XE285HL in 360

Just after some timing numbers for a XE285HL Comp Cams hydraulic flat tappet cam for my 360 that I am currently building. I am using the KB Pistons calculator to work out compression, it asks for the Intake Closing Point (degrees) ABDC @ 0.050 lift plus 15 degrees, I have the cam specs but not sure if the figure is at .050" ABDC ?? Any help or full timing figures would be helpful. I have attached a couple pics of cam info/specs and compression calculator with my measurements, as you will see using these cam specs from Comp Cams gives an incredibly low dynamic compression. .

Any help appreciated.

Comp -.010.png

Comp Cams XE20-228-4HL.png