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Reply to "Ford 400 FMX Block - D1AE-6015-A2C - All original"

All of the 351M/400 blocks were cast in one of three foundries, either the Cleveland Foundry, the Dearborn Iron Foundry (D1AE casting code only), or the Michigan Casting Center (the earliest blocks cast in the Michigan Casting Center had D3AE casting codes). Those cast in the Michigan Casting Center prior to "late" 1977 are the ones known to have a problem with cracking in the water jacket in the tappet valley just above the tappet bores. The block being sold here has a D1AE casting code, it was cast in either the Cleveland Foundry or the Dearborn Iron Foundry, and is not a suspect block.
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