Moparts Tech Archive

Convertors

Factory Stall

Author Topic: factory stall converter, real stall speeds??
Mudologist
New Member
Posts: 73
From: Hazleton
Registered: Mar 2002
posted 08-24-2002 02:53 AM

the factory made three types of converters. a low stall, standard stall and high stall.
what range is a low, standard, or high stall? I have a high and standard factory stall converter but have no clue what rpm range the factory considered high and standard?????????????????????
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Killer B
Moparts Member
Posts: 213
From: Lawrenceville Ga 30044
Registered: Apr 2002
posted 08-24-2002 05:10 AM

is this true? i know they stall like 800.
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Mudologist
New Member
Posts: 73
From: Hazleton
Registered: Mar 2002
posted 08-24-2002 06:07 AM

I read this article here: http://www.moparts.com/ub/ubb/Forum14/HTML/000006.html and it tell's you how to reconize a factory high stall converter. I have a factory high stall converter and a standard factory converter, but what rpm stall do they consider a high stall if it is behind my 440. What rpm do they consider standard stall behind my 440?
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BluCuda
New Member
Posts: 39
From: Pataskala Ohio
Registered: May 2002
posted 08-24-2002 10:43 AM

In the Mopar Performance News August 1999 Larry Shepard states in an article:
[ The typical 360 will have the stock converter. The true high performance packages would have the high stall production converter which is a 145k unit like P4876870. The stock 440-4 bbl converter was the large 120k converter. We have always told the HP 440s to use the Street Hemi converter or the 383 Road Runner converter or converter, P4876870. In any case thats the 145k converter.]
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BluCuda
New Member
Posts: 39
From: Pataskala Ohio
Registered: May 2002
posted 08-24-2002 10:52 AM

120k= 1500-1700 stall
145k= 1900-2100 stall
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69DartGT
Moparts Member
Posts: 730
From: San Diego, Ca.
Registered: Dec 2001
posted 08-24-2002 11:14 AM

BluCuda, what about the 165K and the 175K factory converters? I have the 175K I'm going to use it behind a warm 360 and a 904 trans.
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BluCuda
New Member
Posts: 39
From: Pataskala Ohio
Registered: May 2002
posted 08-24-2002 12:29 PM

69DartGt- I have no experince with either the 165k or 175k factory converters so i can not give advice. The MP catalog rates them as
165k= 2250-2350 stall
175k= 2400-2500 stall
Follow the MP catalog suggestions for your application or get recommendations for your application from moparts members that have used these converters. In the article by L. Shepard he also recommends a trans cooler with the 175k converter.
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71ChargerSE440CI
Moparts Member
Posts: 2826
From: Rancho Cucamonga, So. California, USA
Registered: May 2001
posted 08-24-2002 01:46 PM

Not to mention, that the SAME converter will exhibit different stall characteristics depending on which engine/how much HP-Torque you have in front of it.
The SAME converter used behind a stock slant-six will stall at a lower RPM than the same converter mounted behind a built Hemi.

The converters behind Hemis and in Road Runner/Super-Bee optioned cars were the high-stall type. The MP Chassis Manual (page 72/73) has a transmission section that describes the various factory converters.

The A-731 converter was used behind the 440, 350 and 375 HP versions, Six-Pack and 383/400 4bbl.

The A-905 and A-862 were used in high performance applications (Street Hemi, 383 Road Runner/Super Bee and 340/360-4bbl.)

For factory Race Hemi's, three converters were used: a 10-inch (P4286533) and two 9-inch (P4349494 and P4349495.)

There is also the "J" converter or 069J (P5249115) engineered for use in Super-Stock behind 440 and Hemi equipped engines.

The Street Hemi converter is rated at 1,830 stall.

If you plan on heavy street/strip activity, it is best to sell your factory performance converter to a resto-oriented car hobbiest. Then, call a converter manufacturer with your cars specs/intended use and ask for recommendations. They can offer you the best converter for your application.

Performance improvements of over 1/2 second are common when switching to the appropriate converter as comparred to your-best-guess aftermarket converter.

It really can make a HUGE difference, the right converter versus the wrong one, yet most people just guess at what they think they need and/or buy what a friend has, advertising, etc.

Also, the RIGHT aftermarket converter will better survive the pounding than the BEST factory converter.
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John Kunkel
Moparts Member
Posts: 2403
From: Rio Linda, CA, USA
Registered: Nov 1999
posted 08-24-2002 02:07 PM

the factory made three types of converters. a low stall, standard stall and high stall.
There were only two types, the standard was low stall and the second type was high stall.
The difference in the high stall is the stator.
The factory stall speed spec for a small converter behind a 340 is 2450, the same converter behind a 383-4 is 2650.
The stall spec for a large converter behind a 318 is 1850, behind a 383-2 is 2100, for the same converter behind a 440-4 2300.
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