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  1. #1

    1992 T 56 transmission

    Hello All, Newbie here. Hopefully I'm in the proper section for my post.

    I have a couple of questions about upgrading my 1992 T-56.
    While researching this, I found several sources in apparent agreement
    that the 1992 T-56 has a much lower input torque rating than any other T-56.
    Before I embark on upgrades, I would really like to know more about this
    particular year T-56, what specifically is different partswise that makes
    the torque rating so low ?
    Can you folks shed some light on this ?

  2. #2
    Regional Membership Director
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    Steve-Indy's Avatar
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    I would suggest that you call Rodney at RPM Transmissions in Anderson, IN...800-406-1109

    or

    Jon at Donato Engineering in MI...248-676-8286

    Both of these places are highly experienced, well respected businesses...and, either can beef up your transmission at quite reasonable rates.
    I don't send or receive "PM's" since I prefer DIRECT communication.

  3. #3
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    XSnake's Avatar
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    I believe the main difference in the 92's is there is no reverse syncro.

    Jon Donato is the guy to call.
    ACR-X #26 - 1992 RT/10 - Demon PCP - Ram 2500 Cummins

  4. #4
    XSnake, I know there is no reverse lockout, but no synchro ?

    By the way, thanks guys for the leads.

  5. #5
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    gen1 t56.

    the 92 seemed to come with organic lined(paper) or carbon lined blocker rings.
    all gen1 had aluminum 3-4 shift fork, upgraded to cast iron in 1996
    gen1 2nd gear had shorter engagement teeth which the length was doubled in 1996 to prevent shearing of the teeth

    to upgrade a gen1 trans, cast iron 3-4 fork, updated 2nd gear, and new blocker rings and its to gen2 level.
    Don Scharf Automotive Inc. Viper Parts Sales, Dismantling, T56 Repair Specialist 1800-338-4002 #102
    1999 GTS with 370ci LS swap under way.

  6. #6
    Enthusiast
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    my old compant profile from when we were a vendor came alive again, i cant edit the signature for some reason so i m sure it will get taken down

    gen1 t56.

    the 92 seemed to come with organic lined(paper) i have only found them in one though. most gen1 have carbon lined blocker rings.
    all gen1 had aluminum 3-4 shift fork, upgraded to cast iron in 1996
    gen1 2nd gear had shorter engagement teeth which the length was doubled in 1996 to prevent shearing of the teeth

    all viper t56 have a synchro on reverse, i dont know of a t56 that didnt.

    gen1 also had clear shift fork pads, all other years had black, the black seem to wear harder than the clear, most gear on 5/6 & R all ways smeared and trashed.

    to upgrade a gen1 trans, cast iron 3-4 fork, updated 2nd gear, upgrade to current standard black fork pads, or upgrade to bronze and new blocker rings and its to gen2 level.
    Last edited by RyanLS.GEN2; 02-06-2020 at 08:38 AM.

  7. #7
    Supporting Vendor JonB ~ PartsRack's Avatar
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    1992? Is this trans still in the OE 92?

    Ill toss in a thought about "originality value" vs upgrade perceived value. IF you plan to drive the '92 hard, then by all means have at it......

    But you might be sacrificing some real value if you have an all-original 1992.....

    and yes, Donato is DA-Tranny-Man
    Last edited by JonB ~ PartsRack; 02-05-2020 at 03:06 PM.
    Jon "JonB" Brobst ~~~~:<~ JonB@PartsRack.com


  8. #8
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    Dan Cragin's Avatar
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    The 92 Transmission should be just fine at the stock power lever. We drag raced a stock 1992 extensively back in the day. Well over 200 runs down the 1/4 mile. The weak point were the halfshafts, which only lasted about
    50 runs before failing.

    The best transmission for the money right now is the Rockland Gear T56. It has all the T6060 upgrades and a choice of ratios. They can rebuild yours, do a core exchange or sell you one outright. Good for 1000 torque.
    John Donato, retired team Viper driveline engineer can do the same for you.
    specialtyperformanceteam.com
    310-597-6295


 

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