Help

[sgentilella]

I had a project that should have been relatively easy. But I ended up with massive mission creep. Does anyone know of a site or a resource that has a really good diagram and explanation of where all the vacuum lines under the intake manifold go?

Thank you

[secondchance]

https://www.corvetteforum.com/forums/attachments/c4-zr-1-discussion/48198453d1503319385-secondary-throttle-system-delete-question-plenum-vacuum-schematic-1990.jpg

Try above.

[Dynomite]

Post 31 - Vacuum Systems 90' and 91' (Secondary and Cruize/HVAC) (http://forums.corvetteforum.com/c4-zr-1-discussion/3005470-tech-info-lt5-modifications-rebuild-tricks-500-hp-2.html#post1581460752)

Post 234 - Installation of New Secondary Port Vacuum System Lines (https://www.corvetteforum.com/forums/c4-zr-1-discussion/3005470-tech-info-lt5-modifications-rebuild-tricks-500-hp-12.html#post1590759176)

[sgentilella]

Thanks for diagram. I'll give it shot.