stall converter

Discussion in 'Technical' started by bowstick, Aug 18, 2007.

  1. bowstick

    bowstick Member

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    well i was talking to a guy with a 78 camero and it was awsome but he said that it had an automatic transmission but it performed kinda like a manual becasue he has a stall converter. He briefly explained it to me but im still confused ........ help?
     
  2. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    High stall converters tend to slip below their intended stall RPM which kinda sorta feels like a loose clutch at normal takeoffs from a stop.When you stomp on it though the converter flashes up to its intended lock up point(stall speed) at which point its like dropping the clutch at 4 grand and getting pinned in the seat.Hope that helps you.
     
  3. bowstick

    bowstick Member

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    ok thats what i thought but is it part of the transmission or what?
     
  4. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    yes it connects the crank to the transmission.Kinda like the clutch would.
     
  5. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    I would add that it is mainly used in drag racing. Not really practical in a daily driver car.
     
  6. j miller

    j miller Montana MCCI state rep

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    not practical but ALOT of fun! mine has a 3000 stall converter in it and when i rev to appx 2800 and drop the brake it launches hard. even with a factory rear end. can't wait to get my 355 posi unit in.
     
  7. PAINTANK

    PAINTANK Cometosis Obsessivus

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    3K is a good one for fun on the roads.
     
  8. valleyracer

    valleyracer Member

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    I have a TCI 2400 in my truck and it is great when you hit it!

    Richard
     
  9. Maverick73

    Maverick73 Senior Member

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    Hey Craig, I assume you have the factory stall in your Grabber, which is around 1600 factory?
     
  10. Fish OutOfWater

    Fish OutOfWater Brian

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    I believe the factory was 1400 on the V-8. Keep in mind that the stall converter has to compliment the power range of the engine. A race engine needs to rev higher to get into its power range. If a built engine makes power from 4000 to 8000 rpm, it would be very flat with a stock converter. Likewise if you put a 4500rpm stall on a stock engine, It'ld probably launch good and immediately redline, you would be out of engine very quick. On a stock engine a "saturday night special" 1800-2200 would wake up the performance, and its cheap, but doesnt act too much like a 4-speed. Do you want better performance or to act like a 4 speed?
     
  11. Craig Selvey

    Craig Selvey Indiana State Rep - MCCI

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    Yes...I put in a factory stall. Never going to race it....so I didn't really need it.

    But then again ......I don't drive it everyday....so I could have put a stall in. :D
     
  12. TheMaverickBoy

    TheMaverickBoy Member

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    is a stall converter the same thing as a torque converter?? It sounds like it is.... and if so I wish I had known that before I bolted my factory one to the back of my 250.....
     
  13. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    They are both the same thing.Preformance converters "stall" at a higher RPM than stock.There are other differences as well between stock and performance but basically yeah,same thing.
     
  14. obmav

    obmav Greg Garrison

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    also helps with "cluck " when putting in gear if you have little sbove stock engine
     
  15. CaptainComet

    CaptainComet Large Member

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    higher-stall torque converter

    Another variable in the rpm rating on a converter is the vehicle weight. A heavier car will make the same converter slip up to a higher rpm than a lighter car.

    I have a B&M Holeshot in mine that is rated at 2400 rpm, but realistically it is likely that it only flashes up to 2000/2100 in a car as light as ours.

    I like it for street driving. Much more would probably start to be annoying, and it really needs to be matched to the motor, as was pointed out above.

    Keep in mind that these put more heat into the tranny, especially at cruising speed where the rpms are still down around the stall speed. There is a bit more slipping happening. A good transmission cooler is a must.
     

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