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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: BADAZ chevy guy on April 12, 2014, 11:06:09 pm

Title: vacuum schematic
Post by: BADAZ chevy guy on April 12, 2014, 11:06:09 pm

1977 C10. I need a vacuum schematic for the stock 350 intake with a Q-Jet carb.

Title: Re: vacuum schematic
Post by: hondaman on April 12, 2014, 11:39:45 pm

This is a 81 C10 2wd.  Don't know if it's of any use to you, but I'll throw it out there.

Title: Re: vacuum schematic
Post by: bd on April 13, 2014, 12:26:37 am

Quote from: BADAZ chevy guy on April 12, 2014, 11:06:09 pm

1977 C10. I need a vacuum schematic for the stock 350 intake with a Q-Jet carb.

Look in the 1977 Repair Manual (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_77_1977_Chevrolet_Light_Truck_Service_Manual.pdf) beginning on page 6E-3 (Pg 647).

Title: Re: vacuum schematic
Post by: bake74 on April 13, 2014, 07:36:55 am

Quote from: bd on April 13, 2014, 12:26:37 am

Quote from: BADAZ chevy guy on April 12, 2014, 11:06:09 pm

1977 C10. I need a vacuum schematic for the stock 350 intake with a Q-Jet carb.

Look in the 1977 Repair Manual (http://www.73-87chevytrucks.com/techinfo/7387CKMans//Service/ST_330_77_1977_Chevrolet_Light_Truck_Service_Manual.pdf) beginning on page 6E-3 (Pg 647).

     You need to read through the bottom of the diagrams, there are plenty to choose from, CA. is grouped with high altitude of course, then there is a C-10 version, then a C/K version with/without AC, so on, so on.  Oh how they really thought they were smart and tried to confuse everybody.  ::)

Title: Re: vacuum schematic
Post by: BADAZ chevy guy on April 13, 2014, 10:39:45 am

Okay! So, if I'm reading these right, diagram 6E-9 (Page 651) looks the closest to what I have. No EGR, no vac canister, with A/C.
Thank you.