Sorry to hear about your broken timing chain SR. It never, ever used to happen, now it is not all that uncommon.
The 2009/10 5.7 Hemi MDS motors, as well as some of the GMs are experiencing it, from the issues caused by going down to 4 cylinders on a v8.
It usually results in bent valves, eyebrowed pistons etc.
Oh, and overhead cam motors don't have push rods.
