New Clutch Setup
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  • 2 Post By stepchild21
2004-2007 Cadillac CTS-V Performance Mods Discussion, New Clutch Setup in Cadillac CTS-V Series Forum - 2004 - 2007; Currently have a spec 3 clutch and I can feel it getting ready to go out. I'd like to keep ...
  1. #1
    ellesshoe is offline Cadillac Owners Member
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    New Clutch Setup

    Currently have a spec 3 clutch and I can feel it getting ready to go out. I'd like to keep the drive ability as close to stock as possible and had plans on going with the LS7 setup from Lindsay. After reading a couple other threads I'm worrying it may not handle the power. Currently running a Maggie with headers, no cats, and magnaflow exhaust. The pedal is very stiff on the spec 3 which is fine for driving every now and then but it gets tiring everyday. Will the LS7 be enough or should I head in another direction? Also, Should I keep the lightweight flywheel or go stock ls7?

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  3. #2
    FuzzyLogic is offline Banned
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    Re: New Clutch Setup

    Quote Originally Posted by ellesshoe View Post
    Currently have a spec 3 clutch and I can feel it getting ready to go out. I'd like to keep the drive ability as close to stock as possible and had plans on going with the LS7 setup from Lindsay. After reading a couple other threads I'm worrying it may not handle the power. Currently running a Maggie with headers, no cats, and magnaflow exhaust. The pedal is very stiff on the spec 3 which is fine for driving every now and then but it gets tiring everyday. Will the LS7 be enough or should I head in another direction? Also, Should I keep the lightweight flywheel or go stock ls7?
    Hey, I got your PM on the LS1Tech forums, and figured I'd answer here so that other people can chime in.

    I've read a lot of stories of Maggied CTS-V owners that really like their LS7 clutches. I like mine, but I'm only putting out 422 RWHP / 383 RWTQ naturally aspirated. The clutch has excellent street manners, but it engages fairly close to the floor. Highly recommend a lightweight flywheel, although you'll probably want to improve your harmonic damper if you go all the way down to a 13 lb Fidanza like I have.

    The F1 Racing Stage 1 clutch is essentially an OEM GM LS7 clutch with a powdercoating added (useless, obviously) and their 20.4 lb chromoly steel flywheel, which I loved when I had one. If I were you, I'd try the F1 Racing LS7 MF package, which is another $70 over the Stage 1, but has significantly more holding power and claims to retain similar manners.

  4. #3
    OneFast V is offline Cadillac Owners Enthusiast
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    Re: New Clutch Setup

    I'm running an LS7 clutch with my maggie and love it so far.

  5. #4
    Junior1's Avatar
    Junior1 is offline Cadillac Owners Racer
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    Re: New Clutch Setup

    You can always step it up to the LS9 setup from the ZR1. I think Katech has a couple of different options LS9X and LS9R
    2005 cadillac cts-v.r #83 nasa st3 . 2011 escalade esv . 2011 sierra denali

  6. #5
    ellesshoe is offline Cadillac Owners Member
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    Quote Originally Posted by OneFast V
    I'm running an LS7 clutch with my maggie and love it so far.
    Are you running stock ls7 flywheel? Any idea how long the ls7 clutch has been in?

  7. #6
    NC-V is offline Cadillac Owners Fanatic
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    Re: New Clutch Setup

    The ls9 clutches from katech are very nice, but unless you're pushing 550+ rwhp I would say it is a little overkill. Don't get me wrong, it's a great, smooth, easy clutch, but it's double the cost of a quality single disc that would do the same job for you.

  8. #7
    CTSV_510's Avatar
    CTSV_510 is offline Cadillac Owners Master
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    Re: New Clutch Setup

    I have had the LS7 with my maggied V for about 6 months now...450 rwhp /430 rwtq and it is holding up no problem. I love it.

    EDIT...using stock LS7 flywheel.

  9. #8
    ellesshoe is offline Cadillac Owners Member
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    Fuzzy,

    I messaged grip-force about the clutch package you linked. They claim this setup will not work on a cts-v. Am I missing something? From what I've read it seems like the same setup as an ls

  10. #9
    OneFast V is offline Cadillac Owners Enthusiast
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    Re: New Clutch Setup

    Quote Originally Posted by ellesshoe View Post
    Are you running stock ls7 flywheel? Any idea how long the ls7 clutch has been in?
    Yes I am running the stock LS7 flywheel. I put the clutch in about 1500 miles ago. Prior to that i had the LS9X clutch but had significant problems getting it to fully disengage. I had it apart several times measuring slave throw and checking the need for spacers. I even added a spacer and replace my master but never fixed the problem. However I seem to be the only person who has had a problem with the LS9X clutch. needless to say that clutch was only in for about 4K miles before i pulled it out and put in the ls7.

  11. #10
    FuzzyLogic is offline Banned
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    Re: New Clutch Setup

    Quote Originally Posted by ellesshoe View Post
    Fuzzy,

    I messaged grip-force about the clutch package you linked. They claim this setup will not work on a cts-v. Am I missing something? From what I've read it seems like the same setup as an ls
    Who's Grip-Force? If it's a LS7 clutch, it should work just fine. Could you ask them/him to elaborate?

  12. #11
    Junior1's Avatar
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    Re: New Clutch Setup

    Luke at Lindsay sells the whole LS7 kit with everything you need. Give him a call...
    2005 cadillac cts-v.r #83 nasa st3 . 2011 escalade esv . 2011 sierra denali

  13. #12
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    Mn800r is offline Cadillac Owners Fanatic
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    Re: New Clutch Setup

    Here's the link on my LS7 install with part #'s. YOU DO NOT NEED A SPACER. Pedal is high which I HATE! Compared to the stage 3 monster I replaced. Pedal feel on the ls7 is half of the monster which is nice, Ram flywheel is same weight as the monster but the clutch is 9lbs hevier, that has changed my idle in which is not as crisp as in the video on my link. Has more of a slight mod idle know which also really sucks, if i would of known that, I would have paid the extra $600 for the stage 3 monster. Current mileage is about 1200 on the clutch, so far so good. Good luck

    http://www.cadillacforums.com/forums...h-hold-up.html

  14. #13
    stepchild21's Avatar
    stepchild21 is offline Cadillac Owners Fanatic
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    While you have it apart toss the stock slave cylinder and use the ls7. Then guaranteed you won't need a spacer and will also be sure that you have a slave that won't fail after a month or two after driving
    Mn800r and Mn800r like this.

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