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6R80 swap

Discussion in 'Driveline' started by stangfreak, Feb 26, 2017.

  1. paulstang347

    paulstang347 Member Established Member

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    Very nice. That is good info to have. We are pioneers in the 6r80 platform swap so lets get as much info out there we can on it. Thanks for letting us know.
     
  2. ShootyMCstabby

    ShootyMCstabby Brownie Hound. Established Member

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    So Paul and Micheal, it looks like both you guys switched out the rear flange on the M-4602-MGTM. 1 put a stock flange on and 1 went with a strange flange. both are 8.8 sra.

    do either of you know if the M-4602 drive shaft fit on out the box without switching rear flanges.? on your guy's 8.8 sra.

    And to holiks03cobra, I'm sorry you took me making a joke that was meant just for miscommunication/telephone game, as Douchey. If you go back and read, it was a very uncertain comment made by Rambo.

    I am glad for the info,(and on the headers I have the same) as I said I did place a order on that particular drive shaft. So I hope I can get some replys on the info I asked above.
     
  3. Michael Plackis

    Michael Plackis Active Member Established Member

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    Mine did not fit with the flange that came on it. I had to change it
     
  4. ShootyMCstabby

    ShootyMCstabby Brownie Hound. Established Member

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    just swapping it out with the factory piece? I hope my rear flange fits off my shaft now as it's not the factory drive shaft. It does have 1350 u-joints though.
    I wonder why Holiks03cobra's didn't fit. looks about a 1/2" or so off.

    Edit: I do have a MM k-member with 1/2" drop spacers. Maybe that will make up the difference.
     
    Last edited: Sep 3, 2018
  5. holiks03cobra

    holiks03cobra Active Member Established Member

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    Well my trans didn't last very long. On the first wot pull I lost 4th gear. I even had it rebuilt with exedy clutch packs.
     
  6. Michael Plackis

    Michael Plackis Active Member Established Member

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    Make sure the converter is the right distance from the flexplate. Idk what that really means tbh but I read that on an S197 forum when I was researching the swap
     
  7. scottydsntknow

    scottydsntknow Active Member Established Member

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    G dang it I just read through this thread and really good info. Gonna have to get creative to figure out how I'd get one of these over to Spain (active military) when my t45 finally lets go but that is the plan. Military post weight limit is 75 lbs so... yeah...
     
  8. Michael Plackis

    Michael Plackis Active Member Established Member

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    If you need help shipping it a different way feel free to message me and I’ll help with the shipping if you send me the money
     
  9. scottydsntknow

    scottydsntknow Active Member Established Member

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    Oh I can get it brought in with a shipping crate that a local business gets in every few months but its not super cheap and then I have to pay VAT on anything that comes in unless its MilAir or I get someone from my old unit to fly it in on a grey tail but that would be asking a LOT for a heavy ass transmission.
     
  10. Soap

    Soap Well-Known Member Established Member

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    The guys having driveshaft issues are the ones with IRS. The pinion on the IRS is about 1/2" further forward than a SRA car. That is why when you swap to a SRA you should get a new driveshaft because you loose 1/2" of spline engagement on the transmission output shaft.

    --Joe
     
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  11. scottydsntknow

    scottydsntknow Active Member Established Member

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    Or just get a spacer.
     
  12. Bandit5.4

    Bandit5.4 Slow driver Established Member

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    So for those with IRS, what is the solution to the Ford Racing 1 piece not fitting? Are the only options getting it shortened or getting a custom shaft made?
     
  13. Dusten

    Dusten Well-Known Member Established Member

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    Any decent driveline shop can build one.... rather than spend the money ford wanted for an oem lightning ds I had a reputable local shop build one
     
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  14. Dusten

    Dusten Well-Known Member Established Member

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    . 2a9f415dcc73c16f000506e5988c980b.jpg
     
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  15. tt335ci03cobra

    tt335ci03cobra Well-Known Member Established Member

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    Any updates?
     
  16. scottydsntknow

    scottydsntknow Active Member Established Member

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    Driveshaft length is a non-issue when any competent shop could build you one for the same price or less.
     
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  17. mysteed

    mysteed Well-Known Member Established Member

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    Great thread chocked full of info - loving it. Possibly may put in the 6r80 over the 4r70 in my 98 BAB.
     
  18. Soap

    Soap Well-Known Member Established Member

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    That is a requirement for all automatic transmissions on all cars. Once the trans is bolted in place you need to measure the freeplay distance between the flexplate and pads on the converter. Typical spacing is 1/8" to 3/16" but you should confirm with your trans/converter builder what sort of clearance they like to see. Either way, if you are out of the recommended range you will have serious issues.

    --Joe
     
  19. holiks03cobra

    holiks03cobra Active Member Established Member

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    Sorry I don't get on here that much anymore. It snapped the intermediate shaft. Replaced that now I have a leak coming from the housing where the converter is. Have to pull the trans back out.
     
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  20. ShootyMCstabby

    ShootyMCstabby Brownie Hound. Established Member

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    That sucks. When you replaced the intermediate shaft did you replace the 13 bolts that attach the front pump to trans case?. Part # 6L2Z-7N134-BA.

    6R80 service manual says to replaces those 13 bolts(6L2Z-7N134-BA) every time you open it up.

    Or it could be a front pump seal. 6L2Z-7A248-AA.
     

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