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Wondering about cu. in. in LSX Block

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Old Jul 18, 2007 | 03:15 AM
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Default Wondering about cu. in. in LSX Block

I am putting together a LSX over the fall and winter. I am going to bore it to 4.185 and use a 4.00 stroke. Can somebody tell me the cu. in. i am looking at? Dont know the equation. Thanks
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Old Jul 18, 2007 | 06:09 AM
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440 cubes.
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Old Jul 18, 2007 | 07:08 AM
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http://www.csgnetwork.com/cubicinchdispcalc.html yay for google search
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Old Jul 18, 2007 | 08:26 AM
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You could also go with a 4.125 stroke and come up with a 454 for the same money.

D.J.
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Old Jul 19, 2007 | 12:56 AM
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Hey i will think about that. Thanks for the help guys.
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Old Jul 19, 2007 | 04:49 PM
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Originally Posted by 2fast02TA
I am putting together a LSX over the fall and winter. I am going to bore it to 4.185 and use a 4.00 stroke. Can somebody tell me the cu. in. i am looking at? Dont know the equation. Thanks
Formula is simple geometry for volume of a cylinder, then multiply times 8 or number of cylinders. Remember that a radius is 1/2 of a diameter which in this case is your bore diameter (4.185).
So: pi x radius squared x height
.... 3.14 x 1/2 of bore squared x 4" stroke
.... 3.14 x 2.0925 x 2.0925 x 4 = 54.99 then times #of cylinders (8) = 439.95

440 cu inches

Use same formula for any engine configuration (not rotaries!).
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Old Jul 20, 2007 | 01:37 AM
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simple formula is bore squared times .785 times stroke times 8
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