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#1 |
Registered User
Join Date: Oct 2009
Location: Calgary, Alberta
Posts: 21
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Vacuum lines?
So I have been taking a look at the vacuum lines on my truck, most are useless and well for some reason my vacuum advance line is coming out of the vacuum port thing attached to my thermostat housing, is it normal? I have a friend running a 351w in his 79 f250 and he told me just to run it off my carb and I'll be fine. Any ideas? I'll get a pic tomorrow.
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#2 |
Registered User
Join Date: Aug 2009
Location: Lambertville MI
Posts: 962
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Re: Vacuum lines?
what kind of carb do you have? the only vacuum lines i have on my truck is the vac advance off the carb, power brakes off the carb, or intake, line to trans off intake, line for heater controls, and breather for pcv valve. i have an edelbrock carb but you can run the lines this way on any carb
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"I'll keep my guns, money, and freedom. You can keep the "change" |
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#3 | |
Registered User
Join Date: Oct 2009
Location: Calgary, Alberta
Posts: 21
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Re: Vacuum lines?
I have a Rebuilt quadra jet, and here is a pic of my rats nest I have for vacuum lines.
![]() ![]() And *****in85 when you said Quote:
And on the photo of the rear vacuum port I have cruise, heater control, trans and the black and yellow one runs back into one of the vacuum ports on the front of the manifold. So I'm a little confused if you know what I mean. I will be removing all emissions (charcoal canisters and such) along with cruise (broken and don't use it) and I just picked up an egr block off plate, but until I install it should I plug the hole in it? was never hooked up since I bought it. Any help or suggestions would be appreciated. |
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#4 |
Registered User
Join Date: May 2009
Location: Sparks, NV
Posts: 913
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Re: Vacuum lines?
ok, what you're going to need are a bunch of the little black vacuum caps (they're rubber i think). and you're going to need pipe plugs. start with the cruise control, take all those components out. the only things you need going into that quadrajet are: vacuum line for PCV valve, vacuum line for vacuum advance on the distributor, the line running to your brake booster, and the metal lines for your choke. every other vacuum port on the carb can be capped off. make sure you buy new vacuum lines, they're cheap and you'll be glad you did. start with that and let me know how it goes.
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Greg 1974 GMC 1/2 Ton SWB Fleetside L33 5.3/4l65e .................__
............._____l __\__ ..............l_(O)_ l___(O)] |
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#5 |
Registered User
Join Date: Aug 2009
Location: Lambertville MI
Posts: 962
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Re: Vacuum lines?
http://67-72chevytrucks.com/vboard/s...d.php?t=370041
look at posting number 6. thats how i had mine hooked up and everything was fine. my motor didnt have the exhaust blockoffs though. or egr
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"I'll keep my guns, money, and freedom. You can keep the "change" |
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#6 |
Registered User
Join Date: Oct 2009
Location: Calgary, Alberta
Posts: 21
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Re: Vacuum lines?
So to start off I want to thank everyone who gave advice and posted, as well as the form it's self! woke up this morning with a e-mail wishing me a happy birthday and thought that was pretty cool.
So as you know I took sometime to do this and well took a final photo this morning, truck is running alot better, still some blow by but it's working great once warmed up! Along with the truck running great, and the birthday wishes, I also found myself a job in a new shop, after being part of the unemployed for 10 months it's nice to know someone is willing to give me another shot at my dream. Here is the finished product for now, and thanks again to everyone. ![]() ![]() |
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#7 |
Parts and more parts
Join Date: Nov 2003
Location: Lebo, Kansas (middle of nowhere
Posts: 6,821
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Re: Vacuum lines?
I eliminated all but the absolute necessary ones. Then I changed out the engine and eliminated the rest when I got rid of the factory carb.
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Frank Last edited by piecesparts; 11-21-2009 at 06:15 PM. |
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