So ive never really taken the time to full understand how and why my 4l60 does what it does and Id really like to. Is there a book on the market or a good site which goes pretty in depth to the working of this particular transmission?

 

Check aldata you can get a subscription for a particular car type there cheap around 20 dollars for a year and the info is extensive

 

Im looking more an actual explanation of what every part does and why it does it than a disassembly manual.

 

I don't know if this is what your looking for or not, but here you go

http://www.familycar.com/transmission.htm

 

I personally think that the GM hydramatic book is the best book I have read for this type of info. They make these books for all transmissions used in their cars and they are great books. Vince

 

I agree with Vince, but the only true way to learn is from experience. Rebuild a few or work at a shop that does. Then you can voice your opinion with confidence.