Not only is the no need for Lock Tite on rod bolts, its use is counter productive. (If a nut and bolt in a stress cycling environment is not sufficiently stretched it will FAIL with the nut still in place.)

As I wrote above, the failure of that bolt was an obvious fatigue failure--seen hundreds of them over the decades. It was not caused by under torqueing the bolt, but a failure of that bolt from someone else under torquing it (or a material failure). To avoid that fate in the future you need to select high quality bolts (ARP or SPS) and torque them with light oil on the threads to 15 or so pounds. That set up will be reliable.

Jeff