dana 20 T-case info

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by jonm, Aug 16, 2002.

  1. jonm

    jonm Newbie

    Aug 16, 2002
    Likes Received:
    I have a dana 20 3 speed combo at my cabin. I know the dana 20 came behind both the sm465 and the 3 speeds in the early blazers so will a dana 20 off a 3 speed bolt up to a sm465. Are the input gears the same and/or the output splines on the 3 speed and 4 speed transmission shafts?
    How long is the sm465 to dana 20 adapter?
    the reason I ask is I'd like to run a 465/dana 20/ divorced 205 for 4:1 reduction. Since I have the dana 20 at teh cabin I figured I'd use it almost as a range box and remove the front drive portion and just operate it in N 4HI and 4LO..
  2. m j

    m j 1/2 ton status

    Dec 28, 2001
    Likes Received:
    hate the double TC schemes
    go the tried and true way
    20 is a nice lil case but IIRC it is more trouble to shift as you have to slide the gear to mesh, not constant mesh like 465/205/203 and every modern gearbox

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