Author Topic: 75-78 vacuum hose routing, California spec.  (Read 994 times)

Offline JohnnyPopper

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75-78 vacuum hose routing, California spec.
« on: June 22, 2023, 09:13:04 PM »
I PROMISE I have spent the last hour searching for this on the forum! I need an Epson Salts bath for the tension!

I found VZ's 80-86 lead. Some other relevant leads, still no go on these specific models.

Doing a deep dive on the intake/carb/tuneup replacement and will be replacing the ported vacuum switches.

1978 K10, 5.7/TH350 4bbl, dual tanks/canisters. Please ask for any additional info you may need.

Any guidance would be appreciated. THANKS!
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction

Offline bd

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Re: 75-78 vacuum hose routing, California spec.
« Reply #1 on: June 22, 2023, 11:22:01 PM »
There is a treasure trove of information in the Technical Forum.  Did you peruse the 1978 CK Repair Manual, pages 6E-6 (Fig. 6E-8) and 6E-10 (Fig. 6E-16)?   8)
Rich
It's difficult to know just how much you don't know until you know it.
In other words... if people learn by making mistakes, by now I should know just about everything!!!
87 R10 Silverado Fleetside 355 MPFI 700R4 3.42 Locker (aka Rusty, aka Mater)

Offline JohnnyPopper

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Re: 75-78 vacuum hose routing, California spec.
« Reply #2 on: June 23, 2023, 12:36:04 PM »
Wow bd! Like reading an illustrated Bible!

Thanks man, I owe you big time!
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction