Author Topic: 1976 and 1977 Vacuum line differences  (Read 8381 times)

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Offline RENOVATIONS

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Re: 1976 and 1977 Vacuum line differences
« Reply #15 on: September 07, 2010, 11:39:08 PM »
Here ya' go

Jeff

Projects:
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1978 Trans Am
1970 Camaro
1970 'Cuda

Offline eroc022

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Re: 1976 and 1977 Vacuum line differences
« Reply #16 on: September 08, 2010, 12:12:03 AM »
efe valve is in the passenger exhaust manifold, or right after it.... the actuator is further up, vacuum operated....
Eroc
Fixing the car that Restore A Muscle Car jacked up....

Offline 455 Shaker

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Re: 1976 and 1977 Vacuum line differences
« Reply #17 on: September 08, 2010, 09:46:28 AM »
Thanks - same diagram I have. So the EFE Valve and Actuator which appears to be on the driver side in the schematic is on the pax side?? Also, I have one line from my air cleaner going to the choke stove upright as shown but where does the other line from the air cleaner go (it runs from the intake nozzle right near the hose connect)? Right now my car runs great but it is not connected to anything. Thanks again.

Offline 455 Shaker

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HELP - 1976 and 1977 Vacuum line differences
« Reply #18 on: September 16, 2010, 09:59:26 AM »
Hi guys - I'm getting close!!

It appears that when the previous owner put on new exhaust manifolds, he did not put the efe valve and actuator back on. So I think I have two questions - maybe three!! I used this chart BUT

1. I have two available lines from the air cleaner - one goes to the open nipple on the choke stove but where does the line that is literally from the far side (air inlet) of the air cleaner go? It was not connected to anything when I got the car AND it does not show up on this chart - I am not talking about the drain line from the shaker scoop.

2. What do I do with the line on the efe and egr vacuum valve that used to go to the efe valve (assuming mine is gone)? Plug/cap it?

Finally, car idles very smooth but a little fast, runs a little hot and hesitates ever so slightly in hard acceleration. I want to get the vacuum lines straight as a first step but will take advice after that. I don't want to start going nuts on a good running original motor but instead take one thing at a time.

Dave

Offline JupiterBandit

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Re: 1976 and 1977 Vacuum line differences
« Reply #19 on: August 11, 2012, 11:36:19 AM »
The vacuum schematics are in the service manual

Where? I have the service manual and there is nothing that say vacuum in the index.