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NP203 or NP205?

Discussion in 'The Garage' started by justwhatido, Dec 28, 2004.

  1. justwhatido

    justwhatido 1/2 ton status

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    What's the relative strengths and weaknesses of each? I have a 73 so I figure that it has a 203. But since it's all in pieces, should I keep the 203 or swap for another transfer case?

    Fred
     
  2. sweetk30

    sweetk30 professional hooker Premium Member

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    tcase

    205 the strongest of the 2 same 1:96 -1 low but 205 parttime 203 fulltime unless kit. 205 gear to gear 203 sloppy chains. i have hered of a guy that in the fall went mudding and submerged it come spring finaly checked fluids and found water. but it worked fine all winter . that is strength.
     
  3. boz42

    boz42 1/2 ton status GMOTM Winner

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    it is all in what u are gonna ado w/ the rig. if u are building a truck for ultimate strength the 205 is the way to go.

    if u are just gonna cruise & do some light trails the 203 will get it done.

    if u are gonna build a trail only rig or u got cash to burn & want bling keep the 203 & put a 205 behind it.
     
  4. paulmoon

    paulmoon 1/2 ton status

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    Yep. I also vote for the 205. Better gas mileage also. My 205 goes in next week. Out with the 203. The 205 is much stronger.
     
  5. crwln73

    crwln73 1/2 ton status

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  6. OrangeCrushK10

    OrangeCrushK10 1/2 ton status

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    205

    I just swapped my wife's 203 for a 205 in her K5 when the 203 broke. I've been abusing my 205 in my truck for years and it's never made a squeak.

    Basic differences between 203 and 205 are:

    203 is chain driven and weaker than the gear driven 205. I have never heard of a 205 breaking unless under extreme use.

    203 is full time which causes uneeded wear on 4 wheel drive parts and drop in gas mileage. 205 is part time so it can be either a 2 wheel drive or 4 wheel drive, saving in gas and maintenance costs.

    You can modify the 205 to dual stick shifting relatively easily, letting you control the front axles speed independantly from the rear axles. DO NOT EVER PUT THE FRONT AND REAR AXLES IN LOW AND HIGH AT THE SAME TIME! You'll break something bad. But you can stick one axle in neutral and one in gear and do fun stuff.

    Lastly the 205 is shorter, which is good for driveline angles when lifts are concerned. So you'll need to lengthen your driveshaft about 6" when swapping to a 205. This costs around $120.


    Hope this helps!
     

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