Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

NP203?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by jms0945, Sep 13, 2001.

  1. jms0945

    jms0945 Registered Member

    Joined:
    Aug 22, 2001
    Posts:
    64
    Likes Received:
    0
    Location:
    Huntsville, Alabama
    can anyone tell me anything about the NP203?
    weather it is a good transfer case or not?
    How tough?
    and if a good price for one off of an 1980 is $100
    or $250 for both the orig tranny and transfer case
    thanks in advance
    Michael
     
  2. chevyfumes

    chevyfumes Court jester

    Joined:
    Feb 24, 2000
    Posts:
    38,584
    Likes Received:
    266
    Location:
    Watch for the muzzleflash!
    they weigh about 175lbs. so get your hernia gerdle ready[​IMG]

    <font color=blue> I'd rather have a bottle in front of me, than a frontal lobotomy!
     
  3. outlaw612

    outlaw612 1/2 ton status

    Joined:
    Feb 11, 2001
    Posts:
    2,342
    Likes Received:
    0
    Location:
    Springfield, Illinois
    They are full time t-cases which means alot of wear on the front end. You can put in a part time conversion but instead of the hassle Id just go with a 205.

    <a target="_blank" href=http://www.geocities.com/outlaw613/K5.html>http://www.geocities.com/outlaw613/K5.html</a>
     
  4. Grim-Reaper

    Grim-Reaper 3/4 ton status Author

    Joined:
    Feb 17, 2000
    Posts:
    7,385
    Likes Received:
    0
    Location:
    Atlanta
    In 1980 ALL trucks should have come with slip yoke NP205's. If the 80 does have a 203 it was probably swapped in. If it does have the 205 it should then jump on it. they are hard to find. $100 is a STEAL. Anybody that's knows what they have charges between $300-$500 for a NP205 with the adaptor. MAKE SURE YOU GET THE ADAPTOR!!!!!! They are expensive.
    THe 205 will have a plate with 3 bolts on the back side of the case. That's the easy way to tell a 205.

    It's not my damn planet monkey boy!
    <a target="_blank" href=http://communities.msn.com/OffroadK5s>communities.msn.com/OffroadK5s</a>
    75 Jimmy, Dollar
    79 Chevy Blazer, Her's
    70 Chevy Burb
    Grim-Reaper
     
  5. jms0945

    jms0945 Registered Member

    Joined:
    Aug 22, 2001
    Posts:
    64
    Likes Received:
    0
    Location:
    Huntsville, Alabama
  6. Executioner

    Executioner 1/2 ton status

    Joined:
    Feb 22, 2000
    Posts:
    1,530
    Likes Received:
    0
    Location:
    Temp. Ft. Walton Beach Fl. home=Tucson, Az.
    They might be heavy, but your guess of 175lbs. is pure B.S.
    come down around 125lbs. and we will talk #'s .
    okie doykie
     
  7. chevyfumes

    chevyfumes Court jester

    Joined:
    Feb 24, 2000
    Posts:
    38,584
    Likes Received:
    266
    Location:
    Watch for the muzzleflash!
    OK I'll give ya 5lbs. it weighs in at 170...NP203 type:full-time, cast iron, chaindriven case Low range: 2:1 Applications: '73-'79 Dodge, ford and GM trucks...[​IMG]

    <font color=blue> I'd rather have a bottle in front of me, than a frontal lobotomy!
     
  8. jms0945

    jms0945 Registered Member

    Joined:
    Aug 22, 2001
    Posts:
    64
    Likes Received:
    0
    Location:
    Huntsville, Alabama
  9. TorkDSR

    TorkDSR 1/2 ton status

    Joined:
    Sep 1, 2001
    Posts:
    1,258
    Likes Received:
    0
    Location:
    bucks co pa
    i got rid of one, it drove me nuts. they're always in all wheel drive, not four wheel drive, one wheel any wher, from what i figured. the shift pattern was something like:one front one back wheel high, one wheel anywhere high, one wheel anywhere low, one front one back low. i think. so if you have front manual hubs hubs you have to drive it in 4 hi all the time, otherwise it may send power to one wheel up front that is unlocked. it's confusing.

    Tork DSR
    I just got a winch, it takes the fun out of things.
     
  10. mike reeh

    mike reeh 1/2 ton status

    Joined:
    Jul 23, 2001
    Posts:
    752
    Likes Received:
    0
    Location:
    San Diego, CA
    NP203 is a great case.. some will say not as good as the NP205 but its good none the less.

    its a full time 4WD case.. you put it in HI or LO for normal driving on pavement and stuff.. then the front and rear driveshafts can turn different speeds... you put it in HI-LOC or LO-LOC and its just like any other transfer case in 4wd.. the driveshafts are locked together.

    The coolest thing about the NP203 is that you can install a part-time kit which will give you 2hi, 2lo, 4hi, 4lo...... the 2lo is nice to have sometimes.. plus it shifts better than a NP205 in my opinion, and the shifter handle looks better. They are chain driven which is somewhat of a downside but if you replace the chain once you'll probably never have to touch it again. I will run a 203 over a 205 anyday.. especially since a 203 will mate a turbo350 trans so easily.. thats my opinion..

    mike reeh
     
  11. TorkDSR

    TorkDSR 1/2 ton status

    Joined:
    Sep 1, 2001
    Posts:
    1,258
    Likes Received:
    0
    Location:
    bucks co pa
    i am going to tell you a secret you must swear not to tell anybody. I pulled my 205 off a 74 pickup with a 350 trans, honest. and it was bone stock, i swear.
    P.S. i have two wheel low, i just jon't lock the hubs.
    P.P.S. you're right the 203 shifter is sweet looking.

    Tork DSR
    I just got a winch, it takes the fun out of things.
     
  12. chevyfumes

    chevyfumes Court jester

    Joined:
    Feb 24, 2000
    Posts:
    38,584
    Likes Received:
    266
    Location:
    Watch for the muzzleflash!
    I have a 74 and it should have had a 205 I guess they must have run out and put in the 203[​IMG]

    <font color=blue> I'd rather have a bottle in front of me, than a frontal lobotomy!
     
  13. jms0945

    jms0945 Registered Member

    Joined:
    Aug 22, 2001
    Posts:
    64
    Likes Received:
    0
    Location:
    Huntsville, Alabama
    well the K-5 im thinking about putting it into has a th400 trans
    not sure if it will hook up good or not
    i cant seem to find any info about the th400
    Michael
     

Share This Page