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Technical Manual valve bodies......

Discussion in 'Traditional Hot Rods' started by 6sally6, Dec 12, 2023.

  1. 6sally6
    Joined: Feb 16, 2014
    Posts: 2,880

    6sally6
    Member

    How many of you fellas are using a FULLY manual valve body behind you street machines ?!
    I know there are plenty of "tricked-up" A/T with shift kits/shift 'improver' kits but how many use the full manual A/T?
    I wonder about the life of one one the street...... (How many fellas forget to down shift or up shift while driving in traffic?)
    Any remorse in doing it?
    I'm thinking about the streetability of doing such a mod.
    (It seems like a cool mod with a capital COOL!)
    6sally6
     
    mad mikey likes this.
  2. squirrel
    Joined: Sep 23, 2004
    Posts: 59,183

    squirrel
    Member

    33k miles on this one, full manual 400. Not a problem. Also has a switch pitch converter up front with a toggle switch, and a GV overdrive behind it with a manual engagement button and a tricky relay. So I get to do all kinds of fun things with the shifter.

    20230720.jpg

    shifter2020.jpg
     
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  3. 19Eddy30
    Joined: Mar 27, 2011
    Posts: 3,371

    19Eddy30
    Member
    from VA

    Yep ,,
    You need to know how to drive / use thoe , like changing gears with a stick No clutch & less like poor mans Lenco
     
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  4. squirrel
    Joined: Sep 23, 2004
    Posts: 59,183

    squirrel
    Member

    oh...also keep in mind that there are reverse pattern manual valve bodies, which are kind of tricky to deal with on the street.
     
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  5. RmK57
    Joined: Dec 31, 2008
    Posts: 3,040

    RmK57
    Member

    Does your turbo 400 have the extra neutral below 3rd gear?
    I see yours has the regular pattern.
     
  6. Some of them you can't downshift, so check that with the manufacturer you intend to use.

    I run a reverse full manual th400, I wait till I'm almost stopped before going from 3rd to 1st. My only recommendation is to have some kind of cup holder because it gets busy making a turn then shifting, especially if you have a stiff gear in the rear and non power steering.
     
  7. I would have to say "why?"
    I think the novelty would wear off pretty quick. Mr.Forbes not withstanding, but he's a special case.;)
     
  8. If you have to ask then you wouldn't understand
     
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  9. No, I don't. But thanks for the help.
     
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  10. squirrel
    Joined: Sep 23, 2004
    Posts: 59,183

    squirrel
    Member

    Making a vacuum modulated transmission shift at the right time with a blower, under all conditions, is kind of tricky. A full manual valve body does away with that issue.

    And it's fun.
     
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  11. lumpy 63
    Joined: Aug 2, 2010
    Posts: 3,312

    lumpy 63
    Member

    I have a reverse full manual in my 57 and I have driven several other fast street cars for years with them. Most of my cars have 3 pedals so I suppose I like full control of gear changes.
     
  12. lumpy 63
    Joined: Aug 2, 2010
    Posts: 3,312

    lumpy 63
    Member

    I do have a clutch T400 that I would love to try one day , but I've heard they are pretty harsh on the street.
     
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  13. TA DAD
    Joined: Mar 2, 2014
    Posts: 1,560

    TA DAD
    Member
    from NC

    If you go with a RVPMVB most have no engine braking in 1st or 2nd gear and take some special consideration driving on the street. So depending on what you are doing with the car that can be a big factor. But there are a lot of valve bodies to choose from today.
     
    Last edited: Dec 13, 2023
  14. Dooley
    Joined: May 29, 2002
    Posts: 3,088

    Dooley
    Member
    from Buffalo NY

    I have a full manual with a glide in my 36.
    course it easy when you just have 1st and drive, but I don't mind.
     
    Driver50x likes this.
  15. 29Sleeper
    Joined: Oct 25, 2023
    Posts: 400

    29Sleeper
    Member
    from SoCal

    I built a full manual Torqueflite for my 70 Road Runner when I swapped in a good 440. It was still in it when I sold it around 1973. I used all the B&M stuff valve body, clutches, convertor, even their blue trans fluid. The only thing I didn't like about it on the street was the higher stall speed.
     
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  16. 1971BB427
    Joined: Mar 6, 2010
    Posts: 9,661

    1971BB427
    Member
    from Oregon

    I have a full manual valve body on my TH350 in my Austin gasser for 13 years and 20,000 miles now. Works just great and between the drags and even more street miles it's never given me any problems. There was a little learning curve at first because it coasts freely in 1st or 2nd if you let off the gas. And of course it starts out in whatever gear it's in if you forget to down shift back to 1st.
    [​IMG]
     
  17. bchctybob
    Joined: Sep 18, 2011
    Posts: 5,765

    bchctybob
    Member

    This must be the case, because when I bought my Austin it had a full manual TH350. Fun, I thought. But you couldn’t downshift it without locking up the rear tires. That made it just about impossible to drive around my neighborhood. I removed the manual valve body and replaced it with one that holds it in any gear until you move the lever, much better. (From TransGo, IIRC) I used a B&M vacuum interface for modulator control and it works fine.
    I put a C&O ClutchFlight in my ‘33 many years ago and Weber provided a 9 roller pressure plate and a clutch disc with springs designed to take some of the shock out of gear changes. It worked ok but driving around normally, it always barked the M&Hs. Now that one was fun….
     
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  18. My trans is a full manual reverse pattern, no engine braking in 1st. Works great and is fun to shift with my lightning rods type shifter.
     
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  19. RmK57
    Joined: Dec 31, 2008
    Posts: 3,040

    RmK57
    Member

    If it’s a reverse pattern what happens when you have catastrophic engine trouble at 120 mph?
     
  20. 1biggun
    Joined: Nov 13, 2019
    Posts: 869

    1biggun

    Had a manual power glide . was not reverse pattern and I wished it was but other than the it ws no big deal to shift it by hand .

    Chevy even made there own version power glide that was manual shift .
     
  21. TA DAD
    Joined: Mar 2, 2014
    Posts: 1,560

    TA DAD
    Member
    from NC

    You mean because you are away from neutral ? Unless you have a trans with a clean neutral you don't want to put it in neutral at speed. Same with no engine braking you got to watch down shifting as it might come through the floor.
     
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  22. squirrel
    Joined: Sep 23, 2004
    Posts: 59,183

    squirrel
    Member

    the Torque Drive.
     
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  23. Kevin Ardinger
    Joined: Aug 31, 2019
    Posts: 1,012

    Kevin Ardinger
    Member

    You have to remember, most of these were only made to upshift, they are not made to downshift. There is no engine braking. So, in my opinion, the best way to drive it is, upshift to high and when you come to a stop you pull it all the way back down to first and start over.
     
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  24. TA DAD
    Joined: Mar 2, 2014
    Posts: 1,560

    TA DAD
    Member
    from NC

    That is right, the intermediate band is left out to reduce drag and the main function of this type trans is to up shift. I have this set up in my old Studebaker but it is not built for cruising. Down shifting at speed is ok as long as you are on the throttle or going slow .
     
  25. squirrel
    Joined: Sep 23, 2004
    Posts: 59,183

    squirrel
    Member

    I'm glad I don't have a racing transmission...just a manual valve body on a normal transmission. Makes driving simple.
     
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  26. TA DAD
    Joined: Mar 2, 2014
    Posts: 1,560

    TA DAD
    Member
    from NC

    Oh yeah your better off, mine is what I had on hand so that is what I used. You don't want to loan it out to a novice !
     
  27. saltflats
    Joined: Aug 14, 2007
    Posts: 13,225

    saltflats
    Member
    from Missouri

    I used the trans go kit for the th350 in the race car, it has engine braking.
    I would be scared to try a reverse manual, I would move the shifter the wrong way every time.
     
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  28. 1971BB427
    Joined: Mar 6, 2010
    Posts: 9,661

    1971BB427
    Member
    from Oregon

    Mine only locks up the rear tires if I downshift into 1st gear. If I do downshift to 1st I need to be going less than 5 mph, or it's pretty violent.
     
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  29. birdman1
    Joined: Dec 6, 2012
    Posts: 1,675

    birdman1
    Member

    I had a fully manual c4 behind the 351c in my 1955 t-bird. Really liked it
     
  30. The Henry J and the 41 pickup both had the exact same shifter except the J was standard forward pattern and the 41 is reversed, talk about confusing after you swap cars after a couple weeks.
    That's another reason I'm swapping shifters in the 41 !
     

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