A 289 bored .030 over.
its called nothing because you wouldn't have a ENGINE left if you bored it 4" over
A 262 bored 30 over.
A 427 bored .60 over is 438.8572417 or basically a 439.
332
355
A Chevy 305 engine bored .040 over would typically be referred to as having a +.040 bore, indicating the increase in bore diameter from the standard size. This modification can increase the engine's displacement and potentially enhance its performance.
The bore diameter would be 4.195 and the stroke is 4.218. using the formula pi times the radius squared: 4.195/2=2.0975*2.0975=4.3995*3.14159*8*4.218=466.4 So, a 455 bored 40 over would be a 467
The bore adds about 10 cu. inches to make it a 337
332
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.
Sounds like a 343 to me. But for parts its a 283 bored 60 over