Please ID my heads!!
 

looking to find what year these heads are and whatever else i can find on them such as cc chambers and port flow.

302 heads. code is 1j29 or ij29 not sure if its a one or an i.
anyone know where i can look this up? thanks.

What did they come out of? Those numbers dont match with anything out of the the book I've got. But, then it only covers the vintage stuff. 60-73