It is about 446 cid
A Chevy 396 engine bored 0.060 over is commonly referred to as a 402 cubic inch engine. This designation comes from the fact that boring the engine increases its displacement, as the original 396 cubic inch engine is enlarged by the increased cylinder diameter. This modification can enhance performance by allowing for greater airflow and fuel combustion.
If my math is correct , just over 311 cubic inches ( using a 3.875 inch bore and 3.250 inch stroke bored out 30 thousand )
If my math is correct : using a 4 inch bore and a 3.48 inch stroke , with the cylinders bored .060 , just over ( 360 cubic inches )
365 ci
377
A 262 bored 30 over.
An Oldsmobile 455 engine that is bored over .060 inches is commonly referred to as a "467 cubic inch" engine. This modification increases the engine's displacement, which can enhance performance and power output. The term "bored over" indicates that the cylinder bores have been enlarged to accommodate larger pistons, thus increasing the engine's overall capacity.
If my math is correct , almost 293 cubic inches ( using a 4 inch bore that is bored out .030 and a 2.87 inch stroke )
If my math is correct , just over 362 cubic inches ( 4 inch bore x 3.5 inch stroke , bored .060 inches )
If my math is correct , almost 410 cubic inches ( using a 4 inch bore and a 4 inch stroke that has been bored out .040 )
A 455 bored 30 over refers to a 455 cubic inch engine that has been bored out by 30 thousandths of an inch. This process increases the engine's displacement slightly, potentially enhancing performance. Typically, such modifications are aimed at improving power and efficiency in high-performance applications. This term is commonly used in the context of automotive engine modifications, particularly in classic or muscle cars.