What converter stall should I use?

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440DART1970

440DART1970

1970 Dart 446ci Swinger
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I in building a 1970 Dodge Dart with a 440 Sure Grip rear with 323 for now. my 727 transmission guy recommends 2800 to 3200 RPM.
what converters do you have and what do you recommend, below is my motor specs

1978 RV 440 motor. +30 0ver = 446ci 10.35.to1 fordged TRW Speed Pro pistons, Steel crank internally balanced. Comp cams .488 ,491 lift - Duration @.006 274, 286. 915 heads slightly cleaned up ports, upgraded vale train & Springs, Johnson BB lifters, Aluminum water pump housing and water pump, Speed Pro Harmonic balancer, Holley Street Dominator intake, Holley 750 mechanical DP, MSD 6AL, MSD 8546 race distributer and coil, Schumacker Ceramic coated Tri-Y header, Motor mounts and Torque arm.
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Same old answer.
Ask the converter manufacturers, not the trans guy or the general public.
 
like stated above.. call a converter company and see what they recommend..


and yes the right converter makes all the difference in the world...


i'd call:

dynamic
122 Sandy Dr. Suite F.
Newark Delaware 19713
Phone: 302-454-9203


ptc Contact Us - Performance Torque Converters


ultimate
20464-A Chartwell Center Drive
Cornelius, NC28031
704.892.6837

i prefer getting a custom unit built to match my combo.. may cost a little more but man the difference in performance and street manners is incredible...

just make sure you are 100% honest about the combo and your intended use or you will not be happy. they are gonna ask you all kinds of questions about the car and engine.. weight, cam, gear intended use...etc...etc...etc.. the more info you can give them the better..

when i did jamies dart with a mild 360 i went with a 9.5" converter built by dynamic. flashes to 3500 i think it was (got the info around here somewhere) and cruises the streets awesome.. car only has a 2.94 gear in it right now.. i spec'd the converter for a set of 3.23 gears that i haven't put in yet. too lazy..

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TrailBeast said:
Same old answer.
Ask the converter manufacturers, not the trans guy or the general public.
Click to expand...
Trailbeast is right on the money. Contact one of the manufacturers and give them all the information on your setup and see what they recommend. You're not sure I see on what axle ratio you are going finally going to use and if you change it, it will effect the converters performance . Be HONEST with your information or you'll probably get a wrong converter. I've seen too many guys not be upfront when ordering a converter and end up disappointed. Abodyjoe has also given you some sound advise by saying go right to the source instead of someone who sells but does not make converters.
 
Stall is usually best where peak torque happens or 1500-2000 rpm below shift points from what I've read. Suppose that number comes out to a 4000 stall for a 69 440 Roadrunner and you order one from your favorite speed shop. You put that sucker in and go for your first test drive and it's stalling way more than you want. That's because Wile E Coyote down at Acme converters rated that stall behind a 360 in a Duster for a middle ground, ball park number. I've experienced this first hand. Got lucky with the first stall from a popular company with a 2400 stall that was right on the money in our combo. Had to pull it out to replace a bearing and didn't want to miss any weekends of racing so bought a store brand that was advertised as 2800-3000 and it ended up not even stalling as much as the 2400. Finally listened to the guys on this forum that suggested ordering directly from the converter company. Mine came from Dynamics and they suggested a 9.5 converter that stalled at 4000 for our combo and it stalls on the number. The extra you spend could possibly keep you from having to drop that transmission another time.
 
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