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Old 03-24-2005, 10:14 PM
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Stall ratings

am I correct to understand that if a stall is rated at 3000 that anything under 3000 will act pretty much like a slipping clutch? so around town driving with a 3k stall would be horrible. I would constantly have my foot in the carb? any info appreciated thanks
Shane

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Old 03-24-2005, 10:52 PM
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stall

The higher the stall the more it slips to get the motor rpm up to where the cam works best quicker.

If you were to chain the wheels to the ground so they couldn't turn. The stall rating is the point where the tranny locks up and the motor can't rev any higher.
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Old 03-24-2005, 11:03 PM
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ok so with a 3000 stall, and driving in town. would it act as if the tranny was slipping real bad or would i be able to take off pretty decent without having to hammer it all the time? and also would it be like dumping the clutch at 3000 and at every take off it would break em loose? once locked up is the power transfer noticeabley better than stock 1970 converter would be? lotsa questions I know but I appreciate every response.
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Old 03-25-2005, 12:35 AM
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3000 stall

First of all the stall of a convertor is matched to the cam. Where did you come up with 3000?

A torque convertor is basically a liquid clutch. In stock motor the slippage is noticeable. Its like riding the clutch all the time. The more power the less noticeable.

No, you do not have to get up to 3000 rpm to move the car. It will move right from idle. It will just rev high for the mph until it grabs fully.

Yes if you walk it down it will break the tires loose. Its like dumping the clutch in a standard.

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Old 03-25-2005, 08:31 AM
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I came up with 3k from my dyno charts a few years back. the cam is a summit hydraulic cam with 262/272 - .484/.510 @.050. its not a huge cam but my car definitley lags from start and I figured around 2400-2500 would probably be a good stall. I was just using 3 as a reference. I have also read how if you buy a stall, the listed stall may not be what you get. does the stall drop or raise the with more power you have?
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Old 03-25-2005, 08:39 AM
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cam

That cam would be fine with 2500 to 2800 stall. The more torque, the more stall. A bb with the same HP will stall higher than a sb.
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Old 03-25-2005, 12:08 PM
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in english can it be explained why more toruae would be higher stall? my engine dyno'd with 350 hp/400 tq.
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Old 03-26-2005, 07:01 PM
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High Stall

In English I,ll explain it backward. A 1991 Z24 Cavalier 3.1 V6 180 lbs./ft torque .has a factory stall of 2,600 RPM. You buy that torque converter and install it in your 2.2 4cyl. 120 lbs/ft stock base Cavalier. The stall RPM with this combination is only 2,400 RPM because this engine does not have enough torque to bring the RPM up to the same as the Z24 .
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