77 TA vacuum Pipes

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carterdj
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Posts: 54
Joined: Fri Mar 05, 2010 7:58 pm
Year: 1977
Model: Trans Am
Engine: 400
Name: Darren
Location: Ipswich
Location: Ipswich, Suffolk
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77 TA vacuum Pipes

Post by carterdj » Sat Jun 09, 2012 3:10 pm

Hi all,

I am in another pickle :'(

I have no idea of the correct placment of the vacuum pipes on my 1977 pontiac 400. The pictuewr in the service manual does not make a lot of sense to me as i don;t have all the bits on there. I have sent Robin and email at Autopontiac, but i am trying to cover all my bases. Here are some pics. I have tried to number the pipes for reference. It also has a charcol canister but no EGR valve or the one connected to the air cleaner (EFE value?)

I also have a thick brown wire coming from the loom (uncer the txt for pipe 7 on right hand side) I have no idea where it goes but it is live when ignition is on!


Any help before the petrol and matches come out..............

Thanks

Darren
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thirdgen

Re: 77 TA vacuum Pipes

Post by thirdgen » Sat Jun 09, 2012 7:13 pm

i would just try and run it see how it runs and block off all the leaks as long as the dizzy has a pipe and the servo

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thebandit92
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Joined: Mon Mar 30, 2009 7:36 am
Year: 1980
Model: Trans Am S/E
Engine: 301
Name: Jimmy
Location: Wigan, England
Location: Wigan, England
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Re: 77 TA vacuum Pipes

Post by thebandit92 » Sun Jun 10, 2012 12:25 pm

thirdgen wrote:i would just try and run it see how it runs and block off all the leaks as long as the dizzy has a pipe and the servo
Yep,thats how mine is/was :roll: plus the one from trans,looks neater without all the un needed crap as well.Not sure what that brown wire is but looking at thickness of it i can only think of two underhood wires that size,alternator and starter solenoid,what type of connector does it have on it?,at first i thought power for dizzy but its wrong side and too thick i think.
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SUPERCHARGEDGTA

Re: 77 TA vacuum Pipes

Post by SUPERCHARGEDGTA » Sun Jun 10, 2012 9:06 pm

has it got an electronic choke? has it got a wire connected to it? if not, should the brown wire go there?

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