508 or 509 Purple Shaft cam

I've profiled a few MP cams. None of them were what the cam card says they are. My ol' 284* adv / 241*@.050 / .484 lift PurpleShaft actually measures 290* adv / [email protected] / .480 lift. There are much better cams out there these days. If you just gotta have the "509 cam" get the Comp Cams version.