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can you install a sm465 in a 81 k-5?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by MUDZILLA, Dec 22, 2001.

  1. MUDZILLA

    MUDZILLA Registered Member

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    i have this k-5 that keeps eating 700-r4 trannys i found a 81 lwb truck with a sm465 every thing is still in it but the 208 case is bad . will my 208 fit the 4 speed? spline count? thanks for the help ! i can get it all for $300.00
     
  2. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

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    My 81 Jimmy came with a SM465/NP208 combo from the factory. If the replacement 208 you have is 32 spline it should fit no problem. Make sure you get all the pedals and linkages for the swap...

    You'll also need to re-do the driveshafts after the swap, the SM 465/NP208 is shorter than the 700R-4 set-up. It is worth it for a tranny that will not blow up once a year though[​IMG]

    Rene

    <font color=green>Dyslexics of the world...UNTIE!</font color=green>
    <a target="_blank" href=http://coloradok5.com/gallery/project_T2> tRusty pics...</a>
     
  3. MRBIGBLOCK

    MRBIGBLOCK 1/2 ton status

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    yes it will work if the spine count is the same your better off if ya can pull those parts your self. because you will need a lot of difrent bolts the flywheel and pressure plate bolts. also dont forget to install a pilot bushing or better yet a bearing (6.2 diesels run them) in the crank. enjoy that granny low gear.
     
  4. 95 Silverado

    95 Silverado 1/2 ton status

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    your 700R4 transfer case has a 27 spline input gear, the sm465 transfer case has a 32 spline input, you should be able to put the 32 spline input gear from the bad transfer into your transfer case.

    '95 Chevy Silverado 1500
    5.7 V8-NV4500- 3.73 rears
    See My Toys: http://community.webshots.com/user/wdb172454<P ID="edit"><FONT class="small">Edited by 95 Silverado on 12/22/01 05:46 PM.</FONT></P>
     
  5. 1990K5

    1990K5 1/2 ton status

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    isn't an sm 465 a pinto transmission?
     
  6. 79Jimmy

    79Jimmy 1/2 ton status

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    If by that you mean it takes all the metal in a Pinto to be melted down to make one sm465, then yes it is a Pinto transmission.[​IMG]

    James

    jimmy79@shaw.ca
     

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