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General Motors 7.4L Marine Engine 1973-90
GM 7.4 / 454 Reverse rotation rotation, Mark IV, 2 pc rear seal, flat tappet, 10 bolt front cover, round intake port. 2 bolt main. Use DM25 for Std rotation
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Description
GM 7.4 / 454 Reverse rotation rotation, Mark IV, 2 pc rear seal, flat tappet, 10 bolt front cover, round intake port. 2 bolt main. Use DM25 for Std rotation
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