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Need help running hoses from vaccume proportioning valve

Old Mar 11, 2001 | 07:28 PM
  #1  
zupmanZ28's Avatar
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
Need help running hoses from vaccume proportioning valve

the valve thats in front of the air cleaner sort of between the alternator and A/C unit, has four hoses coming off of it. One goes to the vaccume can by the fender on the drivers side, and the three others are just lying there, not attached to anything. The electronic carb is gone, replaced with an older style mechanical Qjet, and an older vaccume HEI distributer. Where should these three other lines be running to? Do i need them at all? Does anyone have a diagram of where they should be going? thanks for all you help...

EDIT: BTW, the whole system is from an LG4(exc. carb and dist.), if that helps at all.

------------------
My 1986 Z28 and more!!
85 IROC w/ 1364 miles!

R.I.P Dale Earnhardt

[This message has been edited by zupmanZ28 (edited March 11, 2001).]
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Old Mar 12, 2001 | 06:41 PM
  #2  
SgtSkip's Avatar
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From: Beaufort, SC
Try this thread. Vader put a great vacuum hose routing diagram in it.

https://www.thirdgen.org/messgboard/...ML/005485.html



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85T/A 305/QJ work in progress.
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Old Mar 12, 2001 | 07:03 PM
  #3  
zupmanZ28's Avatar
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
thanks, that helps a little bit. Im still kinda confused though, the NON cc carb does not have most of tose ports, so do i even need the valve anymore? Or am i getting no timeing advacne because the carb has no vaccume? That might answer some questions as to why i just ran a best time of 15.3 at 92 MPH, which is about 1.5 seconds slower than i was planning. could that be a problem?

------------------
My 1986 Z28 and more!!
85 IROC w/ 1364 miles!

R.I.P Dale Earnhardt

[This message has been edited by zupmanZ28 (edited March 12, 2001).]
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Old Mar 13, 2001 | 07:30 AM
  #4  
merf23's Avatar
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From: waterford, CT 06385
I have an 84 that i took all the smog stuff off of. I connected the PCV, vac advance and heater control vacuum to the carb. I removed the charcol cannister and EGR (i have a non EGR intake) as well as the smog pump. I welded up the holes in the exhaust manifold where the air lines connected. Also put a small filter on the vent line from the gas tank that went to the charcoal cannister.
We dont have a visual emissions check here, only the sniffer...it passed last time...

------------------
1984 Z28 (L69) monochrome tangerine orange with IROC decals and hood
1987 IROC wheels with Goodyear GSC's
305 from 87 IROC with 1994 LT1 cam (203/208 .450/.460")
performer intake with holley 600 (#1850)
Qjet is in the works
dynomax cat-back
non WC T-5 with 0.73 5th
3.27 nine-bolt
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Old Mar 13, 2001 | 05:07 PM
  #5  
zupmanZ28's Avatar
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Joined: Nov 2000
Posts: 1,760
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From: Newark, DE
Car: 86' Z28
Engine: 355
Transmission: T-56
Man, its too bad we have visual check in DE, that crap would be gone in a second if we did.

------------------
My 1986 Z28 and more!!
85 IROC w/ 1364 miles!

R.I.P Dale Earnhardt
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