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Flexplate bolt pattern

Transmission and Drivetrain

  1. bullet18

    bullet18 Well-Known Member

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    I just got the 512 in with the new wholeshot torque converter and the bolts dont kine up at all. The pictures not very good but the t/c bolts are further up than the flexplate holes. Is there a different flexplate i need? It fit perfectly into the transmission. Im really pissed now cause i have to completely remove the engine again.

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  2. fasjac

    fasjac Well-Known Member

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    Are you sure the converter is seated all the way in? I’m a manual trans guy but, I’ve been through this before. In the pic it looks to me that the converter is not quite in all the way.
    Is the drive plate OE? Did the whole shot converter have any markings, v or arrow like the factory?
    If so, the driveplate should have a1/8 hole close to the inner circle. That hole and the “v” indicate the offset hole.
    That’s by memory but, I have a shop manual if you need anything looked up.
    Good luck
     
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  3. 704406

    704406 Well-Known Member

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    There are 2 different flex plates with different bolt patterns. I can send pictures and measurements later today or tomorrow. Looks like the new converter is the small bolt pattern and the old one was the larger one. Also check that the converter is all the way into the trans pump area, it does look like its not all the way back as fasjac says, or did you pull it forward to try to bolt it up to the flex plate?
     
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  4. bullet18

    bullet18 Well-Known Member

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    I got it in all the way the pictures just at a weird angle. It clicked 3 times. I guess i need a small bolt pattern flex plate.
     
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  5. fasjac

    fasjac Well-Known Member

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    If that’s a B&M converter ( I think it is) I would see what they have for it. If the motor is internally balanced, all good with OE plate. If not you may check with B&M on their options for external balanced plates. Just my 2cents,
    keep us posted and hang in there.
     
  6. fasjac

    fasjac Well-Known Member

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    Hey Bullet, I know you have you hands full. If you get a moment later, will you share the part # converter you are installing and the rear gear ratio? As, I may put together a set up for the track later.
    Thanks man,
    fasjac
     
  7. bullet18

    bullet18 Well-Known Member

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    I just bought a flexplate with all the bolt patterns and it'll be here by next weekend.
     
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  8. moparlee

    moparlee Well-Known Member

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    Are you sure that you have the flex plate rotated properly. Just like the crank shaft flange which has one hole off set, so does the converter and the flex plate. This is done so all the parts get bolted up the same after removal to maintain the proper balance of everything.
     
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  9. bullet18

    bullet18 Well-Known Member

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    Yeah i rotated it all tge way around and none of them lined up.
     
  10. fasjac

    fasjac Well-Known Member

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    That bites! Hate to hear that bullet18. Which plate do you have coming? If I may ask.
     
  11. Chryco Psycho

    Chryco Psycho Well-Known Member

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    Sucks but you will only make that mistake once !!
     
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  12. bullet18

    bullet18 Well-Known Member

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    Double post
     
  13. bullet18

    bullet18 Well-Known Member

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    Double post

    Screenshot_20200112-221301_Chrome.jpg
     
  14. bullet18

    bullet18 Well-Known Member

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    Keep in mind im a college sophomore and broke as hell. It is sfi approved. 440 source has been hit and miss as far as quality goes. The stroker kit seems great so far but the transmission mount they sent me required heavy modifications.
    Screenshot_20200112-221301_Chrome.jpg
     
    Last edited: Jan 12, 2020
  15. fasjac

    fasjac Well-Known Member

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    I completely understand! I’m running if their roller rockers on mine right now. Along with their serpitie
     
  16. fasjac

    fasjac Well-Known Member

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    Serpentine pulleys and valve covers. It’s all good so far.
    Sorry, I hit post reply accidentally on the previous post. 440 source has some good parts and like you, I’ve read some negative stuff. I’ve never used any tranny parts but, I’m betting you’ll be fine. When frustration sets in, just step away for a few minutes. We’ve all been there. Thanks for the info and keep us posted.
     
  17. bullet18

    bullet18 Well-Known Member

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    The flexplate got here so ill be pulling the engine when i get home this weekend. Hopefully it goes well and i can get the oil system dealt with
     
  18. fasjac

    fasjac Well-Known Member

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    Nice. I bet it will. Keep us posted bullet!