Are these correct 842 heads?
 

ebay listing http://cgi.ebay.com/ebaymotors/GM-NOS-Al...=item2c534af4d0

is that where they dated original heads?? and did they make theses heads that early?

Re: Are these correct 842 heads?
 

Those are over the counter heads. I have been trying to figure out how the casting dates work on those.

Re: Are these correct 842 heads?
 

Here is another set of these OTC heads.

http://i300.photobucket.com/albums/n...G0HyBLR682.jpg

This is an original 842 casting date.

http://i300.photobucket.com/albums/n...tingDate-1.jpg