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  1. barrymattern

    What is this on the sm465?

    I'm glad you're asking these questions because I've never had a good idea of what I have in terms of year, so this is helpful. Attached are some pics that show the full combo, the adapter from both sides, and the t-case on the adapter side. Do these help with identifying things?
  2. barrymattern

    What is this on the sm465?

    Yeah, I was surprised to see it on the other side in the pic above. I'm not sure what mine is out of as I bought it from someone already pulled from a truck – they didn't say what it was out of or what year. I've included a pic of the combo from when I received it, and from looking into the...
  3. barrymattern

    What is this on the sm465?

    I have the spacers on the passenger side (albeit, different sizes), but you're right, none on the driver's side – unless you're referring to different spacers? I was under the impression from other forum posts they may not be necessary, but could be useful if you needed to change the level of...
  4. barrymattern

    What is this on the sm465?

    Thought I'd add this pic to the mix – this is the ratio adapter on my SM465/NP205 setup. I had no idea what it was until recently when we were working on this project to swap out my TH350 with the SM465/NP205 combo. If it helps, the driven gear inside the NP205 also has different varieties with...
  5. barrymattern

    C10 to K20 Body Swap – Driveline Issues

    Good to know that it seems to be the common consensus that the issue is probably the length of the trans/tcase combo – I feel a lot more confident in the decision to move the trans/tcase forward. Our next steps will definitely be to place the cab on the frame and see how it all lines up based on...
  6. barrymattern

    C10 to K20 Body Swap – Driveline Issues

    Good thoughts – that confirms what we were considering for our next steps. We had built a wood support to lift the cab with (as you did with yours), so we'll plan to use that to place the cab on the frame to see how everything aligns (e.g. engine, transmission shifter, etc.) and adjust things...
  7. barrymattern

    C10 to K20 Body Swap – Driveline Issues

    TL;DR: I'm in the middle of body swapping a 1985 C10 cab & bed onto a 1984 K20 frame. The frame was purchased without a front clip, engine, or doors so specific truck options are not known. After decoding the VIN I confirmed the donor truck/frame is a Canadian truck that had a 6.2L diesel, and...
  8. barrymattern

    K20 vs. K30 Difference

    Good to know about the glove box door and metal plate – the truck didn't have doors when I purchased it so I'm missing a lot of option information. There was a label on the inside of the glove box, but I didn't see the option code listed on it, unfortunately
  9. barrymattern

    K20 vs. K30 Difference

    I think you're right – after spending quite a bit of time researching the vehicle information kit all the specs I'm seeing on my frame match that C6P option. Kinda surprised the full float rear end wasn't included given all the other HD upgrades
  10. barrymattern

    K20 vs. K30 Difference

    Thanks to everyone for all the info and help in trying to figure this out – I've learned a lot in this process. I should have posted some measurements earlier, but I wasn't near the frame recently until this last weekend. Here's what I found out: * Engine: 6.2 Liter (J code) *...
  11. barrymattern

    K20 vs. K30 Difference

    @Blue Ox Thanks for sharing this info, very helpful. Looking at my VIN it looks like this truck is a "J" code diesel as well, along with a "G" code for brakes: 8001-9001 lbs (Hydraulic only brakes). Based on this and your info it sounds like it could be an HD K20?
  12. barrymattern

    K20 vs. K30 Difference

    Yeah, it's a big project that keeps getting bigger as we go, but thankfully I'm able to work on this with my dad who has been a mechanic/body-man for the last 50 yrs. If not for him and his knowledge this wouldn't even be possible. I love it though, it'll bring new life to the truck that has...
  13. barrymattern

    K20 vs. K30 Difference

    Good to know, thank you both for confirming!
  14. barrymattern

    K20 vs. K30 Difference

    Hi All, I'm newer to working on these trucks, and I'm just getting started on a project to turn my 1985 Chevy Scottsdale C10 automatic into a 4-wheel drive manual. I recently purchased a donor 1984 Chevy Scottsdale that was sold to me as a 3/4 ton K20, and the plan is to swap the '85 body onto...

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