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how hard is it to replace t56 parts

This is a discussion on how hard is it to replace t56 parts within the Manual Transmission forums, part of the Drivetrain category; I have a t56 in my 98 z28, but 6th is shot. I cant get it in at all, mechanic ...

  1. #1
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    1998 Z28

    how hard is it to replace t56 parts

    I have a t56 in my 98 z28, but 6th is shot. I cant get it in at all, mechanic told me that the syncronisors were bad, snapring was broken, and 5/6 fork felt bent. He said also that a pin might be out of alignment for the 6th gear, I have no problems in any other gear, every now and then I get a grind on reverse or 3rd, but very seldom, and may still be me getting used to t56 style if gears. Always had 5 speeds, and 6 is deffinatly different.
    Anyway, my question is, how hard is it to replace common rebuild items found in a rebuild kit? Is this something I need to pay 300.00 for cracking the case open, then labor, and then 400.00 in parts from a 200.00 rebuild kit? I was told it will cost me at least 1000.00 to fix the 6th gear problem. transmission has 110,010 miles on it, and I just changed fluid this weekend to see if that would help. It didnt, but I used atf III, which is what manual said, but I see some people are suggesting syncromesh? not sure what that is.
    I also notice alot of heat and noise coming from trans tunnel inside car, I took center console off, and someone has cut the rubber boot off the t56 shifter, and I think thats why its so loud, but why is it soooo hot. My 95 was not like this.


    Thnx

  2. #2
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    2000 WS6

    I just finished rebuilding my T56 myself. It was a little intimidating at first but I eventually worked through everything. I ordered all of the parts from D&D and down loaded the shop manual from the internet. Since I have a press and other machine shop equipment, I made the tools needed to pull gears, press bearings and anything else. I replaced all of the synchronizers, bearings and changed to the steel 3/4 shift fork along with a few other parts.

    The biggest challenge I had was understanding how the 5/6 shift rail needed to be positioned while reassembling the center case section. But after playing with it several times, I figured it out. Setting up the bearing pre load and end play tolerances also takes a little time and the snap rings require patience and the right tools.

    This task is one in which you need to be mechanically inclined and have the equipment and tools to do it, at least to do it right. If you decide to go for it, my advice is to take your time, and really look at how it comes apart.
    The manual shows the diagrams but it does not walk you through how to rebuild it. It tells you how to disassemble and reassemble with minimal wording. There may be other resources on how to rebuild it that give better pictures and commentary.

  3. #3
    T56 building fool thesource's Avatar
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    Its not too bad for a 1st timer but you will need a build sheet and pay attention to what you are doing . I've built so damn many its like a 2nd nature to me but the 1st couple were a challenge .

  4. #4
    down with the lot lizards blackhawk01's Avatar
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    Quote Originally Posted by thesource View Post
    Its not too bad for a 1st timer but you will need a build sheet and pay attention to what you are doing . I've built so damn many its like a 2nd nature to me but the 1st couple were a challenge .
    can you tell me what this problem is then?

    whenever i go into reverse and start to move my shifter pops out of reverse (yes im sure I have it in all the way)..then if I hold it while reversing it just grinds like hell...

    then I have to completely stop and shove it into reverse again and it sometimes fixes the problem

    sync maybe?

  5. #5
    T56 building fool thesource's Avatar
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    Its probably a combination of three things :

    1. broken fork inserts on the reverse gear fork and possibly a worn out fork itself
    2. syncro needs to be replaced
    3. the reverse gear slider is burred to hell and needs to be clean up or replaced .

  6. #6
    down with the lot lizards blackhawk01's Avatar
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    Quote Originally Posted by thesource View Post
    Its probably a combination of three things :

    1. broken fork inserts on the reverse gear fork and possibly a worn out fork itself
    2. syncro needs to be replaced
    3. the reverse gear slider is burred to hell and needs to be clean up or replaced .
    thankyou man..im taking it back to the dealer tomorrow to get it checked on..its under a 30 day powertrain warranty...how long should it take them to fix it? maybe they will throw in a new T56 for me?

  7. #7
    T56 building fool thesource's Avatar
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    More than likely they will give you a rebuilt unit . I doubt the dealer will attempt to rebuild it in house .

  8. #8
    down with the lot lizards blackhawk01's Avatar
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    Quote Originally Posted by thesource View Post
    More than likely they will give you a rebuilt unit . I doubt the dealer will attempt to rebuild it in house .
    i hope it doesnt take long to do..and i hope they dont fuck it up to where it doesnt drive as good anymore

  9. #9
    T56 building fool thesource's Avatar
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    They will probably either replace it with a GM unit or they might out source it to a local transmission shop in that area .

  10. #10
    down with the lot lizards blackhawk01's Avatar
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    cool deal..sorry for stealing your thread voodoo

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    You wouldn't happen to know the link to find the rebuild shop manual would you?

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    Quote Originally Posted by wjlandryiii View Post
    You wouldn't happen to know the link to find the rebuild shop manual would you?
    http://www.ttcautomotive.com/English/products/T-56.asp

    click on service manual

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    I really appreciate it, thank you for the quick response.

  14. #14
    Junior Member sthdrider2000's Avatar
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    I have a Pewter 2000 SS T-Top 6spd ebony leather, with SLP induction and exhaust, stut brace(UMI), drilled/slotted rotors, frame connectors(not on car), w/60,000 mi that I'm looking to sell to buy a Harley. Though I have the ability, I do not have the equipment to rebuild the broken 1-2 synchro's in the trans myself. I have gotten $12-1300 quotes in the S E Pittsburgh area to do the job. I want $14.5 out of the car which seems to be fair according to the market. Less of course with the trans prob.
    Question: Do I sell broken and hope to get $13 or do I fix? Know any place to get the car fixed cheaper near Pitts. PA?
    Any advice appreciated
    Thanks, ST

  15. #15
    I lika da Chevy's LETHALxLS1's Avatar
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    ^ I would buy a used t56 for 900-1000 and throw it in and sell. Not many people want to deal with issues like a trans when paying 13+ grand for a car. Just my opinion.

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    Quote Originally Posted by LETHALxLS1 View Post
    ^ I would buy a used t56 for 900-1000 and throw it in and sell. Not many people want to deal with issues like a trans when paying 13+ grand for a car. Just my opinion.
    X2! Fixing the trans will get you a higher price. Most people will think that the car was beat on then and stray away.

  17. #17
    I lika da Chevy's LETHALxLS1's Avatar
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    Quote Originally Posted by 99blueZ View Post
    X2! Fixing the trans will get you a higher price. Most people will think that the car was beat on then and stray away.
    ^ I fully agree

  18. #18
    Junior Member sthdrider2000's Avatar
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    Thanks for the opinions. I'm sure your right. I would probably think it was ragged on too.

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