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465 Questions

Discussion in 'The Garage' started by 84 K5 4x4, Dec 20, 2006.

  1. 84 K5 4x4

    84 K5 4x4 1/2 ton status

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    Does anybodys 465 make some racket? Cause i just did a 465/205 swap in my blazer and its a little noisey. It might be because i dont have any insulation or any sound protection under my carpet. Need ideas on how to fix it.
     
  2. chris12

    chris12 1/2 ton status

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    Mines the same it has a whiney sound coming from the gears i think. Im told its normal. Not to worry.
     
  3. 1977k5

    1977k5 3/4 ton status Vendor

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    The noise is more likely coming from the sleeve that couples the the 465 to the 205 (its known for being pretty worn our with high miles) or from the 205 itself because of vibrations.
     
  4. 84 K5 4x4

    84 K5 4x4 1/2 ton status

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    What about 3rd gear is yours a little quircky to find?
     
  5. bronc3buster842001

    bronc3buster842001 1/2 ton status

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    mine never made any noise only noise i had was from the 205 shifter my 465 was pretty worn out to it would hang up in 3rd and reverse when u would try and put it into reverse course i aint got any probs with it now cause my truck was stolen a few months ago
     
  6. MattK

    MattK 1/2 ton status

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    mine's a noisy biatch. it's only annoying at highway speed.

    i have more trouble with 2nd than i do with 3rd. (if you're talkin L-1-2-3, otherwise we're talkin about the same thing) not a big deal, i dont plan on racing this thing, i just take my time shifting.
     
  7. 84 K5 4x4

    84 K5 4x4 1/2 ton status

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    Thats what i mean its 2nd if you look at the knob. But its 3rd to me
     
  8. spoolnaround

    spoolnaround 1/2 ton status

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    Most likely this is the problem along with the output shaft on the 465 and input in the 205. Your shifter could be making a bunch of noise on top of it all too.
     
  9. 79k20350

    79k20350 3/4 ton status

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    Can anybody read this:confused:

    Dude... punctuation, grammar... Hell structure:rolleyes:
     
  10. 84 K5 4x4

    84 K5 4x4 1/2 ton status

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    Any suggestions on how to quiet down the shifter on the tranny???
     
  11. cabledawg

    cabledawg Secret Squirrel Premium Member

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    Try running some Lucas Oil in the Tcase. Made a huge difference with mine. I changed it out the other day because it kept popping out of 2hi into neutral and since I never checked the fluids when I bought it this past summer, I thought it was time to take a look. Found water in the Tcase (it was stored outside until I had time to put it in) and some sludge mixed as well. Put in Lucas oil and no more problems. Runs alot quieter too.
     
  12. 84 K5 4x4

    84 K5 4x4 1/2 ton status

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    What weight do you run in it? I am runin 80/90w in mine
     
  13. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I actually run 50w in mine. Its said that it helps shift easier. I'm not so sure though it makes a difference.

    It seems to me that my 2nd gear (1-2-3-4-R) syncro is worn. On cold mornings when down shifting coming to a stop sign, while still moving it takes some serious strength to get the tranny back into 2nd. Its always done that since I got it. But I think its getting worse now. Oh and it does get better once warmed up so that 2nd feels like the other gears.
     
  14. MattK

    MattK 1/2 ton status

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    just curious, do you downshift to slow down? that might be part of the problem
     
  15. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    I do, but only coming out of top gear. When I downshift two second, I am slowing down with the brakes going up to a stop sign. Then as I am around 10 or so mph (still braking) I try to put the trans into 2nd and I have to really force it to go into gear. If I stop dead, then its no big deal to get it into 2nd. It has no problem shifting into anyother gear and it has never popped out of gear on me. After I do that 2-3 times or after it warms up then downshifting to 2nd is not problem at all.

    BTW: as I am trying to force the trans into 2nd, I can hear the gears wind up as the syncos, syncronize 2nd for me. Oh and in never grinds into any gear.
     
  16. MattK

    MattK 1/2 ton status

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    yeah im simply thinking that is the sort of thing that goes through syncros if you're having to use a lot of force. maybe you're supposed to double clutch here?
     
  17. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

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    Actually, never tried double clutching...

    I'll try it tomorrow morning :wink1:
     
  18. Russell

    Russell LB7 Tahoe Status Premium Member GMOTM Winner

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    Double clutching helps hugely for getting these things back into 2nd if you are coming to a light or something on a cold morning. I do so all the time.

    The SM465 in my 74 used to be a very noisy thing, literally sounded like a school bus barrelling down the highway. I totally rebuilt my 80's SM465 and 205 from the ground up with all new bearings, seals, bushings, syncros etc, then re-installed them with some extreme duty 80w90 that has additive to climb the gears, along with a half dose of that Lucas stuff, and it is almost scary how quiet that transmission is. You can still hear a slight whine when the syncros wind up when downshifting, but while cruising, the transmission is literally as quiet as any auto I've owned.

    Quite a nice change really :) With the all new shift forks and stuff, it has extremely clear, crisp gates with a firm shifter, it goes into a gear, and very positively locks into place.

    Well worth the 200 bucks it cost me to overhaul both!
     
  19. 1977k5

    1977k5 3/4 ton status Vendor

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    Downshifting to slow down is a bad idea, period. Brake pads/rotors are much cheaper/easier to replace than a clutch.

    Any rough shifting can be blamed on the fact that the transmission in question has 150+ or has been abused.
     
  20. u2slow

    u2slow 1/2 ton status

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    Maybe that's true if you slip the clutch a lot, or don't blip the revs before an otherwise aggressive downshift. I downshift all the time and use minimal brakes. No issues here. :confused:

    OTOH, my 465 is noisier than all get-out... and no t-case at all. :p: Driveshaft 'ringing' and the whole bit. I run 75W140. Never rebuilt one. So far I haven't been able to kill one - no matter how sorry a condition its in.
     

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