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400 bored .040 = how many cubic inches?

   
Old Jan 26, 2008 | 01:30 PM
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bmfIROC-Z's Avatar
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400 bored .040 = how many cubic inches?
just wondering about how many cubic inches a 400 small block bored .040 would be? thanks in advance.
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Old Jan 26, 2008 | 01:44 PM
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Re: 400 bored .040 = how many cubic inches?
Originally Posted by bmfIROC-Z
just wondering about how many cubic inches a 400 small block bored .040 would be? thanks in advance.
Don't really need another thread for this... But, here ya go.
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Old Jan 26, 2008 | 01:47 PM
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Re: 400 bored .040 = how many cubic inches?
Originally Posted by ploegi
Don't really need another thread for this... But, here ya go.
o well you'll have that ,thanks anyway
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Old Jan 26, 2008 | 02:00 PM
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Re: 400 bored .040 = how many cubic inches?
Pi x (Bore/2)squared x stroke x number of cylinders
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Old Jan 26, 2008 | 02:03 PM
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Re: 400 bored .040 = how many cubic inches?
its 408 with standard 400 crank
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Old Jan 28, 2008 | 01:47 PM
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Re: 400 bored .040 = how many cubic inches?
Mathematically correct it should be called a 409. The common designation of408 probably gained popularity to keep from confusing it with the old 409 engines.

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Old Jan 28, 2008 | 03:36 PM
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I doubt it's anything that sophisticated.

A 383 is about the only SBC that is commonly designated by its .030"-overbore displacement. And that's because it's a custom engine, not a standard GM configuration.
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