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73-87 Chevy _ GMC Trucks => Fuel Systems and Drivability => Topic started by: JohnnyPopper on June 22, 2023, 09:13:04 PM

Title: 75-78 vacuum hose routing, California spec.
Post by: JohnnyPopper 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!

Title: Re: 75-78 vacuum hose routing, California spec.
Post by: bd 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 (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_78_1978_Chevrolet_Light_Truck_Service_Manual.pdf), pages 6E-6 (Fig. 6E-8) and 6E-10 (Fig. 6E-16)?   8)

Title: Re: 75-78 vacuum hose routing, California spec.
Post by: JohnnyPopper on June 23, 2023, 12:36:04 PM

Wow bd! Like reading an illustrated Bible!

Thanks man, I owe you big time!