Chevy Big blocks

I'm new to the site. Glad I joined. Just a question. Anybody know how to determine whay engine I might have? It's a big block chevy, 396, with a number on right side of block-10702ED. I haven't found it on any lists. Any feedback would help. It's in a 58 Ford Custom 300 so body style wont help. Thanks, Mickey

 

You can google Chevrolet engine codes. I think it`s a 67 ,325 hp from a Chevelle.Try that ..