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Boring Block

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Valley Head bored this 401ci V-8 0.030 over—from a standard of 4.165 inches to 4.195 (bringing this AMC to 406 ci, keeping the same stroke). If you’d like to figure out the final displacement of your engine, it can be done using this equation: bore X bore X stroke X # cylinders X 0.7854 = cubic displacement

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