Was stuck tight. Tried to loosen it up and broke the thing. The question is, how does one replace this thing without replacing the whole manifold? The next question is, Is this thing really necessary? I ask because it would seem that it is eliminated if one were to install some Fenton headers or the like. By the way the vehicle in question is a '61 Apache 10 with 235 cid all stock, 3 on tree.
