Hello all from Fort Wayne. Enjoy reading the forums and seeing what is for sale. Figured was time to sign up and be a contributor. Thanks for adding me.
Harley engine design. (IIRC) Pan Head 1948-1966, Knuckle Head 1936-1947. Shovel Head 1967-1983ish. Block Head, Fat Head, etc. Way back was the Flat-Head.