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SM465 to NP208 build

Discussion in 'Manual Transmission & Clutch' started by NicBop03, Feb 28, 2019.

  1. NicBop03

    NicBop03 Junior Member

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    Joined:
    Aug 11, 2018
    Location:
    Charlotte, NC
    First Name:
    Nick
    Truck Year:
    1988
    Truck Model:
    K5 Blazer
    Engine Size:
    5.7L 350ci
    I have an SM465 from a 78 K20 that I plan on swapping into my 88 K5 which currently has a 700R4 and an NP208. I plan on keeping the NP208. I know the output shaft on the SM465 and the input on the NP208 are different, I have everything I need to do the swap except a coupler for the shafts. I believe Summit has one here. Does anyone have any experience with this situation?
     
  2. bucket

    bucket Super Moderator Staff Member

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    Aug 3, 2010
    Location:
    Usually not in Ohio
    First Name:
    Andy
    Truck Year:
    '77, '78, '79, '84, '88
    Truck Model:
    K5 thru K30
    Engine Size:
    350-454
    For what you want to do, the parts don't exist. What do you mean you have "everything"? Do you have a 'round' pattern adapter for the 465? With that, you will still need to swap a 32 spline output into the 465, and also a 32 spline input, for the 208.
     
  3. bucket

    bucket Super Moderator Staff Member

    Age:
    37
    Posts:
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    4,492
    Joined:
    Aug 3, 2010
    Location:
    Usually not in Ohio
    First Name:
    Andy
    Truck Year:
    '77, '78, '79, '84, '88
    Truck Model:
    K5 thru K30
    Engine Size:
    350-454
    BTW, that sleeve you have linked is a 27 spline female on both sides. That does you no good on either the trans or the t-case.
     

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