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F-body LS1 differences from Vette LS1?

This is a discussion on F-body LS1 differences from Vette LS1? within the General Help forums, part of the LSx Technical Help Section category; I heard that the f bodies have a different cam. This makes the f bodies detuned? I'm not very knowledgeable ...

  1. #1
    Rice Hungry GottaHaveLS1's Avatar
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    F-body LS1 differences from Vette LS1?

    I heard that the f bodies have a different cam. This makes the f bodies detuned? I'm not very knowledgeable about cams. Can anyone explain the differences if this is true?
    1999 Trans Am M6
    SLP Short Throw, Lid and CAI, BMR STB and SFC, UMI PHB, Pacesetter LT's and ORY, Magnaflow Catback, DMH 3" E-Cutout, LS7 Clutch, Motive 4.10, 160 T-Stat, MSD, !AIR, !EGR, 17x9.5 Chrome C6's wrapped in Hankook 275/40/17

    Tuned at Mongillo Motors in New Haven, CT

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    Visualize°Design°Create SSwt00SS's Avatar
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    Quote Originally Posted by GottaHaveLS1 View Post
    I heard that the f bodies have a different cam. This makes the f bodies detuned? I'm not very knowledgeable about cams. Can anyone explain the differences if this is true?
    yes, it's true. different years had different cams. here you go...

    http://www.smokemup.com/tech/ls1.php

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    I don't think there was too much difference in the actual motor. But the reason the vette HP was rated higher was because the exhaust manifolds on the vette flow way better than the F-body. Actually the whole exhaust flows better!!!

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    Rollo Tomassee AKIRA's Avatar
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    Well isnt it true dual?

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    Rice Hungry GottaHaveLS1's Avatar
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    yes it's true dual and probably flows better as well. I've heard that the cam is different too.

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    Firebird Encyclopedia 9T8W66's Avatar
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    Here are the 2 cams specs plus a couple extra to clear things up.
    Dur, Lift, Lobe spread
    F-body`98-`00
    198/209 500/500 119.5
    Corvette `97-`99
    199/207 472/479 117
    `00 Corvette
    198/209 500/500 115.5
    All LS1 cars `01 -up
    196/207 467/479 116
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    Member SSpdDmon's Avatar
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    The timing tables in the Vette are more aggressive and the AFR is leaned out a little more from the factory too. It's a combination of better flow and a "hotter" tune for the '01+ cars. Not to mention...the ~200lb weight difference.

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    Rice Hungry GottaHaveLS1's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    Here are the 2 cams specs plus a couple extra to clear things up.
    Dur, Lift, Lobe spread
    F-body`98-`00
    198/209 500/500 119.5
    Corvette `97-`99
    199/207 472/479 117
    `00 Corvette
    198/209 500/500 115.5
    All LS1 cars `01 -up
    196/207 467/479 116
    I don't really know much about "internal engine" but i'm assuming that dur, lift, lobe spread has something to do with intake and exhaust, etc.
    Can someone explain to me what numbers or specs on a cam make it more aggressive or generate more power?

  9. #9
    Member SSpdDmon's Avatar
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    SOM
    '01 Camaro SS

    It's very complicated. You can start reading here if you'd like...

    http://www.ls1tech.com/forums/showthread.php?t=327734

    Of those cams, the '00 Vette cam looks to be the most powerful. However, they're still stock cams. A very common aftermarket LS1 cam has 224/224 intake/exhaust duration and .581/.581 intake/exhaust valve lift with the stock 1.7:1 rocker ratio. It's usually ground on a 112 or 114 LSA. That's still a relatively mild cam. Mine's a little more aggressive with a 232/238 duration and ~.600 lift on a 112 LSA.

  10. #10
    Think Spring..... 4get gto's Avatar
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    Quote Originally Posted by 9T8W66 View Post
    Here are the 2 cams specs plus a couple extra to clear things up.
    Dur, Lift, Lobe spread
    F-body`98-`00
    198/209 500/500 119.5
    Corvette `97-`99
    199/207 472/479 117
    `00 Corvette
    198/209 500/500 115.5
    All LS1 cars `01 -up
    196/207 467/479 116
    Am I looking at that right ?

    Looks as though the 98 -00 Fbody LS-1 have one of the better cam's.

    Even in the link above seems to say the same...........

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