Switch Pitch in a ‘64 Riviera

Discussion in ''Da Nailhead' started by 64xp715, Feb 20, 2019.

  1. GranSportSedan

    GranSportSedan Puppet dictator, wife has all power

    I think the passages cast into the case in the valve body area are different in 64 vs 65 and later. I have a bare 65 case I can take pictures of if you want to compare
     
  2. bigcat

    bigcat Member

    Thanks, I have a few cores myself. Studying my books and service manuals it looks possible. I don't want to lead anyone a stray. If someone has tried this before and it doesn't work I would like to learn from their experience.
     
    GranSportSedan likes this.
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD"

    I have always heard that the 64 was stand alone different in a number of ways that make it incompatible with later valve bodies and other parts.
     
  4. telriv

    telriv Well-Known Member

    Larry is correct!!!!
     
  5. bigcat

    bigcat Member

    Getting back
    Did you get a chance to try this transmission out before you installed it? I rebuilt the 65 trans I put in my 64 before installing. While the fluid didn't look bad there was quite a bit of rust in the valve body. Something to think about. Ken
     
  6. doc

    doc Well-Known Member

    I have 3 of those transmissions....:D
     
  7. bigtorque5

    bigtorque5 Well-Known Member

    the 64 is a crossover trans,all by itself
     
  8. doc

    doc Well-Known Member

    kind of like , everybody thinks the trans that was behind the 300 engine is a power glide because it was a 2 speed.... but it aint.... ;);)
     
    300sbb_overkill likes this.
  9. Schurkey

    Schurkey Silver Level contributor

    The '64 TH400 (Super Turbine 400) has a one-year valve body...for a "400"

    A similar valve body was used in the TH425 front-drive variant, and those were switch-pitch in '66 and '67 model year. A shift kit for a 425 works in a '64 400.

    IF (big IF) the case of the '64 has the proper drillings, it should be possible to convert it to switch-pitch. I don't know if the case is compatible.
     

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