by texasjohn Sun Oct 12, 2008 4:32 pmI know its a 2nd gen but i need help finding a diagram for vacum lines. its a 74 all stock 302 but had to remove the egr plate under carb due to corrosion and not being able to find a replacement. Ive replaced the intake gaskets and valve cover gaskets but lost the pics/notes i took of the vacume lines......i have a hanes manual for 69-91 but its no help.
2 posters
NEED HELP W/ VAC LINES
texasjohn- Number of posts : 672
Location : Lewiston, Id
Registration date : 2008-06-01
sasktrini- Number of posts : 2067
Location : Saskatoon, SK, Canada
Registration date : 2008-05-20
Sounds like a tricky one... don't know if I've ever seen any vac diagrams ever posted anywhere... I've had to fake it many times, and bought a Haynes Emission Systems manual and a Haynes Rochester Carb manual... still a lot of guesswork.
I would start with the connections you know that went to different devices... if I'm right, it's probably the lines going to the carb, knowing which ports they take off from, right? You might find some documentation on your carb identifying the different ports (E, P, S), and this will provide clues what line goes where... like S is Spark and goes to the distributor...
Sorry I can't be more help. Maybe someone has a diagram or a '74 302 pic.
I would start with the connections you know that went to different devices... if I'm right, it's probably the lines going to the carb, knowing which ports they take off from, right? You might find some documentation on your carb identifying the different ports (E, P, S), and this will provide clues what line goes where... like S is Spark and goes to the distributor...
Sorry I can't be more help. Maybe someone has a diagram or a '74 302 pic.
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