"Seventh" hole in LS7 flywheel?
Cadillac
 

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds / (Old System)

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors

CadillacForums.com is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 5 of 5
Like Tree2Likes
  • 2 Post By EdmundGTP
2004-2007 Cadillac CTS-V Performance Mods Discussion, "Seventh" hole in LS7 flywheel? in Cadillac CTS-V Series Forum - 2004 - 2007; So I'm told this "seventh" hole in the LS7 flywheel needs to line up with the hole in the crank. ...
  1. #1
    Derek5.7 is online now Cadillac Owners Member
    Automobile(s): 2005 Cadillac CTS-V
    Join Date
    Apr 2013
    Posts
    61

    "Seventh" hole in LS7 flywheel?

    So I'm told this "seventh" hole in the LS7 flywheel needs to line up with the hole in the crank. Can anyone tell me if the studs on the back only allow for this particular configuration or is it possible to bolt the flywheel on with that seventh hole mismatched? And/or what IS the purpose of this "seventh" hole? Is this what allows for it to be properly balanced?

  2. Remove Advertisements
    CadillacForums.com
    Advertisements
     

  3. #2
    Twitch's Avatar
    Twitch is offline Cadillac Owners Connoisseur
    Automobile(s): '05 CTS-V, '00 SLS, 98 SLS, 89 Eldo, '80 Eldo
    Join Date
    Mar 2006
    Location
    NYC
    Age
    43
    Posts
    3,992

    Re: "Seventh" hole in LS7 flywheel?

    Don't know why it's there but I lined it up with the whole in the crank and have no vibration.

  4. #3
    Bueller's Avatar
    Bueller is offline Cadillac Owners Enthusiast
    Automobile(s): CTS-V
    Join Date
    Nov 2007
    Location
    Florida
    Posts
    572

    Re: "Seventh" hole in LS7 flywheel?

    I didn't notice a seventh hole when I installed mine. I have no idea if I happened to get it lined up or not. Mine has no vibration with only a 1 in 6 chance of it lining up.

  5. #4
    ctsv247 is offline Cadillac Owners Enthusiast
    Automobile(s): 05 Stealth Gray V
    Join Date
    Feb 2009
    Location
    Greenville sc
    Age
    43
    Posts
    647

    Re: "Seventh" hole in LS7 flywheel?

    I swear I've read every ls7 clutch thread there is and this is the first I've heard of this. The LS motors that I know of are balanced internally so the flywheel and clutch assembly are independently balanced. In other words it should make no difference.

  6. #5
    EdmundGTP is offline Cadillac Owners Enthusiast
    Automobile(s): 2007 CTS-V
    Join Date
    Aug 2009
    Location
    Tempe AZ
    Age
    32
    Posts
    613

    Re: "Seventh" hole in LS7 flywheel?

    It's what makes it an LS-7 clutch and not an LS-6............ right?
    Bueller and Dan_Gurney like this.

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.
If you do not want to register, fill this field only and the name will be used as user name for your post.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Bookmarks

Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
Read about Lincoln | Buick | Kia Forte Forum
Need products for your Cadillac? Check out your options at the links below:

custom floor mats | Cadillac Chrome and Black Chrome Wheels | window tinting