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77 k5

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by skelly1, Dec 30, 2002.

  1. skelly1

    skelly1 1/2 ton status

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    What are the goods and bads about the 1977 model? Axles? There was a thread that was a couple weeks ago that claims 77's the last year of the big beds? What does that mean?
     
  2. dyeager535

    dyeager535 1 ton status Premium Member

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    Means that '78-up passengers could actually put their feet on the floor /forums/images/graemlins/smile.gif

    '78-ups the floor in the passenger area is the same level all the way to the rear seat, before that, the bed extended at the same height all the way to the back of the front seats.
     
  3. Silver84k5

    Silver84k5 1/2 ton status

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    on the top of this page there is a list of things, one of them is "specifications, look up 77, and it will tell you everything the truck, as for the Axles, half ton axles are half ton axles there is really nothing special about any of them, Some people make them last forever, others bust em up backing out of their driveway.....
     
  4. skelly1

    skelly1 1/2 ton status

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    Interesting. When did the Dana44 become the 10 bolt? When did the 10 bolt replace the 12 bolt in the rear?
     
  5. dyeager535

    dyeager535 1 ton status Premium Member

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    Both of those have been pondered/discussed to death, and to tell you the truth I never paid attention, because I don't care /forums/images/graemlins/smile.gif Lets just say that all K5 axle changes were complete by the early 80's. If you really want to know the specifics, just search on here. It will take awhile, there are lots of posts on them.

    Axles are one thing I wouln't base a decision to buy a K5 on, you can easily convert to a 14 bolt, and if you break a 10 bolt, you'll probably break a 12 bolt too. The strength difference IMO isn't enough to worry about, especially compared to how strong a 14 bolt is to either one.
     
  6. skelly1

    skelly1 1/2 ton status

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    I noticed in the spec section that it has an NP203 transfer case. Is this the funky one for the full time 4WD that people put a conversion kit in for what reason???
     
  7. CooknwithGas

    CooknwithGas 1/2 ton status

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    The NP203 is the full time 4wd and it is heavy and heavy duty. The part time kit goes in the NP203, yes.
     
  8. Silver84k5

    Silver84k5 1/2 ton status

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    77 is old, you have to get under the truck to see what is really in it, between 77 and 2003, There has prolly been swapped parts on it, my 77 had a 205 in it,
     
  9. skelly1

    skelly1 1/2 ton status

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    I guess if you never take the thing on the street, it's no matter anyways. Thanks for the help guys.
     
  10. HarryH3

    HarryH3 1 ton status Author

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    My '77 also had a 205 in it, but it was behind a 465. /forums/images/graemlins/cool.gif With an auto tranny they came with 203's. But indeed, any truck that old may have had a LOT of the parts swapped out. There is NOTHING stock in the entire driveline on my '75. /forums/images/graemlins/thumb.gif
     
  11. mud390

    mud390 1/2 ton status

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    I have a 77 K5. Mine came with an auto (turbo 350), backed by a NP203. It has dana 44 front and 12 bolt rear. Hope that helps. Oh yeah...lots of rust too! /forums/images/graemlins/tongue.gif
     
  12. supersize75

    supersize75 1/2 ton status

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    my other blazer is a 77 and it too has a 12 bolt rear, d44 front 350/t-350/203 set up and a konked hood to top it off /forums/images/graemlins/grin.gif
     
  13. Silver84k5

    Silver84k5 1/2 ton status

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    My 77 had a 350 th350 205. so i guess the 205 was swapped in then?
     

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