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T-5 input shaft and pilot bearing

Discussion in 'The Hokey Ass Message Board' started by scrap metal 48, Nov 17, 2013.

  1. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    Is the part of the input shaft that goes into the pilot bearing different diameter between the T-5 and Saginaw 3 and 4 speeds?? OR are there different SBC pilot bearings for T-5's and Saginaw transmissions??? Thanks in advance...
     
  2. KENDEUCE
    Joined: Jan 14, 2010
    Posts: 332

    KENDEUCE
    Member

    I see on Jegs website that there are different diameters for Chevy. But I also have never seen different brgs for sbc. Could you have a Ford tranny? They have different dias.
     
  3. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    I replaced a 3spd Saginaw with an 89 S10 5spd and now have a vibration in 5th gear.. I'm trying to determine if it is pilot bearing(which I did not replace), drive shaft or transmission...
     
  4. KENDEUCE
    Joined: Jan 14, 2010
    Posts: 332

    KENDEUCE
    Member

    Vibrations can be a bitch to find...........don't underestimate anything.
     
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  5. Snarl
    Joined: Feb 16, 2007
    Posts: 1,640

    Snarl
    Member

    Chevy T5 is the same as any older 3 or 4 speed.

    Ford is the one that used a couple different diameters.

    Vibrations going down the road are not pilot bushing related. If it's "jumpy" when launching, that could be pilot bushing related.
     
  6. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    Thanks Snarl, that helps a lot...
     
  7. brokenspoke
    Joined: Jul 26, 2005
    Posts: 2,874

    brokenspoke
    Member

    The T-5 imput shaft is metric.......
     
  8. Snarl
    Joined: Feb 16, 2007
    Posts: 1,640

    Snarl
    Member

    And yet it fits a standard Chevy pilot bushing just fine.
     
  9. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    Are there different SBC pilot bearing part numbers for T-5 and Saginaw transmissions or are they the same.. That's what I can't seem to get a definite answer on.. I don't want to take everything apart if they are the same bearing...
     
  10. Snarl
    Joined: Feb 16, 2007
    Posts: 1,640

    Snarl
    Member

    Well, if you look up a pilot bushing for an '85 Camaro 305V8 and a '70 Camaro 307V8 you would find the same pilot bushing listed.
     
  11. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    Thanks again Snarl.. I probably could have checked at my local parts house and wouldn't have needed to start this thread.. I guess I'll look at my driveshaft next for my vibration.. I had no vibration with the old 3 spd and old driveshaft.. When the new driveshaft was made it was a very tight fit to install it and maybe it needs another 1/2" or so removed...
     
  12. krylon32
    Joined: Jan 29, 2006
    Posts: 6,004

    krylon32
    Alliance Vendor
    from Nebraska

    In my T5 to Flathead conversion kit I address the pilot problem with a brass pilot bushing. Sold so many of them my machinist can make them in his sleep.
     
  13. brokenspoke
    Joined: Jul 26, 2005
    Posts: 2,874

    brokenspoke
    Member

    The camero has a different imput shaft than s 10 T-5......the od is the same for all the newer engines....however the ID of the bushing is different for s-10 and others
     
  14. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    So ^^^ can I buy a pilot bushing for a SBC that fits the S10 input shaft diameter???
     
  15. Snarl
    Joined: Feb 16, 2007
    Posts: 1,640

    Snarl
    Member

    Guys, I've been running S10 T5's with the regular V8 bushing for around 15 years now.

    If you go to www.rockauto.com and take a look at 1985 Chevrolet. Look at the Camaro, S10 & Astro van. The bushing ID's are all listed at .592-.594 (depending on manufacturer). The OD does change for some engines, such as the 2.8V6 which is smaller OD.

    I have also taken a mic to the tips of several different types of Chevy used transmissions and found them to all be the same, give or take a hair, as they were all in used condition.
     
  16. scrap metal 48
    Joined: Sep 6, 2009
    Posts: 5,734

    scrap metal 48
    Member

    Thanks again Snarl.. I'd hate to take mine apart and replace the pilot bushing with the exact same part...
     

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