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tranny question

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by rebelk5frk, Aug 24, 2002.

  1. rebelk5frk

    rebelk5frk 1/2 ton status

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    My buddy just got an 88 K5 with the 700r4 transmission. He has an 8 in lift with 36 in tires and stock gears.

    The problem is when you first hit the gas it feels like the transmission is slipping for the first couple of seconds then takes off fine and doesn't slip or anything after that.

    What could the problem be? And just how much trouble would it be to fix?
     
  2. BigBurban350

    BigBurban350 1/2 ton status

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    Check the fluid. If its brown, its burned, and if its sparkling its clutch material. Both are no good.
     
  3. transcore1

    transcore1 Registered Member

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    Could be many things, The fluid can be a good indicator of any problems. The 700 relies on the valve body to make shifts and engage forward or reverse movement. In later years(92 and up) shifting is all computer controlled (4l60e)
    If fluid is dark but free of metal try a fluid change. Remove the pan and check for debris. Aluminum= torque converter, Black Goo= clutch material, Metallic Mush= hard parts damage. If none of the above try adjusting(SLIGHTLY) the TV cable which can increase operating pressure and cause firmer shifts. A nasty pan = rebuild soon or walk. Transcore1 Project Homepage
     

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