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A garage full of parts came with my cars and I am trying to sort out what is sellable and what is junk. I pulled 4 blocks out and in trying to id them noticed 3 of 4 had what appears deterioration of the metal at the back of the block towards the distributor but inside the block. Is this normal or are these junk? Thanks View attachment 157399
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I would have been wondering the same thing. It amazes me that blocks are made using sand casting molds. I’ve seen the ”how it’s made videos” and know it’s been done this way for decades. It never would have occurred to me, but then I am still in awe of vinyl records (some of you may remember those) and the quality of sound picked up by a needle.
 
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