Thread: 396/400 differences?
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12-20-2003 09:18 PM #1
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- Car Year, Make, Model: 72 Chevy Chevelle
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396/400 differences?
Why is a 396 a BB. But a 400 is a SB?
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01-24-2004 01:18 PM #2
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- Car Year, Make, Model: 86 GMC Sierra Classic
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396 BB is a big block about 125 pound heavier and bigger.
4.096" Bore x 3.76" stroke
can be bored to 4.196 (That I know of) and should be able to fit a 4" stroke crank for a 454. (442.5ci BB)
400SB is lighter, but more likely to over heat.
4.125" B x 3.75" stroke.
can be bored to 4.165" x 3.75" stroke. (409ci SB)
you can rebore a 400SB 3 times 020,030,040
you can rebore a 396BB 6 times 020, 030, 040, 060, 070, 100had a rebuilt 355SB chevy
it lasted 42,000km
Got another rebuilt 355SB
it lasted 62km.
I still have not had a powerful engine.
slowly building a quicker truck
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