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What tranny & T-case

Discussion in 'The Garage' started by cbbr, Jan 1, 2005.

  1. cbbr

    cbbr 1 ton status GMOTM Winner

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    The post about the gov lock rear (I don't have it) got me wondering about what Trans and T-case I have. ('90 Burb V2500 350 TBI)

    The truck would have had a SM465, but the previous owner (yes only one) ordered an optional "three speed automatic transmission" for $625 according to the window sticker (yes I have it). Which Tranny is this? What T-case should it have?

    He also special ordered a 4.10 rear end (and I guess that chevy would gear the axles the same) for an up charge along with quad front shocks and skidplates and the Siverado package which came with auto locking hubs.
     
  2. darkshadow

    darkshadow 1 ton status

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    from the sound of it you have the same rig as me. only mine is 88.

    the siveradow trim package is really only that, trime you get more crome and power windows and locks and junk.

    in a 3/4ton burb auto trany would defanalty be a 400 torbo, and most likely a np208 (what mine has) but i cant say for sure if they dident go and change that in 90.

    BUt t-cases are really easy to find out. There is a round tag rivited to the tcase it will say "new prosses gear" and the numbers will be stamped on it.
     
  3. fatbob

    fatbob 1/2 ton status

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    On the specs page It show the 241 going into the blazers in 1988.

    So take a look under your burb, if the Tcase in cast iron, its probably a 205,
    alumnium 241.
    Transmission pan shaped like Texas = th400
    square with a corner missing = th350
     
  4. Blazer1970

    Blazer1970 1/2 ton status

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    TH400 with a 241.
     
  5. cbbr

    cbbr 1 ton status GMOTM Winner

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    Now that I know what to look for, we have a winner - 400 and 241. Anything that I need to watch out for with this combo?
     
  6. 85mudblazin

    85mudblazin 1/2 ton status

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    no for me it is my favrite combo (which some day I wil have), tough tranyn and a good low range t-case.
     
  7. smokkey1

    smokkey1 1/2 ton status

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    I'm running the same combo on my burb. it's been pretty good to me so far knock on wood. the only thing I'm going to do is clock my tcase to keep it off the rocks.
     
  8. cbbr

    cbbr 1 ton status GMOTM Winner

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    What, exactly, is involved in "clocking" a t-case?
     
  9. smokkey1

    smokkey1 1/2 ton status

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    it's a ring that munts between the transfer case and tranmision that allows you to tuck the transfer case up close to the body so it won't hang way past the frame rails. but you'll either have to put on an 1" body lift or beat the floor in and you'll need an longer front drive shaft.
     

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