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Thread: Stock a413 boost level

  1. #1
    Hybrid booster
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    Stock a413 boost level

    Who has run what boost for how long on a stock a413 auto cars? And what time you ran, if taken to the track.

    Mine is stock for now, shift nice and crisp, and no slippage. The only previous auto I had, I modified, extra clutches/steels, full manual valve body line pressure upped ect, before I put it in service.

    Any knowledge appreciated.

    Thanks, Greg

  2. #2
    Buy my stuff!!!!!!!!!!! :O) Turbo Mopar Vendor turbovanman²'s Avatar
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    Re: Stock a413 boost level

    I would keep it around stockish, the converters are crap, clutch clearance is too loose, etc, etc.

    I would up the line pressure a bit, do the valve body mods and adjust the bands, put some good fluid in with a litre of 5/10w30 synthetic oil and run a nice large oil cooler.
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  3. #3
    Hybrid booster
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    Re: Stock a413 boost level

    What year too. My 85 trans was toast after I cranked up the boost to ~12psi. I think it was the converter though because the older converter were trash from what I understand. Cliff rebuilt me an 89 a413 form a mini and it is just fine so far. Only like 10k miles though if that.

  4. #4
    boostaholic bfarroo's Avatar
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    Re: Stock a413 boost level

    Been running my Spirit 2.5 at 12PSI intercooled for the last 60,000 miles, Pulls a half ton trailer and my Shadow on a tow dolly. about 200,000 on the car now. No major slipping, flares into 3rd with certain throttle positions. The valve body is sticky and the car doesn't always want to upshift/downshift at some times.

  5. #5
    Hybrid booster
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    Re: Stock a413 boost level

    Thanks for the in put.

    Greg

  6. #6
    Supporting Member Turbo Mopar Contributor Blue Iroc R/T's Avatar
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    Re: Stock a413 boost level

    Greg; My son was running 18psi but each A413 would only last a Summer on the streets. The tranny seemed to hold up, but the torque Converter wouldn't hold up. He never did get to the track much. In March of 07 we took it up to Jacksons and swapped to a A568 Small Spline. http://www.pbase.com/rmscott/tranny_swap He says that he is going to have it done and bring it to SDAC. We will see.
    Ralph Scott

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  7. #7
    Hybrid booster
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    Re: Stock a413 boost level

    Ralf, only one summer is scaring me. I think I'll give a try first, then replace/rebuild if needed.

    Going to run a large cooler, and a temp gauge. The one in the Typhoon has done me well, as I really watch the tranny temps on it.


    Greg

  8. #8
    boostaholic
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    Re: Stock a413 boost level

    Greg,

    My GLH cal is set to 18 psi now but I have the basic valve body mods.
    It probably weighs just over #2000 which helps alot.

  9. #9
    boostaholic
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    Re: Stock a413 boost level

    my a413 in my 87 lebaron w/11x,xxx miles lasted 5 months w/ log @12-14psi and 3months coverted to blow through style/intercooled @15psi. It was just starting to slip and not wanting to change into 2nd, then the motor developed a rod knock
    -Jim Too many cars, not enough time..

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