Register now to get rid of these ads!

Technical Modifying a clutch fork? Bad idea?

Discussion in 'The Hokey Ass Message Board' started by deto, Sep 29, 2015.

  1. deto
    Joined: Jun 26, 2010
    Posts: 2,619

    deto
    Member

    Hamb crew,

    So on my build I am running out of real estate by the clutch fork. My driver side header collector is too close to fit the slave cylinder inline with the clutch fork.

    Here's my question, can I take the bend out of the fork and move the contact point for the clutch rod back?

    Making the arm straight will buy me plenty of clearance for the slave cylinder to squeeze in there.

    I will keep it equidistant from the throw out bearing so leverage isn't effected, but I want to make sure I'm not missing something.

    Welding and fab work isn't a concern, I just want to make sure I'm not missing something obvious.

    Thanks guys.

    1443580977344.jpg 1443580986524.jpg 1443580995319.jpg
     
  2. GearheadsQCE
    Joined: Mar 23, 2011
    Posts: 3,670

    GearheadsQCE
    Alliance Vendor

  3. bobss396
    Joined: Aug 27, 2008
    Posts: 18,736

    bobss396
    Member

    Ugh... I see a pull-type slave in your future. This is the push-type I'm using in my Ford. Maybe getting the slave more towards the engine is your salvation?
     

    Attached Files:

  4. dirtracer06
    Joined: Sep 29, 2009
    Posts: 198

    dirtracer06
    Member

    I cant till ya if its a good idea or not, but i cut mine off just past the hole on the top and welded a large square nut to the top, moved the slave up and in, no problems so far....
     
  5. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    GM made like 491 different clutch forks. Some are flatter than others.

    Your's is curved forward. Perhaps a flatter one would give you more space.
     
  6. Rex_A_Lott
    Joined: Feb 5, 2007
    Posts: 1,158

    Rex_A_Lott
    Member

    You can also just use a straight fork like Bobs396 shows above. I'm thinking that was a truck part, but not 100% sure about that. Good Luck
     
  7. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 6,502

    57JoeFoMoPar
    Member

    I see no issue with cutting, welding and straightening the clutch fork. The only issue I would be especially mindful of is that you keep the overall length of the clutch arm the same as it is from the factory. Lengthening or shortening the length of the fork could potentially change the throw of the clutch so that it either doesn't fully disengage or bottoms out. If you keep that in mind, you should be just fine
     
    ace5043 and loudbang like this.
  8. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    1984-1992 Camaro.
    [​IMG]
     
    Rex_A_Lott and 57JoeFoMoPar like this.
  9. deto
    Joined: Jun 26, 2010
    Posts: 2,619

    deto
    Member


    This looks good. I'm gonna see where I can buy one
     
  10. 57JoeFoMoPar
    Joined: Sep 14, 2004
    Posts: 6,502

    57JoeFoMoPar
    Member

    Rockauto.com has them listed for ~$19
     
    gimpyshotrods likes this.
  11. deto
    Joined: Jun 26, 2010
    Posts: 2,619

    deto
    Member

    Awesome!
     
  12. bobss396
    Joined: Aug 27, 2008
    Posts: 18,736

    bobss396
    Member

    I thought the bell housing was off a truck, decoded it.. Tri-5 Chevy. Pretty sure the fork is a C20-ish truck part, looks like forged steel.
     
  13. Don's Hot Rods
    Joined: Oct 7, 2005
    Posts: 8,319

    Don's Hot Rods
    Member
    from florida

    I don't have any pictures, but my 27 has a chopped off arm, just like you are wanting to do. I also had no room, so I cut the end off, built a mount so a bolt could slip down through it, and then used a rod end on the end of my hydraulic cylinder. Been on there for over 25 years and works great. On a mechanical clutch setup it might be a little stiff, due to the reduced leverage, but a hydraulic cylinder will push it just fine, and I am running a high performance pressure plate.

    Don
     
  14. Pete
    Joined: Mar 8, 2001
    Posts: 4,786

    Pete
    Member

    You'll be fine, pie cut the fork you have, straighten it, re weld. If it doesn't work.... No harm no foul.
     
  15. wbrw32
    Joined: Oct 27, 2007
    Posts: 7,314

    wbrw32
    Member

    wouldn't it just be simpler to just get the proper set of headers????"
     
    hotroddon likes this.
  16. striper
    Joined: Mar 22, 2005
    Posts: 4,498

    striper
    Member

    That's an easy fix. I modified a 3 sp Falcon fork and manufactured a new pivot for it on the opposite side of the bell housing to activate a GM clutch behind my nailhead. Just need to make sure the ratio of the throw is right.
     
  17. flatheadpete
    Joined: Oct 29, 2003
    Posts: 10,668

    flatheadpete
    Member
    from Burton, MI

    That's what I was thinking......
     
  18. bobss396
    Joined: Aug 27, 2008
    Posts: 18,736

    bobss396
    Member

    Lots of luck returning a set of used headers. There is also a Nova fork that exits the bell at closer to the 7 o'crotch position. Which would require some vivisection to his ****ter shield.
     
  19. Nostrebor
    Joined: Jun 25, 2014
    Posts: 1,329

    Nostrebor
    Member

    Not on the car he is building. Deto has sourced a set of headers that clear his steering, which is all kinds of in the way on the 49-54 Chevy cars. Tweaking the clucth fork is much simpler than making another set of headers work around that wonky steering setup.
     
  20. gimpyshotrods
    Joined: May 20, 2009
    Posts: 24,516

    gimpyshotrods
    ALLIANCE MEMBER

    ^^This.
     
  21. 54fierro
    Joined: Jul 6, 2006
    Posts: 493

    54fierro
    Member
    from san diego

    Cant help you on the fork but if you go this route I would consider fabbing up a little heat shield. I have heard of slave cylinders close to the exhaust causing headaches. Cesar
     
  22. deto
    Joined: Jun 26, 2010
    Posts: 2,619

    deto
    Member

    Look up headers for 49-54 chevys. The Sanderson are ugly and that's the only company making sbc headers. These shorty camaro headers are a better option for what I'm trying to accomplish
     
  23. deto
    Joined: Jun 26, 2010
    Posts: 2,619

    deto
    Member


    Yep. Making a stainless heat shield for it
     
  24. Grudge
    Joined: Jun 26, 2008
    Posts: 436

    Grudge
    Member

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.