Yes thats correct, at the crank it would be 13.32....the 6.66 reflects the change at the camshaft based on the tooth count of the cam gear.....having said that; I have found that when you roll out a camshaft using the multi groove lower gear the "4" at the crank does not always come out to be 2 at the cam....I've always attributed that to manufacturers tolerance variations....I'll also go out on a limb here and say that when racing on dirt tracks I didn't find much gain or loss @ 2 degrees....over the years I developed a correlation between intake lobe center placement and the rod ratio ...that seemed to work best for me....fats
