Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

What is this line/hose for?

Thread Tools
 
Search this Thread
 
Old Apr 13, 2014 | 10:25 PM
  #1  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default What is this line/hose for?

So when removing the LS1 intake, when I went to squeeze with my fingers, and not much force was applied, the rubber was so soft it practically fell apart and looks like this on the front by the throttle body and in the back behind the intake, so of course going to replace, but wanted to know what it is, do I need it are there any mods for this hose to hide or anything to that matter..



Im asking since I have the intake off and trying to do as much as I can while its off, any mods worth doing now I want to do.

Is this the "Air/EGR" mod that other do? or is that something else all together.

Reply
Old Apr 13, 2014 | 10:32 PM
  #2  
GhostofKrypton's Avatar
On The Tree
iTrader: (7)
 
Joined: Mar 2008
Posts: 113
Likes: 0
From: Tucson, AZ
Default

pvc lines. Look into a catch can if you are trying to clean it up.
Reply
Old Apr 13, 2014 | 10:35 PM
  #3  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

So if I got with the catch can, does that mean I can eliminate some of those hoses in the back?

Is that the purpose of the catch can?
Reply
Old Apr 13, 2014 | 10:56 PM
  #4  
WS6ICK2k's Avatar
TECH Apprentice
 
Joined: Oct 2008
Posts: 332
Likes: 0
From: North Carolina
Default

Originally Posted by CubanGT
So if I got with the catch can, does that mean I can eliminate some of those hoses in the back?

Is that the purpose of the catch can?
The purpose of a catch can is to keep oil from accumulating in your intake manifold. The LS1 PCV system doesn't really do a great job of filtering oil out which why so many people run a catch can. If you decide to get one there is diagrams showing exactly how most people run them, and thus would replace your existing dry rotted rubber hose, for either newer ones or braided lines.

Usually if your car is modified much such as Heads/Cam etc.. it will build more crankcase pressure and more oil will actually accumulate. If you have ever noticed some people add filter oil caps to try to reduce the crankcase pressure.
Reply
Old Apr 13, 2014 | 10:58 PM
  #5  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

ok, thanks, so do I just search here in this forum for the catch can diagram? or is that else where
Reply
Old Apr 13, 2014 | 11:05 PM
  #6  
WS6ICK2k's Avatar
TECH Apprentice
 
Joined: Oct 2008
Posts: 332
Likes: 0
From: North Carolina
Default

Originally Posted by CubanGT
ok, thanks, so do I just search here in this forum for the catch can diagram? or is that else where
Yea theres plenty of diagrams on here if you search. Some vendors actually send a diagram with their CCs with recommendations on how to run them. You could also look into running a LS6 style PCV system as well. I always have to use google to find anything on here now just add LS1tech on the end of what your searching for then click more results. Seems to work way better for me than using the search feature.

Last edited by WS6ICK2k; Apr 13, 2014 at 11:12 PM.
Reply
Old Apr 13, 2014 | 11:12 PM
  #7  
Jake the SSnake's Avatar
TECH Enthusiast
iTrader: (11)
 
Joined: Dec 2002
Posts: 529
Likes: 1
From: Iowa
Default

Post #70 pretty much covers everything
https://ls1tech.com/forums/generatio...outing-ok.html
Reply
Old Apr 13, 2014 | 11:47 PM
  #8  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

Looking at post #70
post70

Seems im guessing I would go with the 2nd layout for the
Single catch can PCV system routing LS6 Valley cover, external PCV valve

Is that what you meant WS6ICK2k by "running a LS6 style PCV system as well"??
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Apr 14, 2014 | 09:46 AM
  #9  
WS6ICK2k's Avatar
TECH Apprentice
 
Joined: Oct 2008
Posts: 332
Likes: 0
From: North Carolina
Default

Originally Posted by CubanGT
Looking at post #70 post70 Seems im guessing I would go with the 2nd layout for the Single catch can PCV system routing LS6 Valley cover, external PCV valve Is that what you meant WS6ICK2k by "running a LS6 style PCV system as well"??
Yes the ls6 valley cover option seems to be quite a bit more effective at preventing oil in the intake, even if you aren't running a catch can over the ls1 style. Are you still running the ls1 intake? The gen III external section should have specifics.
Reply
Old Apr 14, 2014 | 09:55 AM
  #10  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

im running, or going to run LS6 intake with stock TB(until I get bored and port and polish it) just got the LS1 off this weekend, so will work on getting the new intake setup and ready to go back in.
Reply
Old Apr 14, 2014 | 09:59 AM
  #11  
Jake the SSnake's Avatar
TECH Enthusiast
iTrader: (11)
 
Joined: Dec 2002
Posts: 529
Likes: 1
From: Iowa
Default

Originally Posted by CubanGT
im running, or going to run LS6 intake with stock TB(until I get bored and port and polish it) just got the LS1 off this weekend, so will work on getting the new intake setup and ready to go back in.
Sounds like you're doing quite a few mods at one time. It's going to blow your mind after driving a stock car and jumping into that many mods lol. I still remember when I did my stall and headers, it was like a whole new car!
Reply
Old Apr 14, 2014 | 10:09 AM
  #12  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

yea, since we had to tear into it thinking it was a broken flexplate, figured it was time to make some much needed mods.

And since its been atleast 3 or 4 yrs now that we drove it, anything will be a HUGE improvement.

Im trying to make sure I do things once and not have to redo later since im already in there..

I was even considering a cam now that I have the upper motor taken apart, but that will have to wait for another time and more money.
Reply
Old Apr 14, 2014 | 02:55 PM
  #13  
Russ K's Avatar
TECH Resident
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (1)
 
Joined: Apr 2006
Posts: 811
Likes: 4
From: Regina, Sask
Default

A LS6 valley pan pcv is a waste of time, you will still get oil in the intake manifold. Plus you have to cut a piece off the engine block to clear the LS6 valley pan. And I know first hand as I have a 2001 ZO6. I now have a elite engineering catch can.

So just replace the oem pcv lines that are broken on your car and install a catch can to reduce the oil that gets in the intake manifold.

Russ Kemp
Reply
Old Apr 14, 2014 | 05:15 PM
  #14  
CubanGT's Avatar
Thread Starter
TECH Regular
iTrader: (3)
 
Joined: Jan 2005
Posts: 408
Likes: 0
Default

Yea I wasn't planning on moding the block to fit the LS6 valley pan. Just if there was any mods to do away with or clean up the broken lines I have..
Reply




All times are GMT -5. The time now is 10:28 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE