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The Ford Racing BOSS 351 cylinder block is a 351 cu in, 9.5 in deck-height replacement cast from diesel-grade iron and strengthened in key areas for durability. It maintains Windsor-style dimensions for compatibility with many 302/351 components but requires special length 1/2 in head bolts or recommended head studs. The block is finished for 3.990–3.995 in bore and serves as a foundation for 9.5 in deck projects.
Ford Racing BOSS 351 Cylinder Block 9.5inch Deck
