dynamic comp

I belieave that I put the wrong figures in to the calculator,
in this link http://kb-silvolite.com/calc.php?action=comp

I can´t find the accurate number to put in "the intake closing time" column.
It´s a mopar purple 284/484 108* cam. Probably me who can´t read a cam card.

The rest of the build is
383 +.040 B block
linehoned + square decked.
piston to deckheight .020
KB dished pistons 5.00 cc
Steel chim headgasket .020
915 heads shaved for straightness
Above mentioned camshaft
Eagle "stock" rods