i like this, it's a lot easier
http://www.donsautopages.co.nz/enginespecs.htm

By bruce (66.20.225.135) on Thursday, July 22, 2004 - 03:07 pm:

Here is the easiest way:
Take your bore size:
ex: 5"
divide by 2
equals 2.5" then multiple that to itself, 2.5 x 2.5 = 6.25 then multiple that to PIE (3.14) which is 19.625. Next you multiple that to your STROKE
ex: 6" that is 117.75". Lastly, you multiple that to how many cylinders you have
ex: 6 that is 706.5 that is your cubic inches.

(Bore radius)^2 x 3.14(PIE) x Stroke x No. of Cylinders = Cubic inches

By Yellowcivic (148.63.226.211) on Thursday, July 22, 2004 - 02:43 pm:

I've built a stroker and wanted to see if I had the cc sized right. Mine is bored .75mm over and has the 1335 crankshaft. Would that work out to be a 1360CC engine now? Does anyone know?

David