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Original Message
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| RE: And it's not rocket science |
| By Gerry Proctor - 04/22/2003 9:47:51 AM; IP 207.133.188.254 |
The formula for figuring total displacement is BORE times BORE times STROKE times .7854 times number of cylinders: 4.080 (.030 over 390's stock 4.050" bore) x 4.080 = 16.646 x 3.78 (390's stock stroke) = 62.923 x .7854 = 49.420 (this is the displacement of one cylinder) x 8 (the number of cylinders) = 395.360 (the total displaced volume of a .030 over 390 Ford).
If you don't feel like doing the math there are plenty of displacement calculators online that only require you to plug in the variables (bore size, stroke, and number of cylinders). |
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