Hot Rods Where is the all encompassing nailhead thread?

I cannot find the thread with all the information to ID nailhead engines. I'm trying to identify my 401 and the closest I can get is from the block casting which only narrows it down from 62-66. Didn't it use to be in the tech archives? Help!

 

Bump for the Sunday crowd.

 

http://www.jalopyjournal.com/forum/threads/401-425-nailhead-id-please.361813/


is that it? took about 2 seconds to find it with google, searching for hamb nailhead id. If that's not it, I apologize.

 

Nope, that's not it. Although this thread did not come up on the HAMB search tool either...