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Lextreme 2800 rpm TC low stall speed?

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Old 07-29-16, 07:32 PM
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Fromthesha
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Default Lextreme 2800 rpm TC low stall speed?

Hello CL,

Long time lurker here. I have a pretty specific question those who have a Lextreme 2800rpm torque converter. I receive my torque converter and it had "Tundra" written on it. So I called, and they said it was fine, they are fairly universal. So that's OK. However, I have had it installed for a few months now, and my impression is that the stall speed doesn't feel like it's 2800 RPM. So I would like to ask those of you who have had Lextreme 2800rpm torque converter installed if you could help me out here.

i performed a brake stall this morning and my tires break loose 2000 ish rpm. Is this what everyone else experiences?
I attached a clip. Please pay the temp gauge no mind. It needs to be grounded...

trim.804D44C8-D854-49FF-A744-BCEDEBDB7C29.MOV
Old 07-30-16, 10:05 AM
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Fromthesha
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...or, are there any impressions from brake stalling a stock gs430? That would answer my question as well. I don't remember what the traction breaking rpm was...
Old 07-30-16, 10:13 PM
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clos430
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My stock TC breaks the wheels loose at about 2k rpm, with that being said just because the higher stall converter says or is a 2800 stall doesn't mean that your rpm is gonna reach 2800 rpm and then shoot out the line. From my understanding there's a lot of things that play into it, like how much power your car is making, gearing, weight and so on.

I also have a lextreme 2800 TC sitting in the garage that I've been lagging on installing, but you mean to tell me you don't notice any gains ? Are you thinking maybe it's a different stall size ?
Old 07-31-16, 10:47 AM
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Fromthesha
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I totally understand a brake stall isn't the real way to test stall on a TC. As far as it being better, It's hard to tell, but it does have different characteristics, I.e. sharper trans engagement, mostly noticeable on the highway. I have 265 series tires in back with heavy 18's, and before the new converter, from a dead stop, it wouldnt pull hard at all until 4K rpm. The tires didn't break traction at all unless I brake launched. It still won't break traction after the TC install and still feels somewhat sluggish, vs what I expected, from a dig. I expected to be pulled back into the seat from the surge, similar to a conservative clutch slip at 3k...
Mind you, this is with PPE headers, and a k&n drop in. I do have new poly differential bushings on all four points, but I would've expected an rpm flare to 2800 at launch. Maybe not idk (which is why I'm asking )
Old 08-01-16, 01:56 PM
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GSJake
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Did you buy this new from them? And it said Tundra on it?
Old 08-02-16, 12:23 PM
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Anyone else have some more input on this ? Interesting to see other guy's running this stall TC or even a PI TC and try the stall brake test just to see what rpm the tires brake loose.
Old 08-02-16, 01:42 PM
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GS400V8
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From watching this SC400 video with a high stall, at 0:51 seconds, he does not brake stall, and his tach goes to around 3K before launching.

At 1:24 seconds, he does brake stall this time, and his tach briefly goes almost to 2.8k but immediately drops and stays pinned to around 2K before launching.

Link:

Last edited by GS400V8; 08-02-16 at 01:47 PM.
Old 08-03-16, 07:17 AM
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Fromthesha
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Originally Posted by GSJake
Did you buy this new from them? And it said Tundra on it?
Well, I beleive all Lextreme TC's are reman units. They take a stock unit, tear it apart, modify it and weld it up.
Old 08-03-16, 07:18 AM
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Fromthesha
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Default thanks for chiming in..

Originally Posted by clos430
Anyone else have some more input on this ? Interesting to see other guy's running this stall TC or even a PI TC and try the stall brake test just to see what rpm the tires brake loose.
that's kind of exactly what I was looking for as well .
Old 08-03-16, 07:26 AM
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Originally Posted by GS400V8
From watching this SC400 video with a high stall, at 0:51 seconds, he does not brake stall, and his tach goes to around 3K before launching.

At 1:24 seconds, he does brake stall this time, and his tach briefly goes almost to 2.8k but immediately drops and stays pinned to around 2K before launching.

Link: 1UZ SC400 Torsen 4.08 Transgo 2800rpm Torque Converter - YouTube
I saw this video. Great acceleration from a good parts list. I didn't realize he was doing a break stall. Maybe everything is normal, but I thought I'd see some wheelspin and a little more drama with the launch of a 300hp car (without brake launching). Maybe my transmission isn't up for it. Who knows. Transgo kit and LSD are in my future for sure.
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