I sent an inquiry to Ford asking for the official definition of FE, reply below:
From:
crcfmc@ford.com
Subject: Ford Motor Company
Date: November 14, 2008 9:19:23 AM EST
We have escalated your inquiry to our Research Department. Please be advised that FE stands for Ford Edsel and they were called Y blocks as well. If you look at the block you will notice that it was shaped like a Y.
Please feel free to contact the Ford Customer Relationship Center for additional inquiries. We can be contacted toll free at 1-800-392-3673, Monday through Friday between the hours of 8 am and 5 pm, local time. Hearing impaired callers with access to a TDD may reach us by calling 1-800-232-5952.
Sincerely,
Marites
Customer Relationship Center
Ford Motor Company
For online support visit us at:
www.customersaskford.com which contains answers to frequently asked questions and links to other key product and service information.