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91 vacuum line help

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Old Jun 4, 2007 | 05:21 PM
  #1  
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
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91 vacuum line help

i took apart my motor awhile back and can`t remeber how the vacuum lines go back. any pic`s or advice would be great
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Old Jun 4, 2007 | 08:12 PM
  #2  
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From: Gulfport MS
Car: 83 Camaro
Engine: 383
Transmission: T5
Axle/Gears: 4th gen 10 bolt 3:42 POSI
Re: 91 vacuum line help

http://www.autozone.com/az/cds/en_us...rInfoPages.htm
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Old Jun 7, 2007 | 05:23 PM
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: 91 vacuum line help

thanks,but that didn`t help me much,anyone
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Old Jun 7, 2007 | 05:56 PM
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From: Manchester, CT
Car: 1991 Camaro RS
Engine: 350 TPI
Transmission: 700R4 Auto
Axle/Gears: 1 legger 2.xx(needs upgrade)
Re: 91 vacuum line help

if you could take pics of the different hoses and what they are currently connected to it would be easier to help you!
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Old Jun 7, 2007 | 07:08 PM
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: 91 vacuum line help

If figure 24 didn't help you out you're going to need to show us some pics of what you need.
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Old Jun 8, 2007 | 08:47 AM
  #6  
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: 91 vacuum line help

i`ll try to get some tonite,it`s the lines by the rear plenteum by the distibutor
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Old Jun 8, 2007 | 09:00 AM
  #7  
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Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: 91 vacuum line help

Does this help? I know there are more but this is the only pic I have on hand for that area.
Attached Thumbnails 91 vacuum line help-vacuum.jpg  
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Old Jun 8, 2007 | 09:07 AM
  #8  
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Car: 85 Iroc-Z
Engine: 383 TPI Procharger D1SC
Transmission: TKO600
Axle/Gears: Strange S60 3.73
Re: 91 vacuum line help

Where do those hoses from the 3 way valve go to?
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Old Jun 8, 2007 | 09:15 AM
  #9  
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: 91 vacuum line help

that helps alittle,i have to see when i`m off work
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Old Jun 8, 2007 | 09:20 AM
  #10  
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: 91 vacuum line help

One goes to a port on the plenum
One goes to the vacuum line for the cruise control
One goes to a hard vacuum line coming out of the firewall for the HVAC.
You can see which is which in the pic.
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Old Jun 8, 2007 | 12:00 PM
  #11  
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Re: 91 vacuum line help

I have been to this link sooooo many times during my rebuild.....hope it helps....



http://www.chevythunder.com/fuel%20i...um%20lines.htm

good luck....
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Old Jun 10, 2007 | 02:05 PM
  #12  
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: 91 vacuum line help

i think i have it all together thanks everyone,now the plug for the egr i can`t find ion the wire harness. any help wit that
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Old Jun 11, 2007 | 07:19 AM
  #13  
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: 91 vacuum line help

The EGR solenoid plug? Probably just fell back behind the engine. Don't worry it can't go far. The wire's only about 6 inches long and the tranny is right below it.
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Old Jun 11, 2007 | 07:26 AM
  #14  
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From: east peoria,il
Car: 91 z28, 07 trailblazer ss
Engine: lt1lt4 hot cam,ls2
Transmission: t56
Axle/Gears: 3.73
Re: 91 vacuum line help

i will check it out tonite,i am supposed to get my new flowmaster 2morrow,then the fine tuning should begin. thanks for the help!
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