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79-LUV'r
 Post subject: Vacuum
PostPosted: Tue Jan 09, 2007 4:30 pm 
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What are the absolute minimum vac lines needed on the 79 4x4? No cat, already disconnected the EGR tube.

Wanting to get rid of all the fluff under the hood.

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rondog
 Post subject:
PostPosted: Tue Jan 09, 2007 5:22 pm 
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With out going out and looking at mine I would say
The distributor advance,
The brake booster,
and the shorties to the diaphrams on the stock carb. if you still have one.

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Blue Meanie
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PostPosted: Tue Jan 09, 2007 6:24 pm 
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Dont forget the e.g.r valve. It kinda counts as vacuum because it has to connect to the intake.

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79-LUV'r
 Post subject: .
PostPosted: Tue Jan 09, 2007 8:35 pm 
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Having disconnected the EGR tube, can't I just pinch or cap off the EGR's vac?

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Blue Meanie
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PostPosted: Tue Jan 09, 2007 9:38 pm 
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Pardon me. I made an error with my last post. I meant to say p.c.v. not e.g.r. Yes, if you have removed the e.g.r., just cap off the vacuum lead.
Positive crankcase ventilation on the other hand ties directly to the intake so it would be a good idea to keep it functional. It has no power robbing effects on the engine and it's beneficial in keeping crankcase pressure stable and having cleaner oil longer.

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Previous setup: 4.1 Buick V-6/TH 350
Current setup: 400 Small Block Chevy V-8/TH 350
9" ford rear end/short bed/blue
What do Water, Electricity and Humans have in common... They all travel the path of least resistance.
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79-LUV'r
 Post subject: .
PostPosted: Tue Jan 09, 2007 10:26 pm 
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Gotcha,

Thanks Blue

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