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5 spd conversion

Discussion in '365 GT4 2+2/400/412' started by Godspeed!, Oct 2, 2009.

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  1. Godspeed!

    Godspeed! Karting

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    #1 Godspeed!, Oct 2, 2009
    Things are going well with the engine out timing chain replacement and hope to post a new thread with all the interesting findings. There have been a few, all end well...........

    But........am really thinking of doing a 5 spd swap from automatic with all factory stuff. Now would be the time to do it. So, here I put out the feelers for info on who might have all the required parts. Already contacted Eurospares in UK.

    Took some time to identify all the parts from the factory parts manual, so I know what I am looking for.

    Thanks in advance for any leads

    Godspeed!
    Dave
     
  2. Ashman

    Ashman Three Time F1 World Champ
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    #2 Ashman, Oct 2, 2009
    Good luck, that seems to be a pretty ambitious job!

    Are you changing the differential ratios as well?
     
  3. Godspeed!

    Godspeed! Karting

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    #3 Godspeed!, Oct 3, 2009
    Well, in carefully reviewing all aspects, fiinding the components may be the greatest challenge. On the mechanical side, it is straight forward.

    Godspeed!
    Dave
     
  4. Fritz Ficke

    Fritz Ficke Formula 3
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    #4 Fritz Ficke, Oct 3, 2009
    I have seen 5-speed cars sell for 10K that have needs. Your best bet is to buy a whole car take the bits you need and sell the rest. With a little effort I imagine you could get every thing you need for the 5-speed for sub 5k. With more effort much less.
     
  5. ArtS

    ArtS F1 World Champ
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    #5 ArtS, Oct 3, 2009
    As long as you are doing a trans swap, why not upgrade? I suspect that soimething more recent would work better and be far cheaper.

    Regards,

    Art S.
     
  6. GrigioGuy

    GrigioGuy Splenda Daddy
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    #6 GrigioGuy, Oct 3, 2009
    Someone on here converted theirs using a Doug Nash 5 or 6 speed. Just something to think about
     
  7. Godspeed!

    Godspeed! Karting

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    #7 Godspeed!, Oct 3, 2009
    Yes! Upgrade to a modern 5spd would be great...................one big problem. The tail are of the tranny has to accept the tourque tube mounting. Not as easy as a drive shaft car.

    I have reviewed technical drawings for the T5 and other aftermarket/OE tranny's. If cost were not a concern (not me) I have the capability to design and cast a tail area which would allow the use of , I believe the T5. If there were a demand then it would be cost effective.

    Godspeed!
    Dave
     
  8. ArtS

    ArtS F1 World Champ
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    #8 ArtS, Oct 3, 2009
    Dave,

    I suspect that if you were to design and assemble a complete conversion kit (pedal box and all), you would have a market for a few conversions.

    Regards,

    Art S.
     
  9. Godspeed!

    Godspeed! Karting

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    #9 Godspeed!, Oct 3, 2009
    Hmmm, would be interesting. Let's see what the interest level is........

    Tremec or Richmond gear would allow custom ratios.

    From memory, the Richmond has a tail housing which would allow a custom casting to mate with the torque tube and strut rod. Possible.

    Godspeed!
    Dave
     
  10. Godspeed!

    Godspeed! Karting

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    #10 Godspeed!, Oct 3, 2009
    Tillman, did the guy really finish it? Thought the thread died. I suspect due to torque tube challenge

    Godspeed!
    Dave
     
  11. Ashman

    Ashman Three Time F1 World Champ
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    #11 Ashman, Oct 3, 2009
    Last edited: Oct 3, 2009
    Was it this guy? He used a GM powerplant and a Tremec 6 speed, showed a photo of the car but not the transmission, so we'll have to take his word for it. No mention of the torque tube issue.

    In the "Let's Hear From the 5 Speed Owners" thread:

    http://www.ferrarichat.com/forum/showthread.php?t=239437&page=3

    In fact, AKJim asked for photos of the transmission/torque tube interface but got no response.
     
  12. aidanparte

    aidanparte Formula 3

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    #12 aidanparte, Oct 4, 2009
    I seem to remember the Fchatter who was doing the conversion was Timp. I think he was getting bogged down with problems. I'm sure we'll hear about it when it is finally done.

    Aidan
     
  13. ArtS

    ArtS F1 World Champ
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    #13 ArtS, Oct 4, 2009
    There is a guy down south that does Jag tranny conversions, mostly B-W to GM but he might be worth reaching out to. I think his name is John - John's Jags maybe (I looked into this a long time ago and can't remember).

    Also, how critical is the torque tube? I know of a 275 GTB owner that told me that he got rid of his torque tube and put in a drive shaft with two u-joints. He was happy with the results (again, this story goes back a few years and I have no supporting evidence, nor have I done any research).

    Regards,

    Art S.
     
  14. Fritz Ficke

    Fritz Ficke Formula 3
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    #14 Fritz Ficke, Oct 5, 2009
    Since the diff. holds up the engine/trans through the torque tube, with a after market trans. you would have to build a cross frame mount for the trans. if you do not use a torque tube. Which is starting to defeat the work that Ferrari did to make the car stiff. Becouse now the twist will be in the frame. I also really like the way the Ferrari box's shifts, it is part of the 80's vintage Ferrari experince.
    Alot of this Ferrari feel will not be noticed by most peope under most drives but I would not want to lose that from my car.
    I bet it would cost more in the end to go with a none OEM trans.
    My two cents.
     
  15. Fritz Ficke

    Fritz Ficke Formula 3
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    #15 Fritz Ficke, Oct 5, 2009
    One more thing down time and laber is what kills you on coversions. You need to injoy doing the work (hobby) and and not care how long your car is down for a conversion to be cost effective.
    I have done a few engine conversions for customers and do not recomend it on money basis.
     
  16. 246tasman

    246tasman Formula 3

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    #16 246tasman, Oct 5, 2009
    This is definitely going to be the easy cheap sensible way forward.

    If you dont mind the work you could put a 456/550/575 6 speed transaxle in. I know it fits as I put one in my 575GTO special, see thread below.
     
  17. Godspeed!

    Godspeed! Karting

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    #17 Godspeed!, Oct 7, 2009
    Hmmm 456 set up is very nice in your car, but in the confines of the stock body chassis, I don't believe the set up will fit. There is a lot aftward of the half shafts on the 456, is there enough room?

    I would jump on it, what are people getting for the set up?

    Godspeed!
    Dave
     
  18. Godspeed!

    Godspeed! Karting

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    #18 Godspeed!, Oct 7, 2009
    Last edited: Oct 7, 2009
    Have contacted Tremec to provide dimensional drawings of a few trannies. They do have a model which has an optional tail section to which a transfer case is mounted. This means that a torque tube flange could also be modified to attach. But on that model, torque rating may be a factor.

    A total gear box new is around $2k, many different ratios available

    Meeting with a guy tomorrow on bellhousings, going about this as a true engineering project.

    Pedal and box is straight forward design work.

    So we'll see.

    Godspeed!
    Dave
     
  19. Godspeed!

    Godspeed! Karting

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    #19 Godspeed!, Oct 20, 2009
    Last edited by a moderator: Sep 7, 2017
  20. Ashman

    Ashman Three Time F1 World Champ
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    #20 Ashman, Oct 20, 2009
    Do you know the serial number of the donor car for that tranny?

    Good luck with your project!
     
  21. Godspeed!

    Godspeed! Karting

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    #21 Godspeed!, Oct 28, 2009
    Ashman,

    Serial number is 20665.

    Asking price for all shown parts was $7500.00! Add in shipping, synchros and bearings and well..............so for now I passed on the deal.

    On the positive side, working drawings for the conversion kit which uses a WC T5 are developing well. Very "doable" but will take some time to finalize.

    Godspeed!
    Dave
     
  22. 246tasman

    246tasman Formula 3

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    #22 246tasman, Oct 29, 2009
    Dave

    Would you mind sharing where you found the gearbox? It looks form the photo like he might have a lot of other interesting parts.

    Thanks
    Will
     

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