I found out why the RH valve cover gasket was leaking so bad in the rear. Went to reinstall the VC cover and gasket (thanks for prior post replies!) and something looked and felt weird. Looked a little closer and the prior wrench must have had a problem and stacked 3 nuts on it then tightened the top nut? Only thing I can figure is that something happened to the threads or they dropped the original nut? Anyway, the top nut in the picture tightens. The lower 2 spin free. I looked at my manual and there's really no guidance here, just says tighten to specs.I can't leave it this way, the nuts hit the VC, holding the sealing surface off the head, hence the pouring oil leak. None of this addressed in my 56 service manual. 

My question is, is this just a regular stud? Double nut it and turn it out, find another stud with good threads, and replace? Find a stock type nut? The other three studs have an umbrella looking nut, and only 1 each. Need opinions, guys! Also, I don't know how to torque a stud...Edit: I guess just a deep well socket. DUH




1956 F600 272
2005 F250 5.4