Q: What is a ford 289 engine bored out .030 called?

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332

A 262 bored 30 over.

A ford 302/5.0 will be 306ci if bored .030 (4.030" bore)

Yes. That would be a 350 bored .030" oversize.

That would be an engine whose cylinders have been bored .030" oversize and fitted with new oversize pistons. New displacement would be 355 ci.

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.

A 305 had a 3.75 bore with 3.48 stroke. Adding .030 to the bore and using the formula pi times the radius squared times the stroke times the number of cylinders equals 312.

Each cylinder has been re-bored to a diameter .030" larger than it came from the factory. .030 oversize isn't much. It's done to correct slight cylinder tapering and to put the engine back into condition that it will last. It really isn't enough size difference to produce noticably more horsepower. Note that when the cylinder is bored .030 over, you'll also need pistons and rings that are manufactured to that size.

460

yes

292.8658So its a 293.

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 )