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Which is stronger - NP205 or Dana 300?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Mudzer, Feb 6, 2001.

  1. Mudzer

    Mudzer 1/2 ton status Author

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    I was checking out the crawl ratio on my K5 and wondered if anyone out there uses a Dana 300 Case for a fullsize GM. The Dana 300 has a low range of 2.62:1 where the NP205 has 1.98:1. You could really help the crawl ratio by having the D 300 case. Is this case strong enough for fullsize applications? Are there adaptors available for the SM465/D 300 combo? Give me the good and bad on this setup.

    Mudzer 1978/91 K5
    <font color=blue>www.mudzer.coloradoK5.com</font color=blue>
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    There are adaptors for the SM465/Dana 300 but they're stupid money. I have a friend with a CJ-5 that priced em out.
    I don't think the Dana 300 will stand up in a K5. The 205 is way stronger.

    Rene

    [​IMG]
     
  3. pcorssmit

    pcorssmit 1/2 ton status

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    The good news: the 300 can be adapted to just about any trans.

    The bad news: It is a much lighter duty t-case than the 205 or even the 208/241. While it is a gear drive, iron case unit, it is actually lighter and smaller than a 208. The 300 will stand up to a lot of power in a Jeep, but the weight of a full size is too much for it. If you want the lower gearing (from a factory t-case), swap in a 208 or 241.

    Pete

    '83 K5, 350 TBI (ex 6.2), Dana 60/14 bolt, Detroits, 3" lift, 15-39.5x15 TSLs
    '97 Dodge 2500 4x4 CC LB Sport, Cummins 5 spd
     
  4. '73 K5

    '73 K5 1/2 ton status

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    Yep. Its kinda like how a Dana 44 can be wheeled really hard in a light Jeep, but won't last as long in a fullsize truck.

    '73 K5
    Chevy good...Ford bad
     

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