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Hmm so I have a Dana 20

Discussion in 'The Garage' started by 75-K5, May 9, 2005.

  1. 75-K5

    75-K5 3/4 ton status

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    I finally unloaded what I thought was my 465/205 combo out of the crate that it came in 2 years ago. Well, it wasn't like any 465/205 combo I'd ever seen before. Upon closer inspection I realized that I have a 465 and a Dana 20. It's not really a divorced setup because there's no driveshaft going from trans to t-case, but there is about a 6" long output shaft enclosed in a tube going between them. I'm not upset about it at all, it was just a surprise. I don't forsee any problems swapping it into my K5 since it came with all the linkages and crossmembers out of the donor truck ('71 K5). It will be kind of unique to have a 465/d20 in an '87 Blazer. Plus, a Dana 20 weighs half of a 205, and I could swap Dana 18 gears into it to get a 2.46 low range, or a Tera 3.15 gearset. Everything I could find about Dana 20's said that they only came behind the 3 speed manuals in Blazers, but this is most definitely a 465. I wonder if it was a special order or if somebody rigged it up themselves? :thinking:
     
  2. u2slow

    u2slow 1/2 ton status

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    Read the brochures ;)

    http://brochures.slosh.com/

    Dana 20 was the standard t-case. NP205 was optional. However, if you optioned the TH350, you got the 205 anyways.

    The SM465/D20 combo seems to be a K5 exclusive. By '73 I believe you could only get a 3-spd with the D20.
     
  3. atho

    atho 1/2 ton status

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    I am pretty sure those had the same drive sleeve as the 465/205 and 465/221 did. Pop it apart and check for wear in it.
     
  4. 75-K5

    75-K5 3/4 ton status

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    Oh really? I thought for some reason that the 465/205 were mated directly together with an adapter.
     
  5. Blazer1970

    Blazer1970 1/2 ton status

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    The "tube" that you describe is an adapter. The adapter between the 465 and the 205 is pretty much the same length. The same driveshafts will work with the 465/D20 or the 465/205.
     
  6. diesel4me

    diesel4me 1 ton status Premium Member

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    Weird!--I've never seen one...

    I've seen only 3 speed saginaw tranny's mated to the Dana 20 transfer cases before!--never a SM465!--but I dont doubt there is such a thing--seems everyone in new england got the NP205 in their trucks for some reason--only the 3 speed and mostly 6 cylinder trucks are the ones I saw with Dana 20 transfer cases...pretty rare here,only seen 2 or 3 in all the years I fooled around with GM trucks!.. :crazy:
     
  7. TWISTEDJACK

    TWISTEDJACK 1/2 ton status GMOTM Winner

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    My 1970 K5 has a 465/dana 20 combo.................
     

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