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What cubic inch is a sbc 400 bored 30 over with 350 crank?

To calculate the cubic inch displacement of a small block Chevrolet (SBC) 400 bored .030 over with a 350 crank, we need to know the following information:

- Original SBC 400 displacement: 400 cubic inches

- Bore increase: .030 inches

- Stroke of the 350 crank: 3.48 inches

Using these values, we can calculate the new displacement as follows:

Cubic inch displacement = Original displacement + (Bore increase x 2) x Stroke * Number of cylinders

Cubic inch displacement = 400 + (.030 x 2) x 3.48 * 8

Cubic inch displacement = 400 + 0.06 x 3.48 * 8

Cubic inch displacement = 400 + 0.209 * 8

Cubic inch displacement = 400 + 1.672

Therefore, the cubic inch displacement of a SBC 400 bored .030 over with a 350 crank is approximately 401.67 cubic inches.