Not Ranked
I've heard references to the metal content as well so I did a bit of searching tonight....I found this.
A quote from the Team Dark Horse website....
"I started with a block I found for $100 in a Tennessee wrecking yard, a Mexican-made piece from a 1971 Ford pickup with thicker webbing of the main journal and sidewalls. Not a Boss block by any means, but stronger than a standard unit at a fraction of the cost. (Despite the folklore that the Mexican blocks are made of a stronger, higher nickel-content cast iron, I was told by Ford Motorsports engineer Rod Kack that they're made of the same
metal as American or Canadian blocks, just more of it in some useful places.)"
I don't know about the extra webbing or whether the 351 is included in this lot, but this might answer the question of the metal content...
Bill
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