I can't believe this. I am re-installing the intake on my '85 IROC Z28. I took pics as I took it apart, but I didn't turn out to have a good pic of the vacuum lines on the passenger side of the dizzy. I for some reason, the vacuum line that connects to this vacuum switch in the attached pic, I can't find. I know there was something connected, but I can't find it. The plastic lines on the right of this vacuum switch module go to the EGR valve, and to the front bottom of the throttle plates.

I think the rear vacuum line I'm missing may go through the firewall to the heater controls, but 1, I'm not sure, and 2, I can't find the line. Can someone help me confirm what vacuum line this is supposed to be, and help me with where it is supposed to come from.

Thanks so much.

Ed

 

Any help here?

http://chevythunder.com/fuel%20injec...cuum%lineshtml

 

I can't verify the link, I can't get it to work! BOOO!!!


http://
www.
chevythunder.com/
fuel/%20injection%vacuum%lines
html

I searched
1985, IROC, Z28, vacuum, lines, diagram

chevythunder had a decent diagram

Sorry my computer skill is less than " Dummy "

 

Nothing connects back there.
https://www.thirdgen.org/forums/post...12-post33.html

 

Thanks guys. I that helps a bunch. I really appreciate the quick response too.

 

 

As Chevy86 says, no line attaches there. That is a vent to relieve vacuum from the EGR solenoid. It had a little foam filter on it originally but the foam tends to rot and fall apart over time.