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That would be called a Chevy 307 bored .40 over.

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Wiki User

16y ago
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AnswerBot

6mo ago

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.

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Wiki User

11y ago

a bored over 305

The displacement is now 312.423

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Anonymous

Lvl 1
4y ago

Paperweight

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Q: What is a Chevy 305 engine bored 040 over called?
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