Ford 2003 Mustang Workshop Manual page 1448

3. If the copper links are not visible, mark one link on one end and one link on the other end, and
use as timing marks.
4. Install the timing chain guides.
5. Rotate the LH camshaft sprocket until the timing mark is approximately at the 12 o' clock
position. Rotate the RH camshaft timing sprocket until the timing mark is approximately in the
11 o' clock position.
6. CAUTION: Unless otherwise instructed, at no time when the timing chains are