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which T case?

Discussion in 'Chevy Trucks' started by bummerkit, Jul 9, 2001.

  1. bummerkit

    bummerkit Member
    Messages: 38

    what transfere case does a 79 chev k30 have? it dosent look like the 205 in my blazer and its not a fulltime 203 so i cant figure what it is. can any one help? chuck i have looked on your pages to try and find it but havent been able to yet.
     
  2. Power mad

    Power mad Member
    from Oregon
    Messages: 75

    Most likely it is a 208 .
    it will have an aluminum case.
     
  3. bummerkit

    bummerkit Member
    Messages: 38

    what are the specs on the 208? like what is the lowrange gearing?
     
  4. Power mad

    Power mad Member
    from Oregon
    Messages: 75

    About the only thing I know about the 208 is that it is chain driven and has a 2:61:1 low range.
     
  5. bummerkit

    bummerkit Member
    Messages: 38

    thanks for the info
     
  6. Chuck Smith

    Chuck Smith 2000 Club Member
    from NJ
    Messages: 2,317

    The 208 has an aluminum case. It is very different looking compared to the 203, and 205 (and no photo of one on my site). The 208 isn't a bad case, used on 3/4 ton trucks through the 80's. It didn't debut until 1981 though. When it was new, that 79' K/30 had an NP 205 in it if it was a 4 speed, and the 203 if it was an auto. 1980 was a transition year, so all trucks had the NP 205. In 81, all 1/2 and 3/4 ton trucks came with the NP 208 as a standard.

    The 208 is weaker by design than the 203. Both the 203 and the 208 are chain driven cases. The NP 205 is gear driven, no chain inside.

    ~Chuck
     
  7. bummerkit

    bummerkit Member
    Messages: 38

    if it is a 203 how much does it cost to convert it to part time? is it something that i can do my self? does any one know anything about the offroad design doubler kit that is what i would like to run.
     
  8. reallyrusty

    reallyrusty Member
    Messages: 71

    It cost about 50 bucks w/o the lock hubs Its pretty straight forward. Just mark sure you use a good oil preferably synthetic and fill the case high as the rear bearing will be getting little oil because the chain/pump not running in two wheel drive
    hope this helps.