98'10speed change to 13sp

Discussion in 'Trucks [ Eighteen Wheelers ]' started by CleverNDGuy, Jun 10, 2018.

  1. CleverNDGuy

    CleverNDGuy Light Load Member

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    I'm looking to acquire a 98 fld that has a 10 speed transmission. Is it even possible to have it changed over to a 13 speed? If so what else is necessary for it to be right?

    I'm only asking because i heard it being talked about.
    Also what is a an high and low estimate
     
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  3. mover man

    mover man Road Train Member

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    Again I am not a mechanic. Many 9 speeds can be converted to 13. But a 10 speed cannot be converted. You would have to replace the trans if you wanted to go from a 10 speed to a 13
     
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  4. lester

    lester Midwest's #1 Feed Hauler

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    Anything is possible. A 13 is longer I'm pretty sure so you'd need to have your drive shaft shortened. Also if you just plan to purchase a 13 without a like core expect to pay a large chunk of change
     
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  5. BoxCarKidd

    BoxCarKidd Road Train Member

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    To begin with what model of ten speed are you talking about?
     
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  6. CleverNDGuy

    CleverNDGuy Light Load Member

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    Excuse my ignorance but I thought I could get away with a couple generic question to see what my limitation are but. Now I know I can poop can the 10 to 13 conversion and just aim for a 13 speed or plan on having one installed.so now the research for that .

    I don't have a model to give you since I'm only in the research stages and haven't acquired anything just yet.

    Thanks for clearing this up for me guys .wish me luck.
     
  7. Ezrider_48501

    Ezrider_48501 Road Train Member

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    you can put a 13 speed in, your have to change the entire transmission you cant convert a 10 to a 13. and shorten the driveshaft. plenty dooable its just money. lol
     
  8. lastgoodusername

    lastgoodusername Medium Load Member

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    What he said. Driveshaft will need to be shortened, new splitter on gear stick, look around though. i found a shop that took my 10 in for a core against a 13. Not often do you find it, but it is possible. I would also strongly consider a new clutch, flywheel resurface, rear main seal, pilot bearing, and new motor mounts. Also do your research on your yoke, as you don't want that to hold up the procession. Don't forget the new tranny will be empty, so you will need a 5 gallon bucket of , I suggest synthetic gear oil. That should about cover it. Hopes this helps and not deters. You will be much happier in the end.
     
  9. AModelCat

    AModelCat Road Train Member

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    Personally I'd just run the 10 speed until it craters and then put a 13 in.
     
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