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Old 10-04-2012, 05:53:57 PM   #1
1971CamaroGuy
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What are these ports on my LS engine?

I have a few ports that I am trying to figure out what they are, I know the rear port on the back of the intake goes to the brake booster

Question: can I TEE off that and attach my vacuum canister to it and run both my brake booster and vacuum for my ac / heat controls?

Now I have a few other ports I don't know what they do, any help would be great

# 1 - on back of drivers valve cover

#2 - passenger side of throttle body

# 3 - drivers side of throttle body





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1971 Camaro - work in progress

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Last edited by 1971CamaroGuy : 10-04-2012 at 05:56:17 PM.
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Old 10-04-2012, 06:52:37 PM   #2
Leonards78LT
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This should help you

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My toy since June 1983: 1978 Camaro Type LT: Iron block LS6, 2004R, 3.42 posi. Boulevard Bruiser, Hi-Way Cruiser
http://www.chevythunder.com/Camaro%2...gh%20view.jpg"

Wife's toy since April '78- 1973 Mustang Grande 351C 2V #'s match.
http://www.chevythunder.com/1973%20F...ang%201999.jpg

DD's
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2006 Silverado 1500 ext. cab 5.3L
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Old 10-04-2012, 07:02:19 PM   #3
1971CamaroGuy
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Cool thanks, this has me asking a few more questions lol

On that diagram:

# 7 PVC Valve? I'm assuming it might be a good idea to have it? I guess the port on the drivers rear valve cover is part of that too?

# 5 Evap canistor purge solenoid, I guess I can cap that off?? I don't have a evap canister anymore. My fuel tank is vented with a 4th gen camaro vent thingy

And I didn't see #1 on my intake for HVAC, I'll double check though

Thanks again
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Old 10-04-2012, 07:55:29 PM   #4
Leonards78LT
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Quote:
Originally Posted by 1971CamaroGuy
Cool thanks, this has me asking a few more questions lol

On that diagram:

# 7 PVC Valve? I'm assuming it might be a good idea to have it? I guess the port on the drivers rear valve cover is part of that too?

# 5 Evap canistor purge solenoid, I guess I can cap that off?? I don't have a evap canister anymore. My fuel tank is vented with a 4th gen camaro vent thingy

And I didn't see #1 on my intake for HVAC, I'll double check though

Thanks again
Use all the ports designed for the PVC system. The Gen III engines need to breath through the crankcase ventilation.


The port can be elimnated for the EVAP system as long as your vehicle does not have to be emission compliantm but will require reprogramming the computer to eliminate the emission codes.
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My toy since June 1983: 1978 Camaro Type LT: Iron block LS6, 2004R, 3.42 posi. Boulevard Bruiser, Hi-Way Cruiser
http://www.chevythunder.com/Camaro%2...gh%20view.jpg"

Wife's toy since April '78- 1973 Mustang Grande 351C 2V #'s match.
http://www.chevythunder.com/1973%20F...ang%201999.jpg

DD's
2001 Buick Century
2006 Silverado 1500 ext. cab 5.3L
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Old 10-05-2012, 08:37:02 AM   #5
1971CamaroGuy
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Thanks again for the help, any ideas on what the PVC system lines are called? Is there an actual valve in that type of set-up?

I guess I am at a loss on what to look for and set this up, can I just use regular rubber hoses?
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Old 10-05-2012, 08:38:21 AM   #6
1971CamaroGuy
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I think I found it.....wow that's kind of high

http://www.hawksthirdgenparts.com/pr...se-System.html

http://www.ebay.com/itm/99-02-Camaro...7470f5&vxp=mtr
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Old 10-05-2012, 11:47:55 AM   #7
1971CamaroGuy
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Thanks for the help, I ended up getting the PVC hose assy from a member on LS1tech for $55 shipped, engine had less than 5k on it when pulled so it looks new. Any penny I can save here and there helps lol
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Old 10-05-2012, 05:13:12 PM   #8
Leonards78LT
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Quote:
Originally Posted by 1971CamaroGuy
Thanks for the help, I ended up getting the PVC hose assy from a member on LS1tech for $55 shipped, engine had less than 5k on it when pulled so it looks new. Any penny I can save here and there helps lol

Glad to help, I have been there, down that when I was doing my conversion.
__________________
My toy since June 1983: 1978 Camaro Type LT: Iron block LS6, 2004R, 3.42 posi. Boulevard Bruiser, Hi-Way Cruiser
http://www.chevythunder.com/Camaro%2...gh%20view.jpg"

Wife's toy since April '78- 1973 Mustang Grande 351C 2V #'s match.
http://www.chevythunder.com/1973%20F...ang%201999.jpg

DD's
2001 Buick Century
2006 Silverado 1500 ext. cab 5.3L
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Old 10-12-2012, 05:01:53 PM   #9
1971CamaroGuy
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ok....got my pvc valve line today, I have NO clue how this goes on in relation to my ports or even if I have it together right.

Could someone look at this and tell what goes where if they can??

Thanks in advance

#1 is the actual pvc valve I think. It looks like it could be missing a rubber piece that lets me attach it to a port

#2 this end has a plastic thing, about 5/8" in dia...but it doesn't look like it attaches to anything on my motor

#3 there's an empty spot on this "Y" that should have something attached?? Maybe a line or something? If so where does it go???

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