C6 Vacuum Question
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Freshman User
Joined: Jul 2003
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C6 Vacuum Question
I have a 75 F-100, 360, with a C-6. I just had the 360 rebuilt, dropped it in, and now am connecting the vacuum hoses. I have 2 lines coming up from the transmission that come up behind the engine in the same place (in addition to the two cooling lines). I don't know much about transmissions. One of these should be the modulator, what is the other one?
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Joined: May 2003
Posts: 1,525
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C6 Vacuum Question
You may have a dual area modulator. Manifold vacumn to the end port and spark vacumn to the port nearest the transmission housing. You might consider replacing the modulator with a single area type and only hook up manifold vacumn.
