Torque Converter

Discussion in 'Transmission & Driveline Topics' started by Kskevin, Feb 12, 2019.

  1. Kskevin

    Kskevin Member

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    Price is not an issue I want a good stall converter. I think I'll need 2500 stall for my th350. My engine rebuild...357
    10:1 compression
    Cam: lunati hyd roller 270/278
    190cc aluminum heads CNC machined
    1.6 ratio stainless rockers
    High rise dual plane intake
    750 Holley carb
    All input appreciated...Thanks
     
  2. xten

    xten Veteran Member

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    There are a lot of good companies out there. Don't go with one off the shelf. Have one built. I have had good luck with Coan and PTC.
     
  3. Kskevin

    Kskevin Member

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    Do you think 2500 stall is a good number.
     
  4. camaro71/holland

    camaro71/holland Veteran Member

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    Not very specific on the cam. This is what I could find, is this your cam?:

    Retro-Fit Hydraulic Roller. Great mid range torque and HP. Likes 2000 RPM stall converter and works great in towing applications with lower gearing. Largest for inboard/outboard performance marine use.
    Advertised Duration (Int/Exh): 270/278
    Duration @ .050 (Int/Exh): 219/227
    Gross Valve Lift (Int/Exh): .515/.530
    LSA/ICL: 112/106
    Valve Lash (Int/Exh): Hyd/Hyd
    RPM Range: 1800-5800

    If that's correct, then there's your answer 2000-2200 will do the job.
    Doesn't sound like a high performance unit, so any of the respectable brands will do the job. By going custom, they can finetune the unit to deliver the stall speed with your power level, but I think it's a bit of overkill with your combo.
     
  5. Kskevin

    Kskevin Member

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    Yeah that's the cam
     
  6. Kskevin

    Kskevin Member

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    • Advertised Duration (Int/Exh): 282/290
    • Duration @ .050 (Int/Exh): 231/239
    • Gross Valve Lift (Int/Exh): .535/.550
    • LSA/ICL: 110/106
    • Valve Lash (Int/Exh): Hyd/Hyd
    • RPM Range: 2400-6200
    • I figured this would be to big am I wrong?
     
  7. camaro71/holland

    camaro71/holland Veteran Member

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    This one has different duration, so which one is it?
     
  8. Kskevin

    Kskevin Member

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    The specs you posted are to the cam I'm looking at. The specs I posted were for another cam but I thought the duration for the larger cam would be to much and mess with vacuum for my brakes...so I was told anyways.
     
  9. xten

    xten Veteran Member

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    I would call one of the reputable companies and talk to them, or go on line and see if they have a work sheet you can fill out. A good converter company will want a ton of info on your combination to build you a converter. Everything has to do with what you plan on doing with the car.
     
  10. 77 cruiser

    77 cruiser Veteran Member

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    If I used a 231/239 cam in a 350 I'd use a 3500, no less.
     
    Kskevin likes this.

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