OEM cylinder head castings - 1977 K10

[Intenseblue]

Can anyone tell me what the stock casting numbers are for a 1977 K10. The traditional lists are of no help. Will likely require someone having a factory 77 engine to check or have checked prior. Thanks.

 

[bucket]

Depends on what engine. If a 350 or 400, they likely would have been an 882 head.