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82 SM465/NP205?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by tys, Mar 17, 2002.

  1. tys

    tys Registered Member

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    I picked up an SM465/NP205 recently and was told it came from an 82 K5. I'm putting it into a different vehicle, so I never questioned him. I checked the info page for an 82, and see that the NP205 wasn't available for that year. Anyway I can tell what year my setup is? I'm mostly concerned about getting the correct universals for it. Did these come with CV driveshafts front or rear? I have to use CV for my application and assume the yokes have to change.

    Any help or comments are appreciated.
     
  2. mike reeh

    mike reeh 1/2 ton status

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    the 205 should have a blue tag screwed onto it that will tell you when it was made. <a target="_blank" href=http://lagparty.org/~mike/pix/np205tag.jpg>Here</a> is a pic of mine.. It was made in '77

    if you separate the sm465 and np205, you can count the # of splines, it should be either 10 or i think 32 for the later models, that will give you some idea of how old it is.. I dont remember exactly what year they went to the finer splined input, but it should be easy to find out.

    It would have never come with a rear CV but from the mid 70's on up, they all had cv front driveshafts (AFAIK)..... and should have a flanged front output, regular yoke on the rear.... unfortunately, the flanged yoke will not be a direct swap with the ujoint style yoke.. there is a different spline count, it will require swapping some of the innards. good luck

    mike
     
  3. thatK30guy

    thatK30guy 1 ton status Premium Member

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    For an '82 K5 to come out with a 465 and 205, that's not possible. '81 started the use of the 208 t-cases.

    Sounds like you either got a 205 that was swapped into a K5 from a K30, OR, you got a 208 case and the seller told you it was a 205.
     
  4. tys

    tys Registered Member

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    Well, I guess it could have come from a K30? I don't know for sure because the dude I bought it from lives in another state and hasn't returned any of my email messages. I will go out to the barn in a few minutes and see if the data plate is on it. I know it has fixed yokes front and rear. Anyway to tell which universal will fit this sucka? Trial and Error?
     
  5. u2slow

    u2slow 1/2 ton status

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    If its a 1-ton NP205, it uses a 1350 series yoke on the rear output. The joint for this yoke measures 3-5/8" across and has 1-3/16" cups. The front should be a flange.

    If it has yokes front and rear, its likely an older (pre-77) unit. I think they use the smaller 1310 joints (3-1/4" x 1-1/6")

    Here's a couple of links to a Spicer size chart - including yoke numbers:
    page2
     
  6. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    If it has a yoke front output it's an early 70's model. Later 70's on up had a flange front output. I have a SM 465/NP205 combo from a 76 which has the yoke front output. Installed in my truck is a SM 465/NP 205 combo from a 77 with a flange front output.

    Rene
     
  7. tys

    tys Registered Member

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    Thanks for all the replies and help. I checked the tag and it is from a 1974. I will check those links and probably purchase the u-joints to check them out. I will take a tape measure to them first..
     
  8. tys

    tys Registered Member

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    Do I have to change the rear output yoke if I want to run a CV type driveshaft to the rear axle? If so, what do I replace it with, a flange type or another yoke type? I have a CV front shaft from a Cherokee that I'd like to use.......if possible.
     
  9. tys

    tys Registered Member

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    Well i went outside again and checked the XJ front d-shaft I have. I don't think i need to change yokes. The CV end that mounts to the t-case is threaded, whereas the t-case yoke is through hole. So, it looks as though if I get the right size/length bolts, it will bolt up (provided the universals are the same - according to the books, they're spoda be).
     
  10. u2slow

    u2slow 1/2 ton status

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    A 78-79 Bronco uses a NP205 and a rear CV shaft. Worst case, you need to swap the 205 output shaft and yoke together. Best case, you can just get a new or used yoke. AFAIK, the Bronco uses a 1330 series joint.

    It sure would be nice of the Jeep CV would bolt right on!
     
  11. tys

    tys Registered Member

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    Yea, it sure would be. I'll check it out tomorrow night. In the meantime, what's the difference between a CV style yoke and a non CV style yoke (the yoke that's on the t-case)? Visually I could not see a difference, but like I said, I didn't try to bolt them up to one another, so that process may hold the key. I checked the shaft and it is a CV style, with the pivot ball in the center. I'm just dying to get out there to inspect it!
     

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