slant cam guessing game...428 lift?

timing is brand new with the cam install. Matter of fact, there is no chain slop at all when I go back and forth on the rotation. Installed it with a straight edge because I didnt want to do it again....

I could have the TDC off a few degrees because I dont have a proper piston stop. more like a drum stick wedged in there and me running up the piston until it stopped against it in both directions then bisecting the degrees.