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th400-205 setup?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by DesertDueler, Jan 22, 2002.

  1. DesertDueler

    DesertDueler 1/2 ton status

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    What vehicles came with this setup? I know 1 tons and 3/4 ton burbs, but not sure for what years. I need to do this so the Burb can tow better. Thats all I need to complete my 1 ton coversion. Or if anyone has one for sale complete with driveshafts, crossmember, and shifter let me know.
    Thanks Dan

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    BTW I have a 700r4 and 208 to trade if anyone is interested. The tranny is A GM SRTA tranny with full 3yr/50,000 mile warranty, and the 208 has 59,500 miles on it.

    86Jimmy 4"&35"MTRs,87 burb 4"&33"MT,69Firebird w/525 hp,and 70GTO live in PHX,AZ<a target="_blank" href=http://www.geocities.com/modifierperformance>My vehicles</a>
     
  3. nvrenuf

    nvrenuf NONE shall pass! Premium Member

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    I'm not sure of the first year but I know GM used it starting in 80. The combo could have come in 3/4 or 1 ton trucks or Suburbans until 90. FYI - 91 had a 4L80E trans and a NP205, the only year of that combo.

    Somewhere in the early / mid 80's they introduced the 400 / NP208 combo, so don't assume heavy duty truck = NP205. I've seen K30's with both combos but I've never figured out the reason.

    There are 2 styles of crossmember so depending on the year combo you get you may need the appropriate piece. FYI again - a K30 crossmember is different than a 1/2 or 3/4 ton due to the depth of the frame.

    80 K10 w/ 468 and 1 ton stuff
    I got chunks of guy's like you in my stool!
    www.nvrenuf.fws1.com
     
  4. Seventy4Blazer

    Seventy4Blazer 3/4 ton status

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    there are a few for sale in the parts wanted area. i decided to make a th400 np205. this way i can get the doubler faster. i can get a np205 and build it to TH400 specs for $650. rebuilt. so i am going to go this way.
    Grant

    1974 Chevy Blazer Cheyanne. but it is on 33's now, with saggy old springs. i am in Yuma Arizona if ya got any parts for me.
     

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