Thread: 1971 HO 455 4 bolt block std bore
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Old 12-29-2021, 06:03 PM
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dld dld is offline
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They may not align . Edges off and or the hone lines won't match . But as with my block, was drilled and tapped but was a two bolt . My block was a YC also. See date code on block
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Last edited by dld; 12-29-2021 at 06:24 PM.