Aluminum 074 big block heads

[big gear head]

https://bham.craigslist.org/pts/d/1970-big-block-chevy-aluminum/6427387986.html
And 427 block. Is this one of the older blocks?

[scuncio]

Looks like those heads have a story to tell....

https://images.craigslist.org/00m0m_d5iLdsN1pK_1200x900.jpg

[big gear head]

I was trying to figure out what that shape is. Looks like something got dropped into the intake.

[big gear head]

Looks like a Hilborn fuel injection manifold too.

[olredalert]

----Heads are O-ringed, as well as being pecker tracked!.......Bill S

[SuperNovaSS]

Looks like a valve seat dropped and shattered. Then it got pulled into different cylinders.

Jason

[TimG]

I had that happen on a set of aluminum heads. The valve head got chewed up and nicely dispersed through all eight cylinders.