Convert standard manual valve body to reverse - what is needed?

Transmission and Drivetrain Tech

  1. cudajames

    cudajames FABO Gold Member FABO Gold Member

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    Looking for insight on what I should expect converting the standard manual valve body to a reverse manual valve body on my 904?

    The transmission and converter were built by Dynamic a little over 2 years ago. Everything is running fine. I just really do not like upshifting toward drive. I’ve missed a time or two in spirited driving.


    To convert from standard to reverse do I have to replace the entire assembly?

    If I need to replace the entire assembly, should I go with something from Hughes or TCI or other?

    Thank you for the knowledge as I start to dig into this project
     
    Last edited: Nov 24, 2020
  2. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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    I would buy a reverse manual valve body....

    I would look at Turbo Action or maybe Cope Racing Trans.....
     
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    • jimjimjimmy

      jimjimjimmy lobsterman FABO Gold Member

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      i have a 904 with a Turbo Action rmsvb it works awesome but it does not have low band apply but i think John Cope just came out with a low band apply rmsvb i understand it makes a stronger transmission , it maybe worth looking into .
       
    • CudaFactHackJob

      CudaFactHackJob FABO Gold Member FABO Gold Member

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      Eliminating the band apply in manual first generally creates a quicker car because it eliminates 1-2 shift overlap. I like to set stockers up to race in D or 2 so the 1-2 shift is cleaner. Set up the trans for the 1-2 in D the way you like it, then do the 2-3 manually.
       
    • MoparMike1974

      MoparMike1974 Well-Known Member

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      A&A transmission reverse manual valve body with 4.2 lever bolt in sprag and billet servo. Awesome combination. Extremely firm positive shifts.
      You just gotta be real careful not to shift back into 1st until you pretty much have come to a stop.
       
    • cudajames

      cudajames FABO Gold Member FABO Gold Member

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      Thank you for the help, I will be pulling the trigger on either the CRT reverse manual valve body (with low band) and servos or go with the A&A Transmission same combo.
      I heard that CRT copies A&A

      I also will be taking the opportunity to upgrade my pan to probably the summit deep pan. Black Friday pricing
       
    • 33IMP

      33IMP Well-Known Member

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    • MoparMike1974

      MoparMike1974 Well-Known Member

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      I was mistaken, I have a COPE rmvb with low band apply. Great valve body. Works much better than the old Cheetahs I ran in the past.
       
    • 1994redram

      1994redram FABO Gold Member FABO Gold Member

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      I have a Cope RMVB in my street driven dart. I absolutely love it. Im using the factory console shifter with the Cope "shift R gate". Or whatever its called. It all works pretty well.
       
    • cudajames

      cudajames FABO Gold Member FABO Gold Member

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      I am toward the COPE rmvb w/low band with the servo kit. There are two options; the street-2x which is rated at 140psi (https://www.coperacingtrans.com/?product=crt-727-904-pro-street-reverse-manual-valve-body) and the race-22x which is rated at 155psi (https://www.coperacingtrans.com/?product=crt-727-904-race-reverse-manual-valve-body). I didn't see a psi rating on any other mvb.

      I assume the race-22x has crisper shifting that puts more wear on the transmission? And the street doesn't put as much wear? Am I understanding this correctly

      My car will spending 99% of street
       
    • cudajames

      cudajames FABO Gold Member FABO Gold Member

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      A 1966 factory column shifter - probably why I really disliked the standard manual valve body

      IMG_3873.jpg
       
    • 33IMP

      33IMP Well-Known Member

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      Im using the factory column shifter with my rmvb in my 69 runner. The detents have been modified, tap the shifter down from first (previously drive) for 1-2 change, then tug towards you, and down for 2-3.
      I love the way mine works, even if you pull on the first shift, it only goes into third.
       
    • MoparMike1974

      MoparMike1974 Well-Known Member

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      I use my factory console in the 73 dart sport. Works great with reverse manual. I wouldnt use it with a forward manual, too risky.
      As far as the PSI, email cope and ask them. I just got the street version and im really happy with it. Anytime you get firmer positive shifts it will cut down on trans wear because there is less clutch slippage. Might be harder on U-Joints though :) She chirps second gear everytime, I love it.
       
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      • RustyRatRod

        RustyRatRod Lemmie see your b00bs. FABO Gold Member

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        All that's covered in the MP books, but there's no way to make it a front band apply if you want that from what I remember. I would just get an aftermarket valve body like I wanted it. John Cope can help you.
         
      • jimjimjimmy

        jimjimjimmy lobsterman FABO Gold Member

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        please explain the differences that you find between the two .

        thanks.
         
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        • 70aarcuda

          70aarcuda Master Hoader of SBM FABO Gold Member

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          Got a TA cheetah valve body in one car that I bought back in 1983....still can chirp second gear....Mine has no low band apply in 1st.....No problem...

          Dont like the down shift braking in 1st gear.
           
        • cudajames

          cudajames FABO Gold Member FABO Gold Member

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          After talking with John at CRT, I went with the race version - which he recommended based on my setup. I also ordered the thicker band strut, 4.2 lever and of course the servo kit. And from summit a new deep pan - with drain plug. Black Friday all about the transmission
           
        • MoparMike1974

          MoparMike1974 Well-Known Member

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          The biggest drawback to the cheetah is it does not have low band apply. I had a sprag blow on me last year which is why I went this route. Amazingly my numbers matching 727 case survived the sprag failure. When it went it was very violent. Just glad I have skinny tires on that car or things could have been a little different.
           
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