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Technical Early chevy 3-speed synchronizers (SM 318)

Discussion in 'The Hokey Ass Message Board' started by mechanic58, May 4, 2014.

  1. mechanic58
    Joined: Mar 21, 2010
    Posts: 681

    mechanic58
    Member

    Anyone know where to get'em? I bought a rebuild kit for $98...came with all the bearings, thrust washers, seals and gaskets - but no synchros. There's only two in it. I can't find listings for them anywhere.

    Edit: Actually according to the ipb there's just one "synchronizer", but that assembly actually has a bronze synchro on either end of it that does come out.
     
    Last edited: May 4, 2014
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 46,851

    squirrel
    Member

  3. mechanic58
    Joined: Mar 21, 2010
    Posts: 681

    mechanic58
    Member

    Yeah - that thing actually has about 7 pieces to it, 2 of them being a traditional looking bronze synchronizer. I would think you could buy just those pieces.

    The two grooves cut into the side of it here on either end are where you access an internal snap ring to allow removal of the actually synchronizers.

    [​IMG]
     
  4. squirrel
    Joined: Sep 23, 2004
    Posts: 46,851

    squirrel
    Member

    I think they pressed the bronze rings in, then machined them concentric with the rest of the part, making it into one assembly that must be replaced in it's entirety. Good design for making money for the parts department.
     

  5. fordcragar
    Joined: Dec 28, 2005
    Posts: 3,180

    fordcragar
    Member
    from Yakima WA.

    Squirrel is right, it is an assembly and they didn't service any pieces. I used to pull the bronze rings out from abusing the transmission (that's another story). I modified a pair of snap-ring pliers to let me pull the syncro blocks out and then tap the bronze rings back in and restake them. Then re-install the blocks. Almost like a new syncro.
     
  6. Dyno Dave
    Joined: Feb 18, 2011
    Posts: 248

    Dyno Dave
    Member

    the Filling Station 2013 catalog p. 326 shows; #RW-453 for 1937-1954, 3-speed brass syncro ring - use with original housing - 2 req'd @ $35.00 ea.

    info# 541-258-2114 online: www.fillingstation.com order# 800-841-6622

    I've ordered a number of parts from these guys based in Lebanon, OR. their're good to work with...dyno dave
     
    Last edited: May 5, 2014
  7. squirrel
    Joined: Sep 23, 2004
    Posts: 46,851

    squirrel
    Member

    54 and earlier is different from 55 up.
     
  8. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,358

    56sedandelivery
    ALLIANCE MEMBER

    DriveTrain.Com will have the parts you seek. Look/click on the Muncie 318 parts column. n nButch/56sedandelivery.
     
  9. mechanic58
    Joined: Mar 21, 2010
    Posts: 681

    mechanic58
    Member

    Thanks for all the input fellas.
     

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