sm465

  1. Frye442

    Intro

    I'm somewhat new to squares. I've owned them and worked on them since I was 15-16 (I'm 31 now) I'm looking at buying a 454 big block for my 86 K20, Sm465 trans. But it has a set of pistons I've never seen before, I attached an image. My gut is telling me they are a type of domed pistons for what...
  2. 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...
  3. M

    1979 k10 clutch sticks and only works half way

    So I just did an Ls swap on a 1979 k10 stepside. I put a 2005 5.3 with the original transmission which is a sm465. I had trouble with this before the motor swap but now I’m going to address it. You can push my clutch pedal halfway down before the clutch engages. And when you to lift your foot it...
  4. Storydad92

    Hello from Southern Indiana

    Well, hello there all the folks who are life savers and headache averting pool's of knowledge. I've been lurking for quite some time, and finally decided to create an account and take a more active role in being a part of this community, even if it means doing the stupid things that others would...
  5. Y

    87 tbi

    Hey all! I have a pretty cool 87 long bed with 465 manual tranny with the granny. I did the bodywork myself and you can tell, but it’s not terrible. No rust. Runs and drives really well with almost new tires. The four-speed on the floor is nice. Air-conditioning compressor kicks on, but doesn’t...
  6. R

    SM465 output shaft bearing

    I have my transfer case and adapter out of my truck, cleaning and resealing. I noticed the bearing locknut is locked with a tab on it but the nut moves easily by hand- it is not going anywhere but I was wondering if it should be tighter? The truck is an all original 76 K10 that was not abused...
  7. J

    Clutch Linkage

    I recently replaced the clutch assembly in my 80 c20 however the clutch pedal feels out of wack. It also shakes... like a lot. I believe that it's due to the pushrod that pushes the clutch fork is not adjusted properly. Does anyone know the proper way to adjust the linkage? thank you for your help.
  8. E

    Will my 12" clutch fit on the stock flywheel?

    Hi everyone, First of all, sorry if this has been answered elsewhere, I couldn't find a thread that really answered my question. I bought a clutch for my truck (350sbc with a SM465 behind it) and I am trying to figure out if I need a larger flywheel or not. The block is a 3970010, meaning it...
  9. E

    Hi There!

    Hi! My name is Ed, and I'm new here. I fell in love with square body's as a kid when my dad bought a K5 Blazer, and that love was reaffirmed later when he bought an '87 GMC Sierra K25. I currently own a '87 GMC R3500 dually. Its and old dump truck (doesn't have the dump bed any more). It...
  10. R

    Can't separate SM465 adapter from NP205 TCase

    Hi all, Tcase seems to be stuck to the coupler inside the adapter? Need some help on splitting the two for a rebuild.
  11. Preston Tucker

    Rare (ish) 1974 gmc k20!

    Hello every body! I am new to the site but it is the best thing that has happened to me so far! Its awesome, you all are. I am taking on a full restoration of a 1974 gmc k20 that i saved from the junkyard for a price of 50 dollars. Its no gem but is not just the average rusty squarebody! It was...
  12. J

    A short intro...

    ...by another "new" guy. Long time lurker, forgot I hadn't posted an intro. I'm here to learn as much as I can soak up. I have a two-owner '77 GMC 1/2 ton 4x4, factory 350, Muncie SM465 with a NP205. I purchased it in '85 from the original owner who is a friend (so I know the history), and...
  13. Dleighton

    454 swap clutch/ flywheel question

    Hi, first post here. I have a 1986 k10 that I am building a 454 for, to put in place of the 350. My truck has the sm465 transmission. I am aware I need a 454 specific flywheel, which I have already gotten. (Perfection clutch 50-6531). My question is, will this flywheel work with the 3 finger...

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