3mm Stroker

well i know the +4mm crank makes it a 209cc, so i would think the +3mm crank is prolly somwhere about 206cc mabe, there is a math formula to figure out ur cc's somehere on here, i just cant find it
 
area of a cylinder is (pi)(r^2)h
so with stock bore and r being radius which is 1/2 diameter and h being height or stroke

(3.14159...)(33^2)(60)=205271 cubic millimeters which is 205.271 cc's
 
For around the same price you can hace your jug ported and get more power out of that then you would if you just added a +3 stroker and you will not add any displacment
 
^^ no problem, glad to help^^
Hick's formula is more accurate down to the thousandth of a cc, but the one I provided is great for a quick reference.

I also agree with russel, porting would by far be more gain for the $$ spent and would not increase the displacement.