No, i had no idea of that spec or what its for. .139" is what i just measured with cam in at 106.75 I'm using the pro gear 9 way timing chain set and its a bit confusing with this cam. I set it to straight up dot to dot and get 106.75 with a 108 lobe sep cam. If ya set it at 2R i get 108.25. I don't get it. I now have the head off ,so i can get more accurate measures using a bridge and a lifter indicator tool that slides into the lifter bore. The cam measures .430 lobe lift dead nuts, so my indicators are accurate.
If ya want to get picky, i get 65.25+148.25=106.75. I checked the opening and closing at .050 numbers and get 25*@.050 lift and 58*@ .050 before close. Cam card says 30.5 open and 58.5 close. I don't get it. I have installed and degree'd a couple dozen cams or so and never had an issue like this cam.