Using a laser level to align the timing marks on the sprockets I got 10.5' after TDC. Using a flat edge on the lifters to check overlap I got 7' after TDC. TDC was found using a degree wheel and piston stop.
Have You checked the lifters when seated on the base circles to see if they're perfectly level to begin with? If not, this method is not OK, even if Your goal is to time by =OL valve lift.
And please share which camshaft You are working with.
