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350th

  1. Drivetrain & Performance
    hello, I have been searching for info on a 350TH(made in Canada?) going into my 63 hdtp without much luck. I would just like to know as much as possible about the trans. Numbers I've found, on the side of the pan J4H10D, on the right side of the trans 338999, on the left side CFD3, behind the...
  2. Drivetrain & Performance
    i bought a 350th and the guy said he put a stage 3 shift kit in and said he didnt have to drill the valve body. But what i have heard is you have to drill the valve body. it skips 3rd and goes into neutral at high rpms. Any one have any ideas. no matter where you adjust it does same thing.
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