What's the most HP out of an STS-V?
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Cadillac STS-V Series Forum Discussion, What's the most HP out of an STS-V? in Cadillac V-Series Forums; I'm just stock, so I'm not trying to brag, just seriously wondering, from you guys who mod yours, what's the ...
  1. #1
    carter's_sts is online now Cadillac Owners Connoisseur
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    What's the most HP out of an STS-V?

    I'm just stock, so I'm not trying to brag, just seriously wondering, from you guys who mod yours, what's the most HP anyone has gotten out of one of these?

    I just saw one on eBay (probably someone on here) claiming 573 HP. Could this really be? I thought I read in another thread that you guys were not getting much above 500?

    Pure curiosity. Thanks.

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    PGA2B's Avatar
    PGA2B is offline Cadillac Owners Connoisseur
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    Re: What's the most HP out of an STS-V?

    That is Jay's old car and that is crank not rear wheel. We have about a 22% drivetrain loss so that claim is about 447 RWHP and it dyno'd less. With a blower Ryan had the highest at 467rwhp and Tim with his turbo was the highest overall.

    Link to Jay's build.

    http://www.cadillacforums.com/forums...-thread-6.html

  4. #3
    carter's_sts is online now Cadillac Owners Connoisseur
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    Cool, thanks. That's a sweet car.

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    TimmyC is online now Cadillac Owners Connoisseur
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    Re: What's the most HP out of an STS-V?

    I hit 573/619 uncorrected at the wheels with the turbo and full exhaust. Open downpipe added 40rwhp in previous test but I did not have any more fuel to put with it so I stopped.

    I've hit 454rwhp with the blower on my 2.4" pulley.

  6. #5
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: What's the most HP out of an STS-V?

    On Speed Inc.'s dyno I did 411.61 rwhp and 471.90 rwtq. So 412/472.

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    GizmoQ's Avatar
    GizmoQ is offline The Last Good Gremlin
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    Re: What's the most HP out of an STS-V?

    Quote Originally Posted by TimmyC View Post
    I hit 573/619 uncorrected at the wheels with the turbo and full exhaust. Open downpipe added 40rwhp in previous test but I did not have any more fuel to put with it so I stopped.

    I've hit 454rwhp with the blower on my 2.4" pulley.
    The turbo was an impressive build.
    parkeraire and parkeraire like this.
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 501rwhp and 486TQ at 6000RPM so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



    2013 St Louis Region SCCA Solo SSM Class Champion
    Texas Mile Record Holder: Street Legal XLR @ 159.5MPH
    ECTA LSR Record Holder: 4.2-5.0L Blown Gas Modified Sports Car

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    scott9001 is offline Cadillac Owners Fanatic
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    Re: What's the most HP out of an STS-V?

    Is there a link to the turbo build?

  9. #8
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: What's the most HP out of an STS-V?


  10. #9
    PORGUY is offline Cadillac Owners Member
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    Re: What's the most HP out of an STS-V?

    So how do those numbers compare with a stock CTS V second generation?
    The cars are about the same curb weight with similiar transmissions...
    I have an 05 CTS V and have been considering getting an STS V if it can generate the same hp numbers as a new CTS V,especially since I can get one for less than HALF of a new one....
    Honestly I like the way the STS V looks better than mine.....

  11. #10
    boomys10 is offline Cadillac Owners Enthusiast
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    Re: What's the most HP out of an STS-V?

    mine is sitting at 426 at wheels VERY CONSERVATIVE currently. only thing adjusted was air/fuel for smaller pulley and timmyc intake. its 426hp/420trq. i wanna know how that guy got 471 trq and 411hp, i want that trq!! lol.

  12. #11
    1madstsv's Avatar
    1madstsv is offline Cadillac Owners Connoisseur
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    Re: What's the most HP out of an STS-V?

    A Ctsv 2 is more like 800-850 lbs lighter than a Stsv. And make 440-470 Rwhp stock. And run 12.6-11.9 stock with a good driver. My car stock made 365 Rwhp and ran 13.0 after mods 467 Rwhp and 12.1 @ 4670lbs with me in the car I'm 180 lbs. for the same money I had in this car I could have had an 11.5 our faster Ctsv. But I sold my 06 Stsv and went and got an 08 Stsv I just like them better than the Ctsv and I have a corvette for when I need to go really fast lol.

  13. #12
    TimmyC is online now Cadillac Owners Connoisseur
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    Re: What's the most HP out of an STS-V?

    The CTS-V is lighter, but nowhere near 800lbs. Google shows the curb weight at ~4250lbs for the CTS-V and 4300lbs for the STS-V. My STS-V weighed 4480 with a full tank of gas, me, and 30lbs of crap in the trunk.

    The CTS-V has more potential than the STS-V because it has a bigger motor, has a better supercharger, and there are more aftermarket parts, but it costs 20k more right off the bat. For around 2k in my parts you can get around 450rwhp and 440rwtq.

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    1madstsv's Avatar
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    Re: What's the most HP out of an STS-V?

    Then I need to reweigh my new one cause at 4670 it's a fat big.

  15. #14
    boomys10 is offline Cadillac Owners Enthusiast
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    Re: What's the most HP out of an STS-V?

    when i put mine on the scale is came in at 4320 with a half tank of gas. id guess the other half tank would add MAYBE 100lbs on the high side. so your coming in about 200 higher than mine.

  16. #15
    GizmoQ's Avatar
    GizmoQ is offline The Last Good Gremlin
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    Re: What's the most HP out of an STS-V?

    Quote Originally Posted by 1madstsv View Post
    Then I need to reweigh my new one cause at 4670 it's a fat big.
    Heavier wheels and tire

    junk in the trunk

    inflated head

    ???????

    ???


    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 501rwhp and 486TQ at 6000RPM so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



    2013 St Louis Region SCCA Solo SSM Class Champion
    Texas Mile Record Holder: Street Legal XLR @ 159.5MPH
    ECTA LSR Record Holder: 4.2-5.0L Blown Gas Modified Sports Car

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