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NP 203 vs NP 208

Discussion in 'The Garage' started by Joe T, May 7, 2002.

  1. Joe T

    Joe T Registered Member

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    I'd like to get some opinions if anyone has any experience (good or bad) with a NP 208.
    I'm building an '85 K5 that came with a NP 208 (I have no trail experience with a 208), however I also have access to a NP 203 from my '74 K5 that I've taken around the block a few times.
    Thanks for any input.
    JT
     
  2. 74k5inVA

    74k5inVA 1/2 ton status

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    i hear that the 208 is ok, but since it is made of aluminum, i believe, it is more prone to damage than the almost indestructible 203, however if you have a 700r4 it will be easier to match up with the 208.
     
  3. AJMBLAZER

    AJMBLAZER Better to be lucky than good. Premium Member

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    208 has a slip yoke, which when they break or start malfuncioning, are a b$%ch. However, the 208 is also much lighter and has a better low range, 2.60 or so.

    203 is beefier yes, but it's also heavy as hell and the low range is only down around 2.0 or so.
     
  4. txbartman

    txbartman 1/2 ton status

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    I have a 208 and have always been pleased. They are more vulnerable since they are aluminum. They are also much lighter in weight for the same reason. They are fairly easy to rebuild, if necessary. The slip yoke is an issue. If you lose your rear driveshaft (u-joint goes), you will loose your whole driveshaft. I still like mine just fine.
     
  5. Joe T

    Joe T Registered Member

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    Thanks guys
     
  6. Dunc03

    Dunc03 1/2 ton status

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    easy enough to rebuild, but hard as he** to stop leaks. I rebuilt mine and it leaked worse than it did before. As far as running traisl and the function I have never had any problems out of mine. I only rebuilt it to replace the chain and get the slack out of my driveline.
     
  7. MudbogAD

    MudbogAD 1/2 ton status

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    Strengthwise the 203 is probably stronger. But the 208 should be strong enough. Put a SYE on the 208 and boom, you got a decent 2.72:1 T-case. If you do decide to go with the 203, buy a part time kit for it but it only has a 2:1 low range.
     
  8. Blazinaire

    Blazinaire 1/2 ton status

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    The only way to get a 208 w/SYE is to use dodge parts, there is no kit. The 203 would be pretty cool with the WMS 3.6:1 low range kit though. As for my opinion on 203vs208, I would take my K5's 208 over my K25's 203 any day. 2.61:1 isn't a bad low range for a stock case on a rig with a v8.
     
  9. Blazer_Boy

    Blazer_Boy 1/2 ton status

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    Try installing a 203, that outta change your mind in a hurry. /forums/images/icons/laugh.gif They're both chain driven, but the 203 has that ungodly heavy case.
     
  10. Blazer79

    Blazer79 1/2 ton status

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    What's this WMS 3.6:1 low range kit? How much is it and where do I get it?
     
  11. K10ANDYKHAMNIC

    K10ANDYKHAMNIC 1/2 ton status

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  12. Blazer79

    Blazer79 1/2 ton status

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    Damn! I'll pass. So far I've only needed lower gears once, but I've got a 454 now /forums/images/icons/smile.gif
     
  13. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    There is no bolt on SYE kit for a 208. You can however make one using dodge parts and some welding and modication. 208 cases are 2.61:1 low range not 2.71:1. The 241 case is a 2.71:1 low range and has better gears and an oil pump unlike the 208 and also has SYE kit available for it.
     

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