Good book on motor/trans rebuild

[Eric Straub <ericst@MICROSOFT.com>]

I have most of the manuals for my spitfire (haynes, shop, diy restoration & 
how to restore spitfire), but I'd like to get a good book on basic 
automobile engine & transmission theory & overhaul. I'm looking for 
something which gives in depth explanation of how they work & what is 
important to get right when disassembly & rebuilding, etc.  Not something 
specific to british or triumph, but more of a higher level "here's how you 
rebuild engines" kind of book.

Has anyone on the list had good experience with a book like this?

Eric.