that is the end that goes to the rocker arm, just what did you thread it into anyway? What does the other end look like? I have a brand new NOS rocker arm fitting (with a 30 cent price tag on it) The end you have shown would definitely go into the rocker arm end. The distribution valve could have anything in it as it is just an 1/8" pipe connection at the engine.
Last edited by brokenhead; 03/02/2014 11:49 PM.