Best Answer

The bore and stroke of a 427 is 4.25 x 3.76.

The formula for the area of a cylinder is pi times the radius squared times the stroke of the crank times the number of cylinders.

So, 4.25/2=2.125*2.125*3.14159*3.76*8=427.

If the cylinders are bored .030" oversize, then: 4.28/2=2.14*2.14*3.14159*3.76*8=433

Q: What is a Chevy 427 engine bored 30 over called?

Write your answer...

Submit

Still have questions?

Related questions

332

355

A 262 bored 30 over.

A 427 bored .60 over is 438.8572417 or basically a 439.

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.

357

333

A 289 bored .030 over.

its called nothing because you wouldn't have a ENGINE left if you bored it 4" over

A 350 starts out with a 4.000" bore and a 3.48" crankshaft stroke which really only gives you 349.8 cubic inches. (Chevy rounded it up to 350) Your engine which has the same stroke of 3.48 but now is bored .030" over (making the cylinder bored size now 4.030) total size of 355.1 cubic inches or just a 355.

In the mid 300 ish Hp

355 is a non stroked just bored 4.030 over 383 on the other hand put a 3.75 stroker crank and bored honed so i would pick 383 . 355 is bored not stroked clearence for stroker crankbest engine would say is 383