1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Transmission and TCase identification (Muncie + NP)

Discussion in 'Transmission & Transfer Case' started by mdesign, Sep 22, 2020.

  1. mdesign

    mdesign Junior Member

    Posts:
    7
    Likes Received:
    0
    Joined:
    Sep 20, 2020
    Location:
    US
    First Name:
    Scott
    Truck Year:
    1976
    Truck Model:
    K10
    Engine Size:
    350
    Based on reading online it sounds like this 4-speed with Low gear is a Muncie SM465 and the 4x4 Transfer case is NP205 - any recommendations for bolt pattern identification or otherwise?

    Where the truck currently sits boxed in can’t easily crawl under, but will move soon.

    [​IMG]
    [​IMG]

    Thanks - barn find vehicle has sat for over a decade. Thinking new fluids for transmission and t case in the future after complete tuneup otherwise.
     
  2. Blue Ox

    Blue Ox Turning Diesel Fuel Into Fun

    Posts:
    2,787
    Likes Received:
    4,295
    Joined:
    Mar 27, 2018
    Location:
    LI-NY
    First Name:
    Derek
    Truck Year:
    1985
    Truck Model:
    K20HD
    Engine Size:
    6.2L
    So really,... a long range shot of the shifter where we can't actually read the shift pattern, and a close up of the X-fer case shifter with the mirror covering most of the markings? :confused:

    Do you think any of this through, or is this supposed to be a challenge?
     
  3. mcarlo86

    mcarlo86 Supporting Member Supporting Member

    Posts:
    191
    Likes Received:
    267
    Joined:
    May 17, 2019
    Location:
    ND
    First Name:
    Brian
    Truck Year:
    1990
    Truck Model:
    Suburban
    Engine Size:
    350
    It's an SM465 four speed. Pretty sure it is a NP205 also. If it were a 203, it would have had 4 Low Lock or something to that effect on the furthest ahead shift position. In 1976, 203 or 205 would be the only T-case options. I am not sure if they put 203's behind many manual transmissions in 1/2 tons. I haven't personally seen one anyway.
     
  4. bucket

    bucket Super Moderator Staff Member

    Age:
    38
    Posts:
    22,111
    Likes Received:
    7,950
    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
    Yeah, that's a 205. The stick is round, which is a dead giveaway. 203 had a rectangular stick and was also rarely found behind a 465.
     

Share This Page