engine knocking?

I have a strange knock also, it comes from the drivers side also....
I dont think my car overheated either, i drove it normally and it did it. Its been doing more lately... I have an AOD so i dont know about the 2nd gear... Does your knock start going fast if you romp on it??
Like mine will knock really fast, not with the engine RPM...

I've been told it may be the timing chain...