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99 and 00 ls1

This is a discussion on 99 and 00 ls1 within the General Help forums, part of the LSx Technical Help Section category; So I am getting ready to buy an ls1 and i went to one of my local speed shops here ...

  1. #1
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    1995 formula

    99 and 00 ls1

    So I am getting ready to buy an ls1 and i went to one of my local speed shops here in birmingham and they told me to stay away from the 99 and 00 because of some oil consumption issues that these engines have. Have any of you guys ever heard anything like this before. If so let me know.

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    Member Bandit1's Avatar
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    all 98-02 ls1 have this problem when u get the car upgrade to a ls6 pcv system and problem solved or pick up an oil catch can

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    Member Jon7I2's Avatar
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    Navy Blue Metallic
    99 Formula M6

    As perviously stated all the ls1's burn oil somewhat. Probably some worse than others, but can be fixed w/ the above mentioned solutions.

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    Member danziger's Avatar
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    Le Mans Blue
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    My 2000 never burned any oil when it was stock...

  5. #5
    Moderator Firebirdjones's Avatar
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    Mine hasn't burned any oil either. I think what they may be referring to is the piston slap issue these engines have. Some do and some don't. If the piston is rocking back and forth in the bore, it will have an oil control problem for obvious reasons. Could be other reasons as well,,,but I have never heard of the LS6 PCV valve upgrade. Not to change the subject, but could someone explain this? Larry.

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    Member Bandit1's Avatar
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    the vacuum on the engines is to strong and sucks the oil into the intake manifold some noticeable some not nevertheless they all do it the ls6 pcv system is a better system to solve this problem my engine does it but very very little look into ur intake manifold i bet its lined with oil

  7. #7
    Member Bandit1's Avatar
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    2002 TA WS7

    some ls1's burn about a quart of oil by ur next oil change and some dont

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    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Every 2,000 miles, mine uses a quart. Can someone put me in the right direction for buying and installing a catch can? Where to buy?

  9. #9
    Junior Member REDHEATWS6's Avatar
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    RED
    2001 PONTIAC TA RAM AIR

    I have had mine since 2001, never experienced this problem.

  10. #10
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    Quote Originally Posted by REDHEATWS6 View Post
    I have had mine since 2001, never experienced this problem.
    Well, when your still running hard after 120,000 miles, its bound to use oil. Its not like I give a shit, but it would be nice to prevent it.

  11. #11
    Moderator Firebirdjones's Avatar
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    I don't have the problem either, but my mileage is pretty low and the car hasn't seen much of any abuse. But the LS6 PCV system has got my interest. I am surprised there is not a sticky with a writeup on this,,,I looked around, for something so common I thought there would be a sticky or something. I am interested in looking at the differences, pics, part numbers and what is needed for LS6 pcv system? Larry.

  12. #12
    Member Empatho's Avatar
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    I agree on the sticky, we need one
    2002 Z28 Auto (3.23 gears)
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  13. #13
    ORNGP33L 1BADDLS1's Avatar
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    Hugger Orange
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    acceptable oil consumption per GM for our motors is 2 quarts every 3,000 miles
    some caddies acceptable is 3 1/2 qts

    ls1 are "known" to have piston slap (cold start up), ticking (lifter noise), and some oil consumption

    some have all three, a combo of them... or if your lucky like me... none


    ill get working on a write up for the LS6 pcv conversion...
    one big issue is some 97-00 blocks will need to have some grinding/chunks taking out of them in order for to do the conversion (clearance reasons - LS6 valley cover wont seat)

  14. #14
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    I hope you mean grinding on the outside of the block not the inside?

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    My 2000 has no oil consumption problems and I am the original owner.

  16. #16
    We'll be back... GatorSS's Avatar
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    Light Pewter Metallic
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    107k miles and no detectable oil consumption here (I am the original owner). Perhaps it may burn 1 oz. in 5k miles, since all piston engines have some degree of oil consuption, but it is so small that the level on the dipstick remains at what appears to be the same mark through the whole 5k interval.

  17. #17
    Member Bandit1's Avatar
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    u can check our sponsers for the ls6 pcv system and the oil catch can

  18. #18
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    thanks guys. I didnt know what these guys were talking about. So that brings the next question is there a better year from 98-02? I have had my 95 for about 6 years and i don't have a lot of trouble with ls1 guys but i hear they make so much more power than you can get with an lt1.

  19. #19
    Member Bandit1's Avatar
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    best yrs r 01 and 02

  20. #20
    ORNGP33L 1BADDLS1's Avatar
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    Hugger Orange
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    Quote Originally Posted by Bandit1 View Post
    best yrs r 01 and 02


    241 heads
    possible LS6 block
    no EGR

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