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Diameter for Chevy/GM TO Bearing

Discussion in 'Early CJ5 and CJ6 Tech' started by Warloch, Jun 20, 2011.

  1. Jun 20, 2011
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
    Messages:
    5,469
    Guys - I ordered a short shaft kit for a T18 - I thougth it was supposed to have the front bearing retainer machined for a GM TO, but that's not what the site is saying now (don't know if it's me or they changed it).

    Doing some eyeball fitting, and it seems the TO is not GM as it's larger than the bearing retainers I have for the other swaps I do.

    Any one have a handy measurement of what this needs to be? All my TO stock is burried (that's what I get for having 2 builds in the shop at once).
     
    Warloch, Jun 20, 2011
    #1
  2. Jun 20, 2011
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,517
    I'm measuring a new V6 TO brg I broke
    I'm getting a bore of 1-3/8" ID
    oops..never mind
    you want the larger bore size
     
    jpflat2a, Jun 20, 2011
    #2
  3. Jun 20, 2011
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    The V6 is good to know too. I have a bearing retainer for a T-14 that I measured against, which is why I am wondering about the GM one. Gonna see if I can crawl under a bench and measure an SM465 too.
     
    Warloch, Jun 20, 2011
    #3
  4. Jun 20, 2011
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    Diameter measures 1.370" and length of area where the to bearing rides is 2.330. Oal from face of transmission face minus gasket is 3.175". This is with cheap digital calipers and measured from a stock gm BW T-10 front bearing retainer. May be a few thousandths off but should give you a good idea. Oal diameter where it fits into the bellhousing is 4.684" . Hope this helps some.
     
    nickmil, Jun 20, 2011
    #4
  5. Jun 20, 2011
    Mjragan

    Mjragan Member

    socal-Simi Valley
    Joined:
    Mar 27, 2010
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    Yep! thats what i've got, 1.370" dia. the stock TO bearing I.D. is 1.380". Thats from a T-86. The length from the face of the trans is 3.350" and the bellhousing is 4.685" dia. I'm in the middle of a T-18 swap also, I machined the ford bearing retainer to the specs from the T-86 and so far so good. Hope this helps Mike.
     
    Last edited: Jun 20, 2011
    Mjragan, Jun 20, 2011
    #5
  6. Jun 20, 2011
    Warloch

    Warloch Did you say Flattie??? Staff Member

    Falcon, CO
    Joined:
    Mar 4, 2003
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    5,469
    That confirms that I didn't get the bearing retainer I thought I was getting. Guess I'll just take this one down and get it machined. I opened up the BH to take the retainer, and I want to keep things consistant as I know I'll be working on it.

    Thanks guys.
     
    Warloch, Jun 20, 2011
    #6
  7. Jun 21, 2011
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
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    5,922
    Yep on our T-15 install to the 225V6, I had the T-15 bearing retainer cut down to fit the T-86 T.O. bearing to keep the clutch pieces stock. Works great.
     
    Walt Couch, Jun 21, 2011
    #7
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