automatic

  1. gill finn

    Slow Climb To The Top

    Hello all, I have an '84 C20 350 automatic, I believe it's a TH400, it seems to shift well from a stop, but when I get to a slight grade it will not drop into a lower gear. It used to, but no longer and as a result of course the engine will rev but that's it. Of course I can manually shift into...
  2. Subourbon

    700R4 wont shift into 3rd

    Hey guys, 1982 k20 suburban with 6 2 diesel and 700r4 trans 4x4. So yesterday went out, on a road that'd about 50mph drove there fine, no issues. On the way back, 1st to 2nd, shifts a bit hard but that's been the case since i got the truck. Coming up to shift into 3rd just nopes out. Almost...
  3. T

    4L80 Question

    Hi Everyone, I have an 85 350/TH400. Swapping to a 4L80 for the OD. Not a 4L80E, its a hydramatic 4L80. Does this use a TV cable like the 700R4 or cable like the TH350/TH400? Thanks in advance.

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