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Originally Posted by Dean
Huh? Fasteners do not normally define the torque, the materials you are fastening, or the tolerances in the parts determine the torque. Otherwise you have failures like this, or deform parts in a manner which might contribute to failure.
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Let me restate that; I believe (this is secondhand knowledge, mind you) that the torque values used on the fasteners were recommended by ARP based on the particular stud and the assembly lube used. My guess is that ARP just recommended a stud preload based on its proof strength without doing any analysis of the application (the Ford 302 engine block) itself. It appears that this was a bad idea.
