Help with vacuum lines

Reply Subscribe

Thread Tools

Search this Thread

Apr 22, 2016 | 10:10 PM

ChrisCoufal

Thread Starter

Staging Lane

Joined: Sep 2014

Posts: 58

Likes: 0

Help with vacuum lines

07 LQ4
LS6 intake and valley cover
4L60E
All emissions crap deleted

This is going into a 66 C10 truck.....no power brakes (right now) and not sure what else is needed or can be capped off.

I need some help piecing together the puzzle. What gets connected where?
Thanks

Last edited by ChrisCoufal; Apr 22, 2016 at 10:41 PM.

Apr 22, 2016 | 10:11 PM

ChrisCoufal

Thread Starter

Staging Lane

Joined: Sep 2014

Posts: 58

Likes: 0

just realized there is another port on back of intake by #7. Where does that go also? Thanks

Apr 22, 2016 | 10:36 PM

98CayenneT/A

TECH Junkie

Joined: Nov 2013

Posts: 3,913

Likes: 366

From: White Bear, Mn

Hopefully someone corrects me if I'm wrong but a vacuum line goes from 3 to 6.

7 goes to your break booster
2 goes to 1
8 goes to the radiator
3 goes to 6

Here is also a couple pictures to help ya out. It's my ls1 but still should be some help

Apr 22, 2016 | 10:38 PM

ChrisCoufal

Thread Starter

Staging Lane

Joined: Sep 2014

Posts: 58

Likes: 0

Also what about running a catch can? Where does that fall into the mix?

Apr 22, 2016 | 10:44 PM

98CayenneT/A

TECH Junkie

Joined: Nov 2013

Posts: 3,913

Likes: 366

From: White Bear, Mn

That I am not sure

Apr 22, 2016 | 10:55 PM

kinglt-1

TECH Senior Member

iTrader: (26)

Joined: Jul 2005

Posts: 5,894

Likes: 254

From: Ft. Wayne, IN

Catch can goes in line with the vacuum line that has the PCV valve. In the last pic lower hose that connects behind TB.

Apr 23, 2016 | 08:07 AM

SlasherVRGR

TECH Apprentice

iTrader: (1)

Joined: May 2013

Posts: 363

Likes: 1

From: NEPA

Help with vacuum lines

#4 is for the FPR I believe
The little one by #7 is for the HVAC controls
The hole by #7 is for the MAP sensor.

Also 6&3 don't go to each other. They're both crankcase vents.

6 can be blocked and 3 goes to 2, as long as the valley cover is an 04+ ls6 cover

Last edited by SlasherVRGR; Apr 23, 2016 at 08:43 AM.

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Verdad Gallardo

10 Camaros You Should Never Buy

10 LS Engine Myths That Refuse to Die

Verdad Gallardo

Apr 26, 2016 | 09:37 PM

ChrisCoufal

Thread Starter

Staging Lane

Joined: Sep 2014

Posts: 58

Likes: 0

anyone else have any info or pics? Thank you

Apr 27, 2016 | 02:06 PM

#10

conan

TECH Senior Member

iTrader: (5)

Joined: May 2004

Posts: 6,492

Likes: 6

From: Back in the Burg

#1-2-3-6 are for the PCV system. Get a catch can and follow their instructions to hook it up with the LS6 valley cover you have. http://www.mightymousesolutions.com/

#4 is for the EVAP. If you are going to vent your fuel tank to a charcoal can or just run a breather you can cap it.

#5 is the steam vents. Run this to the radiator.

#7 is for the brake booster. Cap it if you don't need it.

#8/9 would connect in between the radiator and your steam port in #5. Get rid of them and just run #5 to the radiator. You can take a pair of channel locks and twist the nipples out of the throttle body.

Apr 11, 2021 | 02:12 AM

#11

whip game

Teching In

Joined: Oct 2016

Posts: 3

Likes: 0

Quote:

Originally Posted by kinglt-1

Catch can goes in line with the vacuum line that has the PCV valve. In the last pic lower hose that connects behind TB.

where do that same hose go without the catch can?

Apr 11, 2021 | 09:33 AM

#12

G Atsma

TECH Senior Member

Joined: Jun 2016

Posts: 22,290

Likes: 3,615

From: Central Cal.

Just connect them

Apr 11, 2021 | 10:19 AM

#13

whip game

Teching In

Joined: Oct 2016

Posts: 3

Likes: 0

Quote:

Originally Posted by G Atsma

Just connect them

with no catch can where do I connect it (the back of the intake orrrr?)

Apr 11, 2021 | 11:22 AM

#14

G Atsma

TECH Senior Member

Joined: Jun 2016

Posts: 22,290

Likes: 3,615

From: Central Cal.

There are hoses going in and out of the catch can. You asked where they go without the catch can. The hoses going in and out of the can get connected.
If this isn't what you asked, explain yourself better.

Apr 11, 2021 | 12:04 PM

#15

whip game

Teching In

Joined: Oct 2016

Posts: 3

Likes: 0

Quote:

Originally Posted by G Atsma

ok im sorry so i dont have a catch can. What im trying to figure out is where the number 2 location in the picture above go? because i have no idea. I found a picture but im not sure if its right.