Switch Pitch in a ‘64 Riviera

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

  1. 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" Staff Member

    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 Founders Club 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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