New converter, now trans is weird

Discussion in 'The "Juice Box"' started by Yardley, Apr 3, 2008.

  1. 69GS400s

    69GS400s ...my own amusement ride!

    I will also add that the impression I got while speaking with their rep was that "If its not doing what you wanted, then lets get it fixed so it does" which is a positive ray of sunshine although tainted the color of tranny fluid

    The 2% overdriven thing still rubs me the wrong way though - maybe I'm ignorant but I believe in the law of conservation of energy
     
  2. Yardley

    Yardley Club Jackass

    He swears the driveshaft will turn 2% slower than the crank with their converter. We'll see. I just want the damn thing to not rev to the sky to get my sled rollin'.
     
  3. 71GSX455-4SPD

    71GSX455-4SPD Nick Serwo Magic Car

    Sled? That's more like a brick.
     
  4. CJay

    CJay Supercar owner Staff Member

    I hear it handles like a piece of american cheese on a tile floor.:pp
     
  5. 6D9

    6D9 Well-Known Member

    Also take a look at Continental Converters. They have a 10" 3200 stall Jim Hand model. Its for high torque big block Pontiacs and Buicks. It is said to feel like stock but will flash 3200 when flashed hard. I just picked one up to run behind my 408 sbc. My 408 was build for TQ and also run a GV overdrive so I needed a really efficent converter at part throttle. It should flash about 3000 behind my motor. I picked my up from Cliff Ruggles(Q jet god). Give him a call he is very knowledgable.
     
  6. DaWildcat

    DaWildcat Platinum Level Contributor


    Don't you mean 2% faster, the odd "overdrive" comment?

    Driveshaft 2% slower than engine simply means some slippage in the converter due to the fact that it's a fluid coupling.

    Maybe you misunderstood their statement?

    Devon
     
  7. Yardley

    Yardley Club Jackass

    You are correct, Devon. 2% faster.

    Basically, he told us it would overdrive by 2%...
     
  8. 70sLark

    70sLark Well-Known Member

    As funny as that is, I know his pain.
    But with a Buick under the hood its real easy to forget the 10ft of car still behind ya.
    Till you turn ;)
     
  9. CJay

    CJay Supercar owner Staff Member

    Im still licking my wounds from this past winter. We've all been there.

    As Doug says- Its only money, I can make more


    Plus, I have to break his b***s a little. Its a NE chapter tradition. :laugh:
     
  10. Yardley

    Yardley Club Jackass

    I have a Franklin that says my Riv will outhandle any stock A-body.
     
  11. sailbrd

    sailbrd Well-Known Member

    Define stock. :Brow:
     
  12. TORQUED455

    TORQUED455 Well-Known Member

    Both myself and Gusszgs (Jim N) use a Coan 10" Max Performance converter in similar builds, around 4k stall. I worked through AM&P, so Mike P was able to check my build and provide a dyno sheet to Coan from a similar build to get a converter made for my needs.

    I don't know if Jim N worked through AM&P or not, but it seems like it may be crucial to have a Buick guy (like Mike P or JW) talk to a converter shop on your behalf.

    Both Jim N and I have had similar results -- you'd never know you have a 4k converter until you mash the throttle. Mine was part # 20320-B from AM&P for $665 delivered. I couldn't be happier.

    $915 for a converter for a street/strip car seems like a little overkill.
     
  13. D-Con

    D-Con Kills Rats and Mice

    Wow, that sucks on the face of it. Hopefully they will take care of you. It does sure seem amatuerish to throw out all the details you were offering to armchair-application something like a converter.....We've proven that doesn't work starting with the GSCA coverters 20-years ago.
     
  14. 69GS400s

    69GS400s ...my own amusement ride!

    He didn't necessarily arm-chair the build ... he referenced another Buick Riv making more power and running 11's (a board member) thats also a street car and said Yard's build is similar with his lower HP taken into consideration :Do No:

    ... then again the unit did ship only several hours after the order was placed :confused: which hints toward an off the shelf piece

    We are trying to contact this board member to follow up with them about their setup and how it behaves but they haven't been active on the board since 11/07 ... we'll see if they answer PMs or Emails
     
  15. Yardley

    Yardley Club Jackass

    I agree. But I deferred to their expertise, as I'm not a converter expert and they are. I put all my faith in their knowledge and just let them call the shots. I wanted a real expert to tell me what to do.

    $915 for a part that could do what I need for $650 is over the top, but I'm not saying anything against Coan here. If the converter they get me finally ends up doing exactly what they say and perform like it should, then I'm 100% OK with the price.

    My other 10" converter is a real POS and doesn't flash worth a darn. This Coan flashed great, but cruising was abominable.
     
  16. Geoemojr

    Geoemojr Guest

    You must make a lot of cash to blow close to 1 grand on a converter.:Brow:
     
  17. 71GSX455-4SPD

    71GSX455-4SPD Nick Serwo Magic Car

    :puzzled: Shhhh! Keep it down. The marital unit may have spies on this site! :)
     
  18. Yardley

    Yardley Club Jackass

    It's not what you earn, it's what you keep. A little life lesson for y'all there.
     
  19. kick71

    kick71 Mike

    Well said Yardly!
     
  20. Yardley

    Yardley Club Jackass

    **UPDATE**

    I shipped the converter back to Coan on Monday. They will see what is up with it and lower the stall to 3200.

    More when I know it...
     

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