Incline parking and converter drainage

Transmission and Drivetrain Tech

  1. Righty Tighty

    Righty Tighty FABO Gold Member FABO Gold Member

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    Am I overthinking this? My driveway has an incline, and the way I see it, if I park with the front of the car facing uphill, the converter will drain more than if I were to back in, with the engine facing downhill.

    Does it even matter? The converter will refill once the car is started, but is it better to prevent the ATF from draining in the first place?
     
  2. RustyRatRod

    RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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    The converter picks up fluid so quick it'll never know the difference.
     
  3. Righty Tighty

    Righty Tighty FABO Gold Member FABO Gold Member

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    Cool, thanks Rusty. The stupidest things rattle around in my head when I’m trying to go sleep.
     
  4. 67Dart273

    67Dart273 FABO Gold Member FABO Gold Member

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    Converters refill much better in NEUTRAL, and yes, that is different than "park."
     
  5. Righty Tighty

    Righty Tighty FABO Gold Member FABO Gold Member

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    I’ve heard of folks starting their cars in neutral. Is this best practice?
     
  6. Krooser

    Krooser Building Chinese Free Engines since 1959...

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    Start in park then pull into neutral for a second or two
     
  7. RustyRatRod

    RustyRatRod I was born on a Monday. Not last Monday. FABO Gold Member

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    It's just a non issue. Park, neutral, drive, whatever. How many cars would have burned up converters if it was an issue?
     
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    • CudaFactHackJob

      CudaFactHackJob Well-Known Member

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      The TransGo shift kit is good for their new manual valve that allows the converter to charge in PARK. It's not perfect; the fluid level might still be a little bit higher in PARK than NEUTRAL; like half an inch.
       
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      • Duane

        Duane Well-Known Member

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        When I rebuilt the 47re in my diesel I put in the two aftermarket
        Valves from Sonnax. These charge the converter full time in park.
         
      • pishta

        pishta I know I'm right....

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        Trans GO "No Yo-Yo" kit includes the spool valve that prevents convertor drainback.
        "..A727/A904 NoYoYo W/ Manual Valve Shift Kit 1960-Up TF6, TF8, 904 and 727 3 Speed RWD 60-up Aluminum Case Transmission Includes New Manual valve, Mumbly Peg for easy rooster comb assembly and items for unit calibration. Addresses Converter slip-shudder. Leaks out vent or lever. Front bushing and seal burnup. Drainback Complaint .."
         
      • Duane

        Duane Well-Known Member

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        Yes it does and I won't say that valve does not work, but it is inferior
        To the Sonnax design which uses a built in check valve that block flow completely in one direction and opens to flow as soon as the engine starts.
         
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