Ford 2003 Mustang Workshop Manual page 1542

14. Install the camshaft sprocket, washer and bolt, and hand-tighten the bolt.
15. Tighten the bolts in two stages:
Stage 1: Tighten to 40 Nm (30 lb-ft).
Stage 2: Tighten and additional 90 degrees.
16. Remove the special tool.