Has anyone actually installed a high stall torque converter?

For slightly harder launches, I know we have the option of the 3.27 gears (6.5% lower gearing than 3.07). The RPMs are already fairly high cruising down the highway at 75 mph though. I don't really want to raise them higher.

It seems a high stall converter would be a good way to get out of the hole quicker at the dragstrip, but still keep the same cruising RPM (the converter locks up when cruising, no slip).

I was reading some threads over on MBworld and they really sparked my interest. I would consider it a good mod if it were worth 2 tenths or more in the 1/4 mile.

I talked to a friend of mine who runs a 10 second new Challenger on NOS with a built drivetrain. He runs a 4200 stall converter. He said a high stall converter is a "game changer". With the amazingly flat torque curve these 32K engines have, we wouldn't want anything that high. The 55K MB guys sound happy with the 3000 stall converters. Since we all use a MB 722.6 / Mopar NAG1 transmissions, there are LOTS of shops that can supply them.

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Once you get into the higher cost per ET mods, like stacked pulleys, intake manifolds, and headers, a high stall torque converter starts to look pretty attractive.

 

talk to Bryan....with the turbo charged SRT. I think has one.... Eurocharged was selling them. I can't hook up now coming out of the hole, so going even higher rpms isn't going to help me...and I want a 3.47 rear end.....if we ever figure out the tcu tuning....

 

Moparbust had one right after they were released and I believe it didn't work well for him. Too many unknowns with the TCU for me but in theory, 2800 to 3200 would be what I'd want.

Les

 

I have been running the Eurocharged TC for about 6 years now. Driving normal, you feel no difference than the stock converter. Blip the throttle and hold on. My converter flashes to about 3000 rpms and I can get about 2600 out of it before I over power the rear brakes at the track. I am probably pulling my engine out again shortly, and may put my converter up for sale and go with something a little looser since I am turbocharged.

 

I may have some interest....but I will need drag radials for sure then....lol Let me know what you do...

 

Thanks for the input everyone!

I can brake stall my factory converter to 2300 RPM MAX. But I have a stacked supercharged setup that makes a lot of low end torque. Actual stall speed varies with the torque applied. At the track I won't brake stall it over 1800 RPM or I risk pushing farther into the beams and red-lighting. You might want something a little looser with a turbo.

I was going to say the same thing, but doc beat me too it.

 

Doc - There is one person ahead of you that has shown interest in the converter, but I will keep you informed.

Matt - The Hoosier 275/45R17 Drag Radials work great for me on a prepped surface. I launch at about 5psi, and hit 25psi before the 60' and the tires hook very well. Just a little heat in the burnout box, but not too much as they can/will get greasy.

 

sadly the slk32 just doesn't have the fender space to run wide tires. 265 was the widest i could fit without the rubber sticking outside. matt i know a few mb guys run the t/c but it isn't 100% perfected there are more underground stories about issues than most realize

 

Not a problem Bryan....not that I really need it....but, nice to know what Hoosiers to buy to replace my ole Hoosiers....275/45/17's.... Hopefully spring will have time to sort out the rear end gear change, TCU, and put the drag radials on....and see what we can do....

 

What kind of issues? I saw someone selling converters on MBworld and it looks like Fabtech and eurocharged sell them too, but I am guessing they are just having a converter shop build them and are marking them up. I would more likely go to a known good converter builder directly. I have heard good reviews of Paramount Performance and NAG1/722.6 driveline stuff is all they do. $879 for a converter isn't bad either.

 

If you do change from the 307 to the 327 there are some of us that want the 307 instead of the 327 ring & pinion.
Would work better on our 6 spd with the 1st and drop 6th gear around 200 rpm at 75 mph

 

FYI... The NAG1 converters will not for in the Crossfire. The bolt circle is different, as well as the pilot bushing.

 

OK, thanks. I knew there were a couple of different bolt circle sizes at least. A lot of shops seem to want to to send yours in and they modify it as needed. Should be OK then, right?

 

I have my engine out, and I am willing to sell my Eurocharged converter if you are interested.

 

Thanks for the offer! The problem with this torque converter is... that I want it. I can't spend the money right now though. I hope someone else gets to make use of it.

 

How much do you want for it? And is it for a NA crossfire?

 

doc Rudy has the 346 rear ,, i tested it for a little over than a month, it works great, i am going with the one I got from Rudy, and he has another one ,,,u could be first to put the 346 behind a v6,, you will like it. jim

 

I sold the Eurocharged converter a few months ago. I now have a UPD converter and 3.27 rear gears.