Ford 400 vacuum issue
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New User
Joined: Nov 2009
Posts: 16
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From: Wisconsin
Ford 400 vacuum issue
Hi all a newbie here, but i love this site. I have a 1977 F-250 4x4 Highboy with a 400 2v in it and at some time or another someone has either moved or changed some vacuum lines around. Just wondering if anyone may have a diagram or pics. I know right now the EGR valve is just capped off. Would just like to try to keep it as original as possible if i can. Thanks in advance.
Senior User
Joined: Jan 2010
Posts: 147
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From: Phoenix, AZ
I found original Ford drawings for the 351m and 400. Go to Google, type in 1977 Ford 400 diagram - it is in the pictures - look for image with a green color - select that one. It clearly shows the EGR and S port. I also have a vacuum issue and that drawing answered most of my questions. But, I still don't know where the E port on the carb goes. Good luck.
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