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98-02 F Body Engine Differences?

This is a discussion on 98-02 F Body Engine Differences? within the Camaro / SS forums, part of the Vehicle Specific category; I read somewhere there were different cams, intakes exhaust manifold designs through the 1998-2002 Camaro z28/SS models From what i ...

  1. #1
    Lead Foot mammoth713's Avatar
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    98-02 F Body Engine Differences?

    I read somewhere there were different cams, intakes exhaust manifold designs through the 1998-2002 Camaro z28/SS models

    From what i remember (please correct me if I'm wrong):


    1998:
    *First year LS1 Introduced

    1999:
    *Nothing

    2000:
    *Breather attached to intake Lid
    *New Exhaust manifold design with better flow

    2001:
    *LS6 Intake Manifold
    *Less Aggressive Cam

    2002:
    *Nothing

    This leads to my next question:

    I have a 2000 Z28 with SLP intake Lid and LM1 Catback..
    *Would I gain about 15HP from an LS6 Intake?
    *Would I need a tune?
    *Can I use my stock LS1 fuel rails, injectors, whatever else?
    *Does the EGR hose hook up the same to the LS6 Manifold?
    *I would need an LS6 Throttle Body also?
    *Is this fairly easy to swap out, or would I need to pay a shop?

    Thanks

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
    Sadly now demodded :(

    *sigh* Nobody checks the stickies anymore *sigh*

    All the basic Camaro stickies combined into one thread

    Pick the "Differences between the years" section...

    LS6 intake has no provisions for an EGR...

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    Quote Originally Posted by mammoth713 View Post
    I read somewhere there were different cams, intakes exhaust manifold designs through the 1998-2002 Camaro z28/SS models

    From what i remember (please correct me if I'm wrong):


    1998:
    *First year LS1 Introduced

    1999:
    *Nothing

    2000:
    *Breather attached to intake Lid
    *New Exhaust manifold design with better flow

    2001:
    *LS6 Intake Manifold
    *Less Aggressive Cam

    2002:
    *Nothing

    This leads to my next question:

    I have a 2000 Z28 with SLP intake Lid and LM1 Catback..
    *Would I gain about 15HP from an LS6 Intake?
    *Would I need a tune?
    *Can I use my stock LS1 fuel rails, injectors, whatever else?
    *Does the EGR hose hook up the same to the LS6 Manifold?
    *I would need an LS6 Throttle Body also?
    *Is this fairly easy to swap out, or would I need to pay a shop?

    Thanks
    - I don't think you'll get 15 hp with just the intake. Rather it allows better upper RPM potential. They only gave 01/02 a 5hp increase.

    - A tune never hurts but IIRC isn't necessary for just the intake.

    - Yes.

    - See above post.

    - No.

    - Easy enough if you know what you're doing.

  4. #4
    Lead Foot mammoth713's Avatar
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    Quote Originally Posted by 67CamaroRSSS View Post
    - I don't think you'll get 15 hp with just the intake. Rather it allows better upper RPM potential. They only gave 01/02 a 5hp increase.

    - A tune never hurts but IIRC isn't necessary for just the intake.

    - Yes.

    - See above post.

    - No.

    - Easy enough if you know what you're doing.
    Actually I did read the sticky and it was great information, however I was a bit confused on the camshafts it talked about

    QUOTE FROM STICKY
    {

    1998 F-Body
    14. 1998-2000 cars had a larger cam than the 01-02 cars

    2000 F-Body
    2. 2000 continued use of LS1 Intake, EGR, smaller cam, and 26 lb fuel injectors

    }


    when it says "smaller" is it the same cam that's in the 1998-99 or 01-02?
    Last edited by mammoth713; 12-03-2010 at 11:40 AM.

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    LSX whore allbaugh_04's Avatar
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    I can post the exact specs when I get home if you are really interested, but I'm sure you can find them online.

    The differences are very small in the grinds of the cam.

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    Firebird Encyclopedia 9T8W66's Avatar
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    Off the top of my head

    1998-2000 F-body cam
    198/209 .500/.500 119.5 LSA

    2001-2004 (all LS1)
    196/207 .469/.474 116 LSA

    28# injectors were used 1998 2001-2004
    26# injectors were used 1999-2000

    The cam change was due more to the removal of the EGR system then anything else. As the new Passenger car intake (LS6) would not have any provisions for EGR.
    Craig
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    Visualize°Design°Create SSwt00SS's Avatar
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    '12 Silver SS 1SS
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    '98 - mid/late 2000 cars had 803/853 casting heads

    mid/late 2000-2002 cars had 241 casting heads

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    Lead Foot mammoth713's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    Off the top of my head

    1998-2000 F-body cam
    198/209 .500/.500 119.5 LSA

    2001-2004 (all LS1)
    196/207 .469/.474 116 LSA

    28# injectors were used 1998 2001-2004
    26# injectors were used 1999-2000

    The cam change was due more to the removal of the EGR system then anything else. As the new Passenger car intake (LS6) would not have any provisions for EGR.
    Thanks! So, the sticky on the 2000 year is a typo saying "smaller cam"??


    Anyway, so my 2000 LS1 theoretically would benefit more from a LS6 intake than the 01-02 did (because they had a slightly smaller cam)?

    -If I was to replace my LS1 Intake with a LS6 one, how do I disconnect the EGR stuff?
    -Why did GM do this, and still not have any issues with emissions?
    -I've read other members getting maybe 10-15BHP, is this true?

  9. #9
    Senior Member bluehawk2000's Avatar
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    Cam specs and differences right here http://www.smokemup.com/tech/ls1.php

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    Senior Member bluehawk2000's Avatar
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    Quote Originally Posted by mammoth713 View Post
    Thanks! So, the sticky on the 2000 year is a typo saying "smaller cam"??


    Anyway, so my 2000 LS1 theoretically would benefit more from a LS6 intake than the 01-02 did (because they had a slightly smaller cam)?

    -If I was to replace my LS1 Intake with a LS6 one, how do I disconnect the EGR stuff?
    -Why did GM do this, and still not have any issues with emissions?
    -I've read other members getting maybe 10-15BHP, is this true?
    And I am wanting to say yes because with a slightly bigger cam and adding the same intake would give you a little more power.

  11. #11
    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by mammoth713 View Post
    Anyway, so my 2000 LS1 theoretically would benefit more from a LS6 intake than the 01-02 did (because they had a slightly smaller cam)?

    -Why did GM do this, and still not have any issues with emissions?
    -I've read other members getting maybe 10-15BHP, is this true?
    First, yes the earlier cars should benefit more from the LS6 intake, they have the better camshaft. You get the best of both.

    Why they did it?? Don't know really. But evidently the EGR wasn't a big player and didn't make much difference in emissions. At the same time the smaller camshaft was used, but that doesn't explain how the Z06 corvettes got away with no EGR on the LS6 intakes considering they had an even larger cam than any of the F-bodies did, hmmm Sure makes ya wonder though.

    I don't beleive the HP claim unless you are talking about a larger cam, compression, cylinder heads, type of build.
    Putting the LS6 intake on a relatively stock car yields very little. I did it and didn't find much of anything.

    Running the LS6 cam in my wifes 2000 SS with the LS1 intake, tuned and alot of track time. Installed the LS6 intake later, found I needed to change the WOT AFR just a tad to get it where it was before. (added a pinch)
    But at the track I saw really no difference.

  12. #12
    Lead Foot mammoth713's Avatar
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    Quote Originally Posted by bluehawk2000 View Post
    Cam specs and differences right here http://www.smokemup.com/tech/ls1.php
    yeah i'm a bit confused which one is right, i've found 3 different sources and none of them are the same (close tho):

    ++++++++++++++++++++++++++++++++++++++different forum STICKY
    1998-2000
    202/210 .496"/.496" 116 LSA

    2001-2002
    198/197 .478"/.478" 115 LSA
    ++++++++++++++++++++++++++++++++++++++diff forum
    1998-2000
    198.86/209.25 .498"/.497" 119.45LSA

    2001-2002
    196.37/208.72 .464"/.479" 115.92LSA
    ++++++++++++++++++++++++++++++++++++++smokemup.com
    1998 - 2000 Fbody
    202/210 0.496"/0.496" 116 LSA

    2001 - 2002 Fbody
    197/207 0.467"/0.479" 116 LSA
    Last edited by mammoth713; 12-04-2010 at 01:11 PM.

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    Senior Member bluehawk2000's Avatar
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    All I know is that the 98-00 is slightly bigger than the 01-02 ls1.

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    Your dealership guy konigandy6's Avatar
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    From GM

    2002 LS1:

    Camshaft End Play
    0.025-0.305 mm
    0.001-0.012 in

    Camshaft Journal Diameter
    54.99-55.04 mm
    2.164-2.166 in

    Camshaft Bearing Diameter
    55.063-55.088 mm
    2.1678-2.1688 in

    Camshaft Journal-to-Bearing Clearance
    0.023-0.098 mm
    0.0009-0.0038 in

    Camshaft Journal Diameter Out-of-Round
    0.025 mm
    0.001 in

    Camshaft Lobe Lift - Intake
    6.96 mm
    0.274 in

    Camshaft Lobe Lift - Exhaust
    7.13 mm
    0.281 in

    Camshaft Runout - Measured at the Intermediate Journals
    0.05 mm
    0.002 in

  15. #15
    Your dealership guy konigandy6's Avatar
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    Velocity Yellow
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    98 LS1

    Camshaft End Play
    0.025-0.305 mm
    0.001-0.012 in

    Camshaft Journal Diameter
    54.99-55.04 mm
    2.164-2.166 in

    Camshaft Bearing Diameter
    55.063-55.088 mm
    2.1678-2.1688 in

    Camshaft Journal-to-Bearing Clearance
    0.023-0.098 mm
    0.0009-0.0038 in

    Camshaft Journal Diameter Out-of-Round
    0.025 mm
    0.001 in

    Camshaft Lobe Lift (Intake)
    7.43 mm
    0.292 in

    Camshaft Lobe Lift (Exhaust)
    7.43 mm
    0.292 in

    Camshaft Runout (Measured at the Intermediate Journals)
    0.05 mm
    0.002 in

  16. #16
    Lead Foot mammoth713's Avatar
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    Quote Originally Posted by konigandy6 View Post
    From GM

    2002 LS1:

    Camshaft End Play
    0.025-0.305 mm
    0.001-0.012 in

    Camshaft Journal Diameter
    54.99-55.04 mm
    2.164-2.166 in

    Camshaft Bearing Diameter
    55.063-55.088 mm
    2.1678-2.1688 in

    Camshaft Journal-to-Bearing Clearance
    0.023-0.098 mm
    0.0009-0.0038 in

    Camshaft Journal Diameter Out-of-Round
    0.025 mm
    0.001 in

    Camshaft Lobe Lift - Intake
    6.96 mm
    0.274 in

    Camshaft Lobe Lift - Exhaust
    7.13 mm
    0.281 in

    Camshaft Runout - Measured at the Intermediate Journals
    0.05 mm
    0.002 in
    Quote Originally Posted by konigandy6 View Post
    98 LS1

    Camshaft End Play
    0.025-0.305 mm
    0.001-0.012 in

    Camshaft Journal Diameter
    54.99-55.04 mm
    2.164-2.166 in

    Camshaft Bearing Diameter
    55.063-55.088 mm
    2.1678-2.1688 in

    Camshaft Journal-to-Bearing Clearance
    0.023-0.098 mm
    0.0009-0.0038 in

    Camshaft Journal Diameter Out-of-Round
    0.025 mm
    0.001 in

    Camshaft Lobe Lift (Intake)
    7.43 mm
    0.292 in

    Camshaft Lobe Lift (Exhaust)
    7.43 mm
    0.292 in

    Camshaft Runout (Measured at the Intermediate Journals)
    0.05 mm
    0.002 in
    thanks for the information.. where did you find that?


    So, in short my gains from installing an LS6 intake on my car would be 10hp at best (given i have only modded w/ slp lid and slp LM1 catback..)??

  17. #17
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by mammoth713 View Post
    thanks for the information.. where did you find that?


    So, in short my gains from installing an LS6 intake on my car would be 10hp at best (given i have only modded w/ slp lid and slp LM1 catback..)??
    From the GM service information database. Dealership service employee perk

    2008 Z06 - Velocity Yellow - OEM

    2017 Silverado Z71 5.3 - OEM

    2002 Z06 - Electron Blue Metallic - D1 - E85 - 701 rwhp 687 rwtq **sold**

    2002 Z28: M6 NBM - cam and boltons - 396rwhp 357 rwtq **sold**

  18. #18
    Lead Foot mammoth713's Avatar
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    Quote Originally Posted by konigandy6 View Post
    From the GM service information database. Dealership service employee perk
    wait wait wait, i'm so confused. according to GM the lifts for intake/exhaust are only .292"??? all the other sources are saying atleast .496"

    am I reading this wrong?

  19. #19
    Firebird Encyclopedia 9T8W66's Avatar
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    Quote Originally Posted by mammoth713 View Post
    wait wait wait, i'm so confused. according to GM the lifts for intake/exhaust are only .292"??? all the other sources are saying atleast .496"

    am I reading this wrong?
    Dude that's the Lobe lift

    Anyway I can shed some lite on the non EGR equipped LS1's
    All `97-`00 Corvettes and all `01-up LS's use a cam with a 116/117 or tighter LSA
    The tighter LSA bleeds more exhaust gas into the intake charge during the overlap period and negates the use of an EGR valve for proper emissions.
    The `98-00 F-body cam has a 119.5 LSA and is specific for those cars.
    The Corvettes of the same Vintage use specific cams aswell (with a tighter LSA).
    Last edited by 9T8W66; 12-05-2010 at 07:46 AM.

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
    Sadly now demodded :(

    .292 lobe lift x 1.7 rocker ratio = .496 lift at the valve...

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