65 Barracuda 187 code!!!

duey_roc said
Does anyone know what type of hard stuff is on the side of my motor? I pulled the oil pan off, and this was lying next to the bolts on the side. It's crushable too. Is it carbon buildup?
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can't tell by the pic but could be bits of valve seals or like you you said pieces of carbon broken off, even old bits of gasket material or sealer.