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High Stall Converter=firmer shifts?

This is a discussion on High Stall Converter=firmer shifts? within the Drivetrain forums, part of the LSx Technical Help Section category; I just got a new transmission (well new to me) off a guy on craigslist and it has a high ...

  1. #1
    Member Dave-TransAm's Avatar
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    1997 Firebird M5

    High Stall Converter=firmer shifts?

    I just got a new transmission (well new to me) off a guy on craigslist and it has a high stall torque converter (3500 stall I believe) and when the car shifts, it shifts a lot firmer and quite a bit quicker than with a stock TC. Thats normal right? I'm just not used to it and haven't driven the car in 2 months because its been getting a bunch of new parts.

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    Veteran 0rion's Avatar
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    98 Formula
    06 duramax

    did he say if it had a shift kit in it? Traditionally a stall will soften shifts unless you add a shift kit.

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    Member Dave-TransAm's Avatar
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    im not entirely sure haha but it feels like it

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    🤔 11s. blackbirdbrain89's Avatar
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    black trans am
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    no the bigger the stall the crapper the shifts get... now over the stall rpm it might feel the same but under they will feel like crap...... shift kit is probly whats going on...

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    Member Dave-TransAm's Avatar
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    Quote Originally Posted by blackbirdbrain89 View Post
    no the bigger the stall the crapper the shifts get... now over the stall rpm it might feel the same but under they will feel like crap...... shift kit is probly whats going on...
    Got it. Thanks for the help guys!

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    Veteran 0rion's Avatar
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    do you have a tune for the car? Line pressures and shift times can also be increased in the tune.....that's how I did mine.

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    Member Dave-TransAm's Avatar
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    Quote Originally Posted by 0rion View Post
    do you have a tune for the car? Line pressures and shift times can also be increased in the tune.....that's how I did mine.
    nope no tune

  8. #8
    Old Member, New Username BrownsMillsAntz's Avatar
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    1995 Z28 w/ LS1 Swap

    Got tuned after my 3600 install...car shifts nice but I also have a built tranny

    Heads/Cam/Intake/Stall.
    404 Rwhp uncorrected @ 6400

  9. #9
    dbl clutch'n like i shld WICKEDLS1's Avatar
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    put the 3400 in my stock trans and it made the shifts softer then stock and im tuned

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