.4 million of them, from what I have been able to surmise.

The ribs you are all talking about are on your blocks, because they were added to the cores, to reinforce the cores themselves and not the blocks that were being cast in them.

Many have wondered at these "reinforcement" ribs on the FE, but they are anything but.

However, they are good for helping apporximate a blocks´ age. In our case, all these blocks with the ribs were made towards the end of the FE´s procuction life cycle at Ford.

Just my two cents.