Hi Everyone; I recently put up a post about junk in your cooling passages in your block and heads, and that could be a cause of overheating. The guys at the foundry not being perfect etc. There wasn't any feedback on the post, so I deleted it. Well I am porting out a set of 350 Heads, and this is what I found in the cooling passage in One head. Before any wise ass chips in, the penny is there for reference. PONCH
I would say casting rods but they look like plastic. I've found plenty leftover casting rods in every brand heads and blocks.
