Quote:
Originally Posted by Railcarmover
http://www.fordgarage.com/pages/diamondblock.htm
It appears diamond castings were assembled at the Rouge,but cast elsewhere.Mr Falter mentions Highland Park.Would be interesting to know the furnace that made the iron,no doubt the iron design was Ford spec..The Rouge heats were consistent,volume heats from a furnace in constant operation.Did the furnace that produced the diamond block heats have the same consistency? who knows..
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I think you need to go back and read what Vince stated in his article.
"Original documentation which explains specifically why the diamond symbol was added to the block, or what it signifies has not yet come to light. If found, it may indicate the casting supplier or location."