What is the stall of a factory conveter?

[Daytona Guy]

What is the stall of a factory conveter for a 727 440 ap. ? I am getting a Comp Cam XE274H - Comp says this cam needs a 2200 stall. I thought the 727 440 application comes with a converter that has a 2200 stall. Is this true or will I need to get a differant converter.

[Nacho-RT74]

Is this one ?
http://www.compcams.com/Technical/Search/CamDetails.asp?PartNumber=21-224-4

here is some torque converter tech archives at Moparts
http://www.moparts.com/Tech/Archive/conv/4.html


P.S.: Good, if they recomend a 2200 Stall I did choose a "similar"  cam ( but Mopar Performance ) and I got Mopar performance 2250-2350 converter, and I'm not that bad!!!!

[RD]

What is the stall of a factory conveter for a 727 440 ap. ? I am getting a Comp Cam XE274H - Comp says this cam needs a 2200 stall. I thought the 727 440 application comes with a converter that has a 2200 stall. Is this true or will I need to get a differant converter.

it matters on the type of 440, the year, and the vehicle it was put in to be honest.

[69CoronetRT]

What is the stall of a factory conveter for a 727 440 ap. ?

[John_Kunkel]

Keep in mind that all 440's prior to '78 used the 11 3/4" converter, when that converter was discontinued in '78 look at the difference in stall speeds with the smaller 10 3/4" converter; even with the low-compression smogged down 440HP:

[Nacho-RT74]

so probably I got same torque converter I already had ?

SORRY I dont want to highjack the thread, but I asked couple of times this and nobody told me a CERTAIN answer... did look consensus was around 1500-1800

[Daytona Guy]

It appears that all 440 stock converters stalls can be used with the Comp Cam XE274H (recommended 2200) - or am I off base??? I have the 11 3/4 converter but it is a 69 that came out of an Imperial if it is the original. I really do not want to have to buy a new converter if I do not have too. OR, do high stall converters just run better? Last thing I want to happen is to have my motor die when I come to a stop or lug off the start.

[Nacho-RT74]

I'm still wondering if a "high stall" converter moves the car at iddle. I will hate that I probably got same or very similar converter that I  already have mounted on my stock drivetrain, because nobody told me an exact answer.

Higher stall will help on engages or coupling tranny with engine getting more torque and better launch because more RPMs, that's a fact, but then whats the diff on an advertised "High Performance" torque converter with those specs from stock ?

and I'm not just talking about Mopar ones, all brands adverstise 2200-2400 stalls as "high performance" pieces.

[moparguy01]

If i recall the larger diameter converters, what are they 11 3/4" of something like that, were usually around the 1800-2000 mark. and the smaller 10 3/4 ish ones were around 2600-2800 rpm. but the smaller converters i belelive were the ones they put in the high performance cars. I've been wrong before, but i stayed at a holiday inn express the other month. 

[firefighter3931]

It appears that all 440 stock converters stalls can be used with the Comp Cam XE274H (recommended 2200) - or am I off base??? I have the 11 3/4 converter but it is a 69 that came out of an Imperial if it is the original. I really do not want to have to buy a new converter if I do not have too. OR, do high stall converters just run better? Last thing I want to happen is to have my motor die when I come to a stop or lug off the start.

DaytonaGuy, the stock 11.75 converter is too tight for the XE274H cam, inmo. If you want to keep the stock converter use the XE268H or use a looser 11in converter with the XE274H. The only engines that used the 11.75in converter were low performance 440's & some 400's....all other engines got the 10.75 unit which stalled in the 2300-2500 rpm range. If you have a factory 11in (10.75) converter it's a descent unit. The 12in (11.75) is pretty "tight" so you need to keep the cam choice conservative if you decide to use it. 

Most people refer to the converters as either 11in or 12 in....but the actual diameters are 10.75 & 11.75...FYI

As for the cam ; an engle K56 would be an excellent choice with the stock 12in converter 



Ron

[John_Kunkel]

No pre-'78 440 got the 11" converter, Lo-Po and Hi-Po got the same 12" converter.

The factory rated stalls speeds are with the factory cam, changing the cam changes the torque at the factory stall speed and the stall speed will be different.

[Nacho-RT74]

The factory rated stalls speeds are with the factory cam, changing the cam changes the torque at the factory stall speed and the stall speed will be different.

I know that happens but increasing or decreassing, How does work the variation rate ?... what about increassing compression too

[firefighter3931]

No pre-'78 440 got the 11" converter, Lo-Po and Hi-Po got the same 12" converter.

I stand corrected....thank you John. 

I've pulled a few apart over the years that had 11in converters but that doesn't mean that they came that way....someone probably swapped in an 11 incher in there before i got to it. 



Ron

[John_Kunkel]

No need to be corrected, Ron, I was in error; the small converter WAS used on the 440 prior to '78. Maybe '75-on.

I hate getting old.