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sm465 Np205 blazer owners

Discussion in 'The Garage' started by BowtieBlazer, Oct 6, 2002.

  1. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    I need an approx length and pics maybe as I am about to try and pull of a swap....problem is I have never seen a np205 shaft as to know what to look for in the junkyard... /forums/images/graemlins/1zhelp.gif

    Also lookign for pics of exhaust routeing for those of you with 205's already...Not lookign for true dual setup
     
  2. u2slow

    u2slow 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    Assuming your '84 has a SM465, then this is the adapter you need:
    NP205 adapter

    And the NP205 you need:

    NP205

    It may be cheaper to use a SM465/NP205 combo from an earlier (71-80 truck)
     
  3. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    thanks for the info I should ahve been more specific...I am looking for rear driveshaft lengths...preferably...cap to cap.....this setup is coming as a whole out of a 72 blazer or truck not sure which...going into a second gen 84 blazer...so cap to cap length on a rear driveshaft in a second gen blazer...the NP205 is fixed yoke......stock if it matters
     
  4. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    Okay here is the whole situation...maybe others can help trouble shoot. I am looking for a Np205 fixed yoke to swap in place of my np 208 slip yoke...a member here has a 465 / np205 setup that is all original out of a 72 truck / bazer.....i have my all original 465 / np208 all in tact..thinking about driving 6 hrs there and swapping stuff in the driveway....i mean tranny and all so he has my 465/adaptor and np208 as it came from teh factory and i have his 465 adaptor and 205 in mine as they came from teh factory and then I will be driving away, back home 6 hrs...problem is he doesnt have a rear driveshaft for the setup...so I need to find one.....i have a flat straight cross member so i should be able to adjust to make the new t-case work.... any other forseeable probs?
     
  5. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Help with shaft length sm465 Np205 blazer owners

    I did this swap 5 years ago. I have an 81 Jimmy that came with the 465/208 factory. I re-used the crossmember, all I had to do was move it up about 3 or 4 inches and drill some holes.

    My rear shaft is 41.5" from the center of the rear u-joint to the center of the front u-joint. That's with a 4" lift and a 14 bolt FF. The slip part of the shaft shows about 1" before bottoming out as far as I can tell.

    My 205 shifter fit through the tranny tunnel hole the 208 shifter box used to be...

    The only real wildcard is exhaust routing...although I had no trouble with mine.

    Hope that helps.

    Rene
     
  6. fortcollinsram

    fortcollinsram 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    Well, my rear driveline has a working length of 42.5"...That is with a 350/465/205 and a 14bff, 4" shackle flip, 2" TC springs... Hope this helps

    Chris
     
  7. BowtieBlazer

    BowtieBlazer 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    any pics of the under side of your truck?
     
  8. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    Re: Help with shaft length sm465 Np205 blazer owners

    Nope...no digi-cam either./forums/images/graemlins/frown.gif

    rene
     
  9. fortcollinsram

    fortcollinsram 1/2 ton status

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    Re: Help with shaft length sm465 Np205 blazer owners

    I maybe able to snag my rommies cam in the next few days and take a pick or two...Send me a PM to remind me tomorrow..

    Chris
     
  10. BigBen

    BigBen 1/2 ton status Premium Member

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    Hope this can help.
    I'm putting an SM465 with an NP205 in my '74 /forums/images/graemlins/k5.gifas we speak.
    I got the tranny/T-case/bellhosing from a junkyard '77 K5.

    My '74 came bone stock (350/TH350/NP203) a few months ago and I finally have the new engine(383)/tranny/T-case in there /forums/images/graemlins/thumb.gif. The only problem is that I don't have a driveshaft. /forums/images/graemlins/confused.gif

    The measured distance from the NP205 yoke to the Rear Pumpkin Yoke (centers of U-joint caps) is 41.75" sitting at stock ride height. I have the stock axle, but I haven't counted the bolts yet and can't be specific on the model. /forums/images/graemlins/tongue.gif

    Hope that helps.

    Good Luck!

    -Ben
     

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