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What tranny in 81 dually

Discussion in 'The Garage' started by 8_YOUR_H2, Oct 9, 2006.

  1. 8_YOUR_H2

    8_YOUR_H2 1/2 ton status

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    I am going to look at an 81 Chev dually 2wd tonight with a 454 and a 4 speed. What tranny would that have in it?

    Thanks
     
  2. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    manual = sm465
    auto = th400
     
  3. sandawgk5

    sandawgk5 3/4 ton status

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    If it is a 4 speed then it will be a 465:D 700R4 never came factory behind a 454.

    Ira
     
  4. 8_YOUR_H2

    8_YOUR_H2 1/2 ton status

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    I thought it was an sm465 I didn't know if that was the only trans available or not. Thanks!
     
  5. Avery4jc

    Avery4jc 1 ton status Premium Member GMOTM Winner

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    and we thank the lord for that...

    -Avery
     
  6. thatK30guy

    thatK30guy 1 ton status Premium Member

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    Then how would you explain this to Stephen Watson whom runs this setup in Wally?
     
  7. Avery4jc

    Avery4jc 1 ton status Premium Member GMOTM Winner

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    hey I just saw him in a magazine that I picked up in the Dallas Airport during my layover yesterday....looked like he was having some fun.
    I don't know, I guess a pat on the back and some good luck, lol.

    -Avery
     
  8. sandawgk5

    sandawgk5 3/4 ton status

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    I had a 1980 C20 Crew Cab in high school that had a 454 and we pulled the 400 and put a 700R4 in it and it handled it fine. Hell my grandpa pulled his 30 foot fifth wheel with it all over the country and never had an issue. No overdrive was killin what little mileage the 454 would get:D.

    Ira
     
  9. Avery4jc

    Avery4jc 1 ton status Premium Member GMOTM Winner

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    true about the mpg...one nice thing I do like about my 700r is that super low 1st. Sure makes it nice since my gearing is, well lacking.

    -Avery
     
  10. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    isn't the 2wd manual the sm420?
     
  11. sandawgk5

    sandawgk5 3/4 ton status

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    It looks like it has a Dana 60 to me. Unless you are just asking a general question I really don't know.

    Edit: Got my posts mixed up disregared anything I say :}


    Ira
     
  12. thatK30guy

    thatK30guy 1 ton status Premium Member

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    In the older trucks they are. In the '73 on up trucks, they are the 465's but some trucks ran a 3 speed manual tranny, too, along with some very rare trucks in the 80's that ran a 3 speed with an overdrive to make it a 4 speed.

    GM did weird things to the truck line. :screwy:
     
  13. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    fixed it 4 ya. :)
     
  14. MTMike

    MTMike 1/2 ton status

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    Fixed it again for ya
     
  15. 8_YOUR_H2

    8_YOUR_H2 1/2 ton status

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    Well hell, I guess it dosent matter. I drove 90 miles to look at it and when I get there the guy says...I told you about the dropped valve right?

    Ummmm...no...

    :doah: :mad:
     
  16. atho

    atho 1/2 ton status

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    No. The 2wd is still a SM465.

    Now if we are talking a '67 or older truck, all the 4 speeds were 2wd SM420's, 4x (divorced xfer) or 2x.
     

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