Bulletproof250 Posted November 15, 2022 Author Share Posted November 15, 2022 If it is leaking vacuum there, then plug it, if not, leave it alone. Ford went from a piston choke break, to an air horn diaphragm (the slot was it's vacuum passage) to an external diaphragm, which is what yours has. As I said, if there is no vacuum on it, don't worry. Ford like most makes a basic casting and some holes are never drilled through, just the pilot in the casting remains. If it goes to the outside air, bit it's mating portion is not there or not completed, ignore it. That gasket in the first picture is either (a) from a very cheap kit or (b) poorly made or © has been modified. Perfect answers, and information, Bill and Gary Thanks again! I'll try and remember to post my creativity in an update Link to comment Share on other sites More sharing options...
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