Timing chain slipped at 140k miles, bent 3 valves & cracked a piston. Was burning 1 quart of oil every 1.5k miles. For this reason I had to put in another engine (runs great now).
Car was recalled a few years ago for power steering pump problems, did not know this until recently. Never had any problems with it anyways.
Ouch.. that almost happened to me..
Usually when your 5.0 is loosing power it means that your timing chain is stretching.. In my T-bird it stretched so far it was grinding a groove in the cover.