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machining an np205

Discussion in 'The Garage' started by muddyblzr, Jan 12, 2006.

  1. muddyblzr

    muddyblzr 1/2 ton status

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    from what i hear when you go from a 10 spline input to a 32 spline input you have to machine the case to fit. what all is needed to be done? i found a 10 spline 205 pretty cheap and i was just gonna swap in the 32 spline input for my doubler
    anyone have any knowledge to share on this?
     
  2. marv_springer

    marv_springer 1/2 ton status

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    I may be able to help....

    I know of a different bearing and spacers that you can use and not have to machine.... if you are using an ORD Doubler adapter.

    Marv
     
  3. camiswelding

    camiswelding 1/2 ton status

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    use the large style th400 bearing... give 40 bucks or less to your favorite machinist.. tell him to size it to a slight press fit
    bam... have a late model case....
    ORD talked me thru this... it was easy

    cam
     
  4. muddyblzr

    muddyblzr 1/2 ton status

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    alright sounds good. im gonna be going with a wms adapter so i can have the 203 upside down. i know a few machinist maybe a good lunch and some beer will cover it. does anyone have the specs on this bearing?
    what exactly do they use to machine it out?
     
  5. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    best thing to do is to actually get the bearing and give it to the machinist so they get it right the first time.

    j
     
  6. muddyblzr

    muddyblzr 1/2 ton status

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    after i posted i thought about that and i agree. when i get the t-case ill be picking up a bearing as well. anyone got a part number on this. ill head down to o'reilly now and see what they got for me
     
  7. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    nope, sorry. AFAIK its the same bearing as they use on all the married Ford cases (31-spline) though, if you need to look it up in a parts catalog or something. I'm gonna get a full rebuild kit for my 205 when I get it machined so I've never looked for a part number for just the input bearing. NWF or ORD could prolly help.

    j
     
  8. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    This is very true since there is no second time if the hole is made too large. :deal:
     
  9. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Numero Uno needs to get me some part numbers :D
     
  10. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Once machined (or using Marv's bearing) you can also use the Ford 31 and save some dough if you don't want to fork out for the relatively rare 32 spline GM input. Same thing, same size, same length, just one less spline. But make sure you tell them when you order the adapter. This is what I run.
     
  11. muddyblzr

    muddyblzr 1/2 ton status

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    my friend has a some t-cases he said i could pick through for the 32 spline stuff and the inputs. if i cant get a 31 or 32 spline input out of there ill just fork over the extra dough for the short 32 spline nwf sells. its 125$ i believe
     
  12. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    alternatively, NWF has used 31-spline ford inputs. They couldn't be toooo expensive, if I remember right for awhile there Kyle was including them with doublers for free if ya needed one.

    j
     
  13. steve_kibbe

    steve_kibbe 1/2 ton status

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    I have a ford 205 I picked up for $100. Has 32 spline outputs, fixed rear yoke and a 31 spline input. You can get all three shafts for cheap like I did, 2 out puts and one input.
     
  14. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    That's exactly what I have. Ford 32 spline outputs with 1410 yokes, 31 input, and a GM twin-sticked case.
     
  15. JeffHK5

    JeffHK5 1/2 ton status

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    Factory bore for the "big" bearing is 3.550, the bearing measures 3.543. Yep it's that sloppy! I have done about four of these 205 upgrades and I have had the best luck with 3.548.

    I was taught over the phone/internet by Kyle from NWFW, he is a great guy and will help any way he can!

    Jeff
     

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