Hi Christian,

The reason ARP failures probably happen is shown in Lurch1977's post:
"For the record I torqued the bolts to 66psi and then another 90 degree turn"

I am stunned someone ( or some shop) would know more that ARP regarding the torque
procedure for the head studs. 66 ft. lbs. ( I assume - what has psi got to do with anything?) and then another 90 degrees - this is insane!!! That ARP stud is now garbage.

I guess it would be best to suggest standard Ford stretch bolts for the masses.

I am still quite stunned and now speachless.