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1967 Mercury Cyclone 390 FE motor. I have an old Offenhauser Ford FE 390 intake manifold with two fours (aka: dual quad or 4x2 carb setup). It has a "Y" hole in the back of the intake. Is there anything I can use to block this hole off?

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  • Hi and Welcome. Your question is hard to understand - please edit it carefully paying attention to spelling and punctuation.
    – mike65535
    Commented Jan 10, 2019 at 14:54
  • Mike65535 I don't really need to change it up Mike if you were a mechanic in the fifties and the sixties you'd already know what it is there's only two holes in the intake manifold that's a thermostat hole in the blow by hole
    – user44796
    Commented Jan 10, 2019 at 19:34
  • Please improve your question.
    – Solar Mike
    Commented Jan 10, 2019 at 21:40
  • Welcome to Motor Vehicle Maintenance & Repair! Is this the manifold you're talking about? I take it the hole you're talking about is on the unpictured side in this image? Commented Jan 10, 2019 at 22:22

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