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#1
09-07-2010, 01:18 PM
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'77 T/A Vacuum Line Routing?
Does anyone have a 1977 Pontiac Service Manual? If so, could you post a picture from the manual that shows the correct routing of the emissions/vacuum lines? This would be for the base 400 engine with auto trans (in an F-body).
I would greatly appreciate it 
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#2
09-08-2010, 08:57 AM
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...anyone? Bueller...Bueller
 How about a few pics of an original/correct engine compartment with the air cleaner removed? |
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#3
09-08-2010, 12:45 PM
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I posted these for somone else a while ago. This is from the 78 manual. Not sure if they're the same.
__________________
1966 Catalina Station Wagon 1986 Fiero GT 1987 Cadillac Allante' 1995 Formula Firehawk #592 
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#4
09-08-2010, 02:47 PM
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1977 Vacuum Schematic:
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#5
09-08-2010, 03:01 PM
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Great, thanks for the replies!
Anyone know what the "EGR backpressure transducer" is or what it looks like (from post #4)? Is it like a check valve? |
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#6
09-09-2010, 10:48 AM
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The Service Manual doesn't say much about it.
It appears to be an inline type of filter. It may be a 'backfire' type of device to keep reverse pressure from going the other way? 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#7
09-09-2010, 11:11 AM
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Quote:
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#8
09-10-2010, 11:31 AM
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Quote:
Thanks |
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#9
09-11-2010, 02:17 PM
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John Witzke's mint 100 percent original 1977 W72:
__________________
1976 LeMans B09 Freeway Enforcer, 455/M40 Smokey 1977 Trans Am, 400/M21 Black/Gold Bandit. 44K actual miles 2017 Sierra SLT 1500 Z71 4X4  2019 Canyon SLT Crew 4X4  
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#10
09-14-2010, 02:37 PM
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That's exactly what I was looking for - thanks!
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