cesar280z Posted May 9, 2013 Share #25 Posted May 9, 2013 The third line I believe goes under the aux air valve , it heats up an element on the aux air valve to make it work properly. .I believe Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422928 Share on other sites More sharing options...
mgood Posted May 9, 2013 Share #26 Posted May 9, 2013 Here is a picture of my 76 - 280 it is similar to yours, might help. Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422947 Share on other sites More sharing options...
siteunseen Posted May 9, 2013 Share #27 Posted May 9, 2013 If your talking about that big pipe below the head on the block that's for the PCV system. A hose runs from there to the PCV valve screwed in under your intake. Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422953 Share on other sites More sharing options...
siteunseen Posted May 9, 2013 Share #28 Posted May 9, 2013 (edited) If your talking about that big pipe below the head on the block that's for the PCV system. A hose runs from there to the PCV valve screwed in under your intake. I can't get the pictures in my library to cooperate right now. OK I got it. Where the red line is. Edited May 9, 2013 by siteunseen Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422955 Share on other sites More sharing options...
pureZero Posted May 9, 2013 Author Share #29 Posted May 9, 2013 That's the single biggest PCV pipe I have ever seen in my life... Good to know though, thanks! Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422965 Share on other sites More sharing options...
siteunseen Posted May 9, 2013 Share #30 Posted May 9, 2013 Yeah, that's good to know. You wouldn't want that flowing coolant. Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422983 Share on other sites More sharing options...
pureZero Posted May 9, 2013 Author Share #31 Posted May 9, 2013 I wasn't exactly expecting the PCV system to be that damn big, so it threw me off. Thanks! Link to comment https://www.classiczcars.com/topic/46395-what-is-needed-for-a-1978-pfi-280z-to-run/?page=3#findComment-422985 Share on other sites More sharing options...
Patcon
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