Options for 350 and 455

Discussion in 'U-shift em' started by Donuts & Peelouts, May 22, 2017.

  1. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    What are my options in manual transmissions for both the 350 and the 455. Thanks alot
     
  2. agetnt9

    agetnt9 Agetnt9 (Dan)

    Wow! Alot...... 3, 4, 5, 6 speed with all sorts of clutch & flywheel choices .
     
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  3. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Will the t56 bolt to both? I suppose the t5 will also then, since you said 5 speeds?
     
  4. flynbuick

    flynbuick Guest

    An important consideration is whether your crankshaft is already drilled and fitted with the correct diameter pilot bearing. To do a conversion to a manual trans Muncie 4 speed with all the correct parts takes about $3500.00. Also do not forget Buick made some of these cars with 3 speed Ford and Muncie manual transmission. Perhaps Saginaw too.
     
    Last edited by a moderator: May 23, 2017
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  5. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Good point.
     
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  6. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    I did not consider this or even know it would be an issue. Can someone tell me why.
     
  7. flynbuick

    flynbuick Guest

    Not all cranks are drilled. Even if they are drilled, it may need some rework.
     
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  8. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    And if they are not drilled, can a good machine shop drill the crank?
     
  9. gstewart

    gstewart Well-Known Member

    I know that the crank on my 350 is not drilled. Then again, I am not about to convert to a 4 spd
     
  10. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Hey guys. Bringing this thread back, I'm looking at getting a 455. I want a manual. And overdrive. So any input please on mating a 455 to a viper t56. I got some one selling a viper t56 in my area for 800. Is 6 speeds 2 much? I want to be able to go on long trips and kick ass off the line.
     
  11. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

  12. flynbuick

    flynbuick Guest

    How much of the drive tunnel will have to be removed?

    We have a 6 speed in Trinity Shelby. Depending on the rear tire size and first gear ratio in the trans the rear gear will need to be maybe 3.73 to 4.10.

    Your crank will need to be bored for the correct bearing for the input shaft.

    You make need a special adapter made so the shift lever will exit the drive tunnel at the correct location.

    Are you using a hydraulic clutch set up?

    You may need wider tires and rims just to get traction with the new set up.

    Are prepared to spend several thousand dollars?
     
    Last edited by a moderator: Jun 4, 2017
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  13. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    I am not prepared to spend several thousand on the swap. I could do 4k. But nothing over 8,9,10k.

    I like finding/getting deals. But understand that some parts NEED to NEW and OF GOOD QUALITY.

    I plan on doing this swap myself with help from my mentor who lives in Utah (I'm in CA) and others I've met.

    Where in your experience do you think the bulk of money will go. I see the mcloud bellhousing going for around 500.

    My market has produces these parts.
    455= 400-1k running
    T56= 800-1k working
    ....
    Honestly I'm ignorant to what clutch set up I need.
    ..
    I'm curious to how In your mind's eye you can estimate I might have traction problems. I wish I could see what u are seeing.
     
    Last edited: Jun 4, 2017
  14. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    One day I'll get it all, but by then cars will be flying lol and gasoline will be obsolete.
     
  15. flynbuick

    flynbuick Guest

    The first question is perhaps which t 56 and what is its max torque rating. They vary from about 350 to 550 foot pounds depending on their original application.
     
  16. Donuts & Peelouts

    Donuts & Peelouts Life's 2 Short. Live like it.

    Viper t56, which is rated at 600-650 tq I believe
     

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