I searched the Pantera workshop manual, issued by Ford/Lincoln Mercury in July 1973 (called the Technical Information Manual), section 21-22-04 & 21-22-05 and the Pantera Service Highlights manual (an internal Lincoln/Mercury training document). Neither Ford document listed a torque spec for the engine mounts.
In the same spirit of humor offered by Jeff, and being of German ancestry, I can pass-on to you an old mechanic's joke, tighten the bolt until it gets loose again, and then back-off 1/4 turn.
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