V2 Horsepower before supercharging
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2009-2014 Cadillac CTS-V General Discussion Discussion, V2 Horsepower before supercharging in Cadillac CTS-V Series Forum - 2009-2014; This may sound like a silly question (and actually irrelevant), but does anyone know (or have an estimate) of what ...
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    darjae is offline Cadillac Owners Fanatic
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    V2 Horsepower before supercharging

    This may sound like a silly question (and actually irrelevant), but does anyone know (or have an estimate) of what the LSA would put out if the supercharger wasn't there. I know the engine started as an LS3, but what other mods were made? Is it a as simple as 430 from the LS3, plus the supercharger? Can't wait for mine (TPW: 11/24/08).

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    robthide is offline Cadillac Owners Member
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    Re: V2 Horsepower before supercharging

    Quote Originally Posted by darjae View Post
    This may sound like a silly question (and actually irrelevant), but does anyone know (or have an estimate) of what the LSA would put out if the supercharger wasn't there. I know the engine started as an LS3, but what other mods were made? Is it a as simple as 430 from the LS3, plus the supercharger? Can't wait for mine (TPW: 11/24/08).




    Most likely it would have less power as to the fact that it uses lower compression pistons.

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    verbs is offline Cadillac Owners Enthusiast
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    Re: V2 Horsepower before supercharging

    Quote Originally Posted by robthide View Post
    Most likely it would have less power as to the fact that it uses lower compression pistons.
    Agreed. It's probably around 405hp give or take a few hp due to the roughly 2 point compression drop. No other mods have been made that I'm aware of.

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    thebigjimsho's Avatar
    thebigjimsho is offline Cadillac Owners 10000+ Posts
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    Re: V2 Horsepower before supercharging

    401.7 bhp

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    CVP33's Avatar
    CVP33 is offline Cadillac Owners Master
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    Re: V2 Horsepower before supercharging

    Quote Originally Posted by thebigjimsho View Post
    401.7 bhp
    401.742045 to be exact. BigJim always rounds.

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    Hogg is offline Cadillac Owners Member
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    Re: V2 Horsepower before supercharging

    LS3 10.7:1
    LSA 9.1:1

    peace
    Hog

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    darjae is offline Cadillac Owners Fanatic
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    So, utilizing a calculator I found on the web (I can't post it yet, 2nd post),

    The horsepower before supercharging (due to Compression Ratio change) would be 412.

    ....Still 12 higher than my '05 GTO when it was stock.

    Again, not really relevant, just wondering. Still "patiently" waiting for mine. TPW: 11/24/08 so I'm hoping for a mid December delivery.

    I'm going to the Houston Autorama on the day after Thanksgiving hoping to see one to sate me for at least a little while.... (even though I know it will drive me crazy).

    darjae

    if you want to know the site, send me a message and I'll forward it to you.....can't post it to the forum yet

  9. #8
    Silverspeed is offline Cadillac Owners Member
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    Re: V2 Horsepower before supercharging

    Quote Originally Posted by darjae View Post
    So, utilizing a calculator I found on the web (I can't post it yet, 2nd post),

    The horsepower before supercharging (due to Compression Ratio change) would be 412.

    ....Still 12 higher than my '05 GTO when it was stock.
    This is assuming that it uses the exact same heads, cam, intake.....etc, which I seriously doubt. Truth is no one knows what the power of the LSA is non supercharged, because one has never been built.

  10. #9
    Hogg is offline Cadillac Owners Member
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    Re: V2 Horsepower before supercharging

    Lets just say that GM isnt really into making a bunch of different parts that arent needed. The similarities are striking. There is some small differences in camshafts.

    LSA t-body points forward to the drivers side at about 35º
    LS3 points straight forward
    LS9 is mounted offset towards the drivers side, and is slightly angled towards the passenger side and upwards.

    Intake manifolds are different due to the following differences.
    LSA single element intercooler
    LS3 no intercooler
    LS9 dual element intercooler



    GM has built a naturally aspirated LSA, they just havent released it to the public, YET. It will be seen in the upcomming Camaro, RPO L99.

    peace
    Hog

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