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Dan68 -> 455 WM block (3/28/2007 9:31:49 PM)
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My 1968 GTO has a 1972 WM code 455 cu.in block. All my research indicated this should have 4 bolt mains.and came from a 1972 Trans-Am. I am in the process replacing the rear seal, and when I removed the pan was surprised to see 2 bolt mains any answers to this question would be appreciated. Dan
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