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Old 10-18-2013, 10:58 PM   #1
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6.2 or 376 or 375 Cubic Inches?

I know liters are rounded up. Cubic Inches as well. Chevy says 376 cubic inches, but check my math. With a 4.06 inch bore and 3.62 inch stroke that should yield a 374.73 cubic inch engine right. Should be a 375. (volume of a cylinder is pie r squared times height). 3.14 x 2.03(2) x 3.62 x 8= 374.73. Why call it a 376?
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Old 10-18-2013, 10:59 PM   #2
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376 CID
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Old 10-18-2013, 11:18 PM   #3
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I think you are missing the volume of the combustion chamber in your calculation.
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Old 10-18-2013, 11:27 PM   #4
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Okay, makes sense then. Good answer. Didn't think about that. 376 it is.
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Old 10-19-2013, 03:21 PM   #5
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Old 10-19-2013, 03:33 PM   #6
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With a 4.06 inch bore and 3.62 inch stroke
Technically it's a 4.065 bore with 3.622 stroke. That comes out to 376.053 cubic inches.
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Old 10-19-2013, 03:42 PM   #7
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To be really precise, its 376.03ci (or 6.162 liters) The calculation is based only on bore and stroke. Combustion chamber volume isn't a factor in the calculation. Your numbers are slightly off because the bore and stroke figures are themselves rounded off, as is your figure for pi (3.1415926....)
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Old 10-19-2013, 04:14 PM   #8
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SS376 sounds cool to me.
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Old 10-20-2013, 10:16 AM   #9
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Quote:
Originally Posted by Edzo View Post
Okay, makes sense then. Good answer. Didn't think about that. 376 it is.
No, doesn't make sense. Bad answer.

Quote:
Originally Posted by EFI View Post
Technically it's a 4.065 bore with 3.622 stroke. That comes out to 376.053 cubic inches.
Correct. Good answer.

Quote:
Originally Posted by fielderLS3 View Post
To be really precise, its 376.03ci (or 6.162 liters) The calculation is based only on bore and stroke. Combustion chamber volume isn't a factor in the calculation. Your numbers are slightly off because the bore and stroke figures are themselves rounded off, as is your figure for pi (3.1415926....)
Correct. Another good answer.
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Old 10-20-2013, 10:28 AM   #10
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Does it really matter
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Old 10-20-2013, 11:03 AM   #11
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Quote:
Originally Posted by Edzo View Post
I know liters are rounded up. Cubic Inches as well. Chevy says 376 cubic inches, but check my math. With a 4.06 inch bore and 3.62 inch stroke that should yield a 374.73 cubic inch engine right. Should be a 375. (volume of a cylinder is pie r squared times height). 3.14 x 2.03(2) x 3.62 x 8= 374.73. Why call it a 376?
Because Chevy said so.
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Old 10-25-2013, 09:18 PM   #12
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Quote:
Originally Posted by fielderLS3 View Post
To be really precise, its 376.03ci (or 6.162 liters) The calculation is based only on bore and stroke. Combustion chamber volume isn't a factor in the calculation. Your numbers are slightly off because the bore and stroke figures are themselves rounded off, as is your figure for pi (3.1415926....)
Yep, engines are built with thousandth of an inch precision ... calculations about them should be done accordingly.
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Old 10-25-2013, 11:28 PM   #13
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mine is just about wore out. I think it is closer to 377ci....
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Old 10-26-2013, 07:23 AM   #14
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Oh, wait, I thought we were talking about my overbored Buick
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