1966 Mustang vacuum line - Ford Mustang Forums
 
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post #1 of 9 (permalink) Old 05-31-2012 Thread Starter
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1966 Mustang vacuum line

Hey guys, can somebody post a picture and a diagram of how the transmission vacuum line gets routed, especially at the intake manifold? I just received a new one from CJ Pony Parts, part # MUM1004. But no matter what way I try I cannot determine how it's supposed to be routed. I can't go off the original because that is 3 6" bits of metal all connected by hoses. Thanks guys, Michael.

1966 Mustang Sprint 200 "Oliver"... factory fog lamps, factory rally pac, off the road for restoration.

2005 Mustang 4.0 litre... Airaid CAI, Honeycomb taillamp panel, more mods to follow.
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post #2 of 9 (permalink) Old 06-01-2012
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Why don't you drop in a V8?

Seriously, I can't seem to locate a diagram at this moment, but the vacuum source must be from the intake manifold or in other words, so that there is vacuum going to the transmission's modulator valve at all times. This includes when the throttle is closed and the engine is at idle.

You don't want the "Timed or Ported" source like the vacuum source that some people connect to their distributor vacuum advance canister. This source provides no vacuum when the throttle is closed or when the engine is at idle.
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post #3 of 9 (permalink) Old 06-01-2012 Thread Starter
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I know that. My transmission has been connected to the intake manifold. It's just I wanted the proper line, not some hacked together cheap garbage, that looked and functioned badly. The problem is, from what I can find. There is supposed to be a junction or 90* fitting screwed into the intake manifold with an opening pointing towards the front of the car for transmission vacuum line. I can't find a fitting to save my life.

1966 Mustang Sprint 200 "Oliver"... factory fog lamps, factory rally pac, off the road for restoration.

2005 Mustang 4.0 litre... Airaid CAI, Honeycomb taillamp panel, more mods to follow.
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post #4 of 9 (permalink) Old 06-01-2012
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here's how it looks in my '66 sprint. the trans vac line is blue.
not sure if this is correct, but it's how it looked when i got it

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post #5 of 9 (permalink) Old 06-01-2012 Thread Starter
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That looks like the fitting I need. The problem is finding one. I think the male end (screws into intake manifold) is 1/4 NPT, and the female (the opening the vacuum line screws into) is 3/8 NPT.

1966 Mustang Sprint 200 "Oliver"... factory fog lamps, factory rally pac, off the road for restoration.

2005 Mustang 4.0 litre... Airaid CAI, Honeycomb taillamp panel, more mods to follow.
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post #6 of 9 (permalink) Old 06-01-2012
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If you're not concerned about originality, you can probably find what you need at Home Depot.

Joe
'65 Coupe, 302, Autolite 4100, C4, 2.80
'72 Grande, 351C, Motorcraft 2100, FMX, 2.75
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post #7 of 9 (permalink) Old 06-03-2012
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My 66 has a hard line that runs from the intake down to the trans. it has a short piece of hose to connect to the modulator. The line comes straight out of the intake and then turns to the rear. I'll PM you and give my e-mail addy so I can send a few pics of the routing.
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post #8 of 9 (permalink) Old 06-03-2012 Thread Starter
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I've got the new line. It's like va176jb's. I just need to find a 90* fitting that I can point towards the front of the car. I don't know what style the original line was (I know there were 2 or 3). Like I said, the one on my car is just random bits of old rubber hose and kinked metal tubing stuck together (sometimes I hate the previous owner).

1966 Mustang Sprint 200 "Oliver"... factory fog lamps, factory rally pac, off the road for restoration.

2005 Mustang 4.0 litre... Airaid CAI, Honeycomb taillamp panel, more mods to follow.
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post #9 of 9 (permalink) Old 06-05-2012 Thread Starter
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Well, I got an original fitting right off a 1966 Mustang's 200ci six. So once the car has cooled down I'll finish installing the new line.

1966 Mustang Sprint 200 "Oliver"... factory fog lamps, factory rally pac, off the road for restoration.

2005 Mustang 4.0 litre... Airaid CAI, Honeycomb taillamp panel, more mods to follow.
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