Timing Component Alignment Marks: Locations
If the copper links are not visible, mark two links on one end and one link on the other end, and use as timing marks
Make sure that the copper marks on the timing chain are lined up with the corresponding dots on the crankshaft sprockets and the camshaft sprockets.
Make sure that the (A) camshaft sprocket keyway is 90 degrees from the (B) valve cover mounting surface.