400 bored .040 = how many cubic inches?
01-26-2008, 01:44 PM
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Car: 1988 Pontiac Firebird Formula
Engine: 5.7 TPI
Transmission: 700R4
Re: 400 bored .040 = how many cubic inches?
01-26-2008, 01:47 PM
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Re: 400 bored .040 = how many cubic inches?
Don't really need another thread for this... But, here ya go.
01-28-2008, 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.
01-28-2008, 03:36 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
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.
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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