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a Ford 400 had a 4 inch bore and 4 inch stroke. Simplest math motor EVER!! Given 4" bore x 4" stroke x pi (3.14) x 8 cylinders = 402 cubic inches. Bore this thing out .060 and you get: 4.060 x 4 x 3.14 x 8 = 408 cubic inches.

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A 400 small block engine that is 0.060 over means the cylinders have been bored out to increase their size. The original 400 small block engine has a standard displacement of 400 cubic inches, but when bored 0.060 over, the engine's cubic inch size would increase to approximately 406 cubic inches.

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10mo ago
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Q: 400 small block 060 over is how many cubic inches?
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