Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

Oil Burning 427?

Thread Tools
 
Search this Thread
 
Old Sep 28, 2008 | 04:37 PM
  #1  
VortechC5's Avatar
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Jan 2003
Posts: 665
Likes: 0
From: Black Forest, CO
Default Oil Burning 427?

I have a 427 that is using a quart of oil in under 500 miles. then engine has just under 1900 miles on it. This seems like an awful lot to me.

The shortblock and heads were purchased from forum vendors and everything was professionally assembled by a local shop. I am still running the Valvoline NSL oil that the vendor required during the first 5000 miles. The oil has been changed 3 times since the engine was installed.

Thoughts?
Reply
Old Sep 28, 2008 | 07:20 PM
  #2  
03 BUSA's Avatar
10 Second Club
iTrader: (25)
 
Joined: Dec 2004
Posts: 2,554
Likes: 1
From: Kannapolis, NC
Default

What are you running for PCV? That was one of my biggest problems. Had to run a vacuum pump to eliminate oil burning.
Reply
Old Sep 28, 2008 | 07:40 PM
  #3  
LS2tiger's Avatar
Launching!
 
Joined: Apr 2008
Posts: 245
Likes: 0
Default

You could be having some blow by or as the previous post stated a PVC issue. Have you ran the issue by your builder yet?
Reply
Old Sep 28, 2008 | 10:05 PM
  #4  
VortechC5's Avatar
Thread Starter
TECH Enthusiast
iTrader: (6)
 
Joined: Jan 2003
Posts: 665
Likes: 0
From: Black Forest, CO
Default

I am running 2 catch cans. One with a breather going to the valve cover and the other going from the valley pan to the intake through a fixed [FONT='Calibri','sans-serif']orifice [/FONT]PCV.

It'd be nice if it could be fixed with a different PCV setup. I have not called the builder. It is out of warranty.
Reply
Old Sep 28, 2008 | 11:28 PM
  #5  
one fast zo6's Avatar
TECH Resident
15 Year Member
iTrader: (490)
 
Joined: Jan 2008
Posts: 791
Likes: 0
From: Austin, Texas
Default parts

hi what block what pistons!!!!!!!!! please PM me on this
Reply
Old Sep 29, 2008 | 12:18 AM
  #6  
bandit1's Avatar
11 Second Club
iTrader: (12)
 
Joined: Sep 2006
Posts: 647
Likes: 0
From: Utah
Default

Having the same prob mine has about 7 to 8k on it runs strong as hell, I have added the rev xtreme catch can and it goes to the LS7 valley to catch can to intake. I have a breather on the rear of the drivers side valve cover and one on the oil fill tube as well. I dont seem to be getting alot of oil pass the catch can but still getting some. Car has great compression numbers

cyl 1 184 cyl 2 186
cyl 3 190 cyl 4 186
cyl 5 192 cyl 6 188
cyl 7 185 cyl 8 187

adding oil didnt seem to make any noticable change I have seen a bit of oil on the threads of my plugs but dont seem to know where its coming from. I have taken off the intake after installing the catch can and theres still quit a bit of oil around the intake ports when I remove the intake and this is the day after I have removed it to clean it. I took it off the next day to haved a looks see and sure enough there was oil round the ports again and I hadnt hardly driven it. Heads are LS7 an I installed the valve stem seals I think I did it right but maybe not I used a socket and made sure they sat fluch on the guide they have 3k on em. I love the way my car is running just dont like the embaressment of leaving a smoke trail when under WOT, that seems to be the only time it does it doesnt seem to burn oil at all any other times. Thoughts on this would be great not trying to hyjack just having similar probs.
Reply
Old Sep 29, 2008 | 02:14 AM
  #7  
Gun5's Avatar
TECH Addict
iTrader: (37)
 
Joined: Feb 2006
Posts: 2,714
Likes: 1
From: Tomball (H-Town), TX
Default

Originally Posted by bandit1
Having the same prob mine has about 7 to 8k on it runs strong as hell, I have added the rev xtreme catch can and it goes to the LS7 valley to catch can to intake. I have a breather on the rear of the drivers side valve cover and one on the oil fill tube as well. I dont seem to be getting alot of oil pass the catch can but still getting some. Car has great compression numbers

cyl 1 184 cyl 2 186
cyl 3 190 cyl 4 186
cyl 5 192 cyl 6 188
cyl 7 185 cyl 8 187

adding oil didnt seem to make any noticable change I have seen a bit of oil on the threads of my plugs but dont seem to know where its coming from. I have taken off the intake after installing the catch can and theres still quit a bit of oil around the intake ports when I remove the intake and this is the day after I have removed it to clean it. I took it off the next day to haved a looks see and sure enough there was oil round the ports again and I hadnt hardly driven it. Heads are LS7 an I installed the valve stem seals I think I did it right but maybe not I used a socket and made sure they sat fluch on the guide they have 3k on em. I love the way my car is running just dont like the embaressment of leaving a smoke trail when under WOT, that seems to be the only time it does it doesnt seem to burn oil at all any other times. Thoughts on this would be great not trying to hyjack just having similar probs.
gotta love the PCV systems on these cars, as long as everything's good your just gonna tear yourself to pieces trying to fix this i'v seen so many LSX cars like this (new/old) whatever
Reply
Old Sep 29, 2008 | 05:25 AM
  #8  
Jontall's Avatar
TECH Fanatic
15 Year Member
 
Joined: Sep 2005
Posts: 1,584
Likes: 23
From: NYC
Default

I run breathers in both valve cover and capped all vacuum sources-- no problems at all.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo




All times are GMT -5. The time now is 04:29 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE