SBC head markings

A while ago, I found a chart on the net with most SBC head markings and casting numbers and what they correspond to. It had drawings showing what the markings look like. I can't seem to find it now.

Anyone has it? it might be helpfull to many hambers.

 

motech i think is the site ....brandon

 

this might help some i think its all the gm casting styles but not 100%..you can check out mortec.com i think for the numbers

 

That's it!

Thanks!