I went to Lordco and asked for some Vac lines, they said what size and how long... I have no idea because my 302 did not come with any. Ive gone through a couple ford manuels but they have very little info on vac lines. So last resort I am asking for help. What size and length should be good for vac lines? Ive read you only really need 2 or 3. Thanks for your time! -Andrew
most of em are 1/8th inch ID. A couple are bigger. I think there are maybe a few 3/16th and 1 or 2 1/4. Depends on the year. Like I'm pretty sure for my 74 302 I bought 10 feet of 1/8" ID tubing and didn't need any others. But I did need caps in 3/16" and 1/4". My 93 EFI 5.0 needed 1/16" ID 1/8" OD hard plastic vacuum lines.
I think we need to also know where each connects from and to. I too was missing several. I found a couple of pictures of 302 engines and tried to enhance the image to see where each tube went but its been a nightmare.
See if this helps for routing and connections: http://1bad6t.com/Maverick/repair/exploded_views_emission.html
1970-1972 1973 without A/C 1973 with A/C 1974 without A/C 1974 with A/C 1975 without A/C 1975 with A/C 1976 without A/C 1976 with A/C 1977 without A/C 1977 with A/C