ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1967 Mustang => Topic started by: Tiny on April 27, 2023, 11:55:59 PM
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Hi all, trying to restore my GT 390 Coupe to original. The Vacuum Tree for the Intake Manifold has several outlets. Does anyone have a breakdown of what each outlet is for? Please see image. What you cant see in the image is the thread hole which I believe is for the Brake Booster Vacuum Hose.
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From what I can see in the "1967 Mustang Chassis Assembly Manual" (AM0020) on page 8, there's a lot of "plumbing" documented there.
In other words, if you do not have a set of 1967 Mustang Assembly Manuals, you should get a set. Get the paper version. You can make notes on paper a lot better than on disc.
Jim
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See we're starting with a 67 S code San Jose Built Coupe with C6, PS, A/C
Did/does it have thermactor?
The base is different from what I've seen used on other 390 cars
Suppose you already looked at the 67 S code San Jose pictures of the unrestored car as a start.
Will look for other examples or more from the same cars. I've found it difficult to find many 67-8 390's that haven't been played with allot
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I dont believe those two parts were used on this application.
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67 390GT A/C tilt thermactor the transmission vacuum supply was from a small nipple on the back of a carb spacer plate. Thermactor vacuum was supplied from the front of the engine PCV fitting. I dont have a pic of that fitting but its unique.
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I do not believe the brake booster supply line is originally painted Corporate Blue
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I do not believe the brake booster supply line is originally painted Corporate Blue
+1 The block it was attached to was not installed when the engine was painted so no way of it being attached
Looking at this example (7R02S2072xxx a non AC car) the rear vacuum block appears to not be used except for the power brake booster and the nipple/nipples are just caped off. Note - yes there appears to be a little blue paint overspray from some touch up the owner did somewhere in the area but we can, with ease, see the difference from the heavy paint application to the right on the base vacuum block and other items on the block and the light overspray
(https://www.concoursmustang.com/forum/gallery/18/6-280423155954-186651865.jpeg)
(https://www.concoursmustang.com/forum/gallery/18/6-280423155951-18663510.jpeg)
Only source that is not accounted for that I can think of for your application would be for the vacuum canister for the AC
https://www.concoursmustang.com/forum/index.php?topic=9931.0 (https://www.concoursmustang.com/forum/index.php?topic=9931.0)
Unfortunately don't have one of those oversized Electrical and Vacuum Diagram books for 67
Did find a few scans from the manual posted by a member in another thread but unless I missed one they are from the interior side though show that two lines go to the engine compartment One to the vacuum canister which would have gotten its vacuum from the engine
https://www.concoursmustang.com/forum/index.php?topic=13603.msg84323#msg84323 (https://www.concoursmustang.com/forum/index.php?topic=13603.msg84323#msg84323)
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Thanks everyone for your reply's, very helpful. I don't believe this mustang had the thermactor as it was destined for Phoenix going by the DSO. I assume that if the DSO was anything other than for California they did not have the Thermactor. (please correct me if I am wrong.
What I am seeing from the posts is that the two connectors joined together is not correct? I will try and locate the assembly books etc and do some more research.
Many thanks guys
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Thanks everyone for your reply's, very helpful. I don't believe this mustang had the thermactor as it was destined for Phoenix going by the DSO. I assume that if the DSO was anything other than for California they did not have the Thermactor. (please correct me if I am wrong.
Not the ones you showed in the picture in your initial post. Borrowed from a different application. The brass one if it has the large threaded hole on the end we can't see may have been used originally since I've seen both three and two nipple used though capped off if not used
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+1 on the painted steel vacuum line. Also the additional vacuum port for the automatic transmission can be seen at the back of the carb spacer in the 3rd picture.