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I need a vacuum diagram for a 1977 Chevrolet C10 with a 250 in-line 6

Just bought this truck not knowing that some of the emissions parts are now obsolete. I have found some of the original GM parts (unused) but I need the vacuum diagram to connect all of the missing lines to their proper places... This is my last resort before pulling a good engine and dropping a bib block in and saying to h@*l with the environment.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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cgtotty
  • 1 Answer

SOURCE: chevy s10 broken vacuum line

The plastic line in the wiring harness goes to the heater controls; and believe it or not , the other end goes to the vacuum tank - but its in the FENDER !!!!! behind the ABS, kinda under the drivers side hood hinge - great place to put one ain't it ? No wonder GM is going broke !! Good Luck

Posted on Dec 25, 2008

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gregstobbe
  • 56 Answers

SOURCE: CHEVROLET C10

you will have to go to the site below and choose fig 3 for the fuse box diagram
hope this was helpfull.
http://www.autozone.com/addVehicleId,1237304/initialAction,repairGuide/shopping/repairGuide.htm?pageId=0900c1528004c636

Ps. dont forget to rate my solution please. Thanks

Posted on Dec 27, 2008

  • 2002 Answers

SOURCE: Need vacuum diagram

I can't send you a diagram but I can tell you the basics that should get you mobile. Take a vacuum line from the lower front of your carb and hook it to your distributer vacuum advance. Take another from the front of your carb and run it to your EGR valve. It should be beside the carb on the intake manifold. At the rear of your carburator there is a large line coming out. It should be steel. It provides vacuum boost to your power brakes. Hook it up. Make sure all other vacuum outlets on the carb and intake are blocked off and you should be able to get mobile.

Posted on Jun 06, 2009

  • 1 Answer

SOURCE: i need the emission component and vacum hose

you can go to libary look up the information in chiltons book just make a copy of that page for vacuum hose diagram

Posted on Oct 23, 2009

ftw1952
  • 10319 Answers

SOURCE: what engine size do i have? chevy 1968 c10 vin

Check this website and double check your vin number to see if its correct. That way you can determine what you have for your engine sixze. If your engiune number had CE at the very beginning it would be a replacement Crate Engine. Yours is not a crate engine replacement as far as I can tell from the numbers you posted
http://www.nastyz28.com/decode.php

Posted on Apr 09, 2010

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Fig. 14: Vacuum hose schematic - 1978 250 engine, light duty emissions (except California)

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Fig. 15: Vacuum hose schematic - 1978 250 engine, light duty emissions (California)


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