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TH350 / 205 combo?!

Discussion in 'The Garage' started by Russell, Jun 7, 2006.

  1. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    Hey guys!

    I was crawlin around underneith a mid 80's 4x4 this morning and noticed that the thing has a TH350 with a 205 bolted to it.... Is that even possible, or is it a TH400 that has the modulator on the back instead of the side like my 2wd TH400 had?

    If it is a 400 / 205 unit, I think I may be pulling a tranny soon ;)
     
  2. evo

    evo Registered Member

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    look at the tranny pan. th350 is square with one corner cut off at an angle, the 400 is odd shaped pan, with a bunch of curves in it. hope that helps
     
  3. Citizen Rider

    Citizen Rider 1/2 ton status

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    There are 350/205's out there...
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Very possible , slip yoke 205 and th350 was around .
     
  5. 4x4_76

    4x4_76 1/2 ton status

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    I have 350/205 combo.
     
  6. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    1st Gens (69-72) are commonly found with the TH350/NP205 combo....

    :usaflag:
     
  7. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    Now that I think of it, I don't recall seeing any sort of kickdown cable, and the wiring on that truck was a mess, so it may very well be a TH400 / 205 combo :)
     
  8. onlychevy6

    onlychevy6 1/2 ton status

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    i also have a th350/205 combo in my 75 blazer
     
  9. BizeeB65

    BizeeB65 1/2 ton status

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    I just swapped in a 205 behind my TH350. The Np203 and Np205 look similar from the rear if your not familiar with them. But if it does have a TH400, SNAG IT!
     
  10. Emmettology 101

    Emmettology 101 3/4 ton status

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    Could be a swapped in combo.. Check the pan like evo said.

    Does the 205 have a slip yoke?
     
  11. diesel4me

    diesel4me 1 ton status Premium Member

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    Its a TH350...

    If the modulator is facing the rear, near the tail shaft,its a TH350 for sure..A TH400 has the modulator sticking out sideways on the front passenger side ,near the bell housing....I think GM used the TH350 until around 1981-82 when then 700R4 was introduced..lots of 69-79 trucks had the TH350/NP205 setup..after that the overdrive tranny came along..the 80's 4x4 TH350's are rare,but they did have some..:crazy:
     
  12. 76zimmer

    76zimmer Flyin Rat Premium Member GMOTM Winner

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    I have a 205 from a 350, it does have a slip yoke. 1980
     

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