Hi all,
I've been debating on a TC for awhile now and it seems that from what I've heard from alot of people on here that the PI Dragon TC works well..I have talked to a few people over the last couple of weeks about stall speeds that concerns me.
First, I talked to a guy from PI - I told him I had an upgraded rear end with 3.76 Ratio and I asked him what is the best stall for my setup? He said, "3000 Stall was best".. It sounded alittle high from what was already discussed before with some of you all.
Later, I talked to Eric at Rod Millen - and He said "3200 Stall without LSD and if you had one It was lower according to application.. He didn't know because he said Rod Millen's TC was a PI TC. What is the Stall Speed Lowered too? He said when they made the order with PI that they them about the Rear End changes and they make a different application. Even more puzzling..By the way (If you any of you guys know Craig from Rod Millen - He's not there anymore.)

I talk to Mo at SRT and His Stall was 2800. Which I have seen most everyone has at Club Lexus. I know alot of you have PI TC and Some RMM TC same thing but what is the "Perfect Stall Speed"???
I know some of you have 3.76 LSD with the PI TC..
I need to know what is the what stall speed works with the 3.76 LSD..???

I have some friends with Mustangs and Camaros with TC with Stall higher than 3000 and They didn't like them, they said it make the car hard to drive "normal" and was real jerky.. And that the stalls 3000 and above is made for just pure drag racing. Thats why I have really Considered SRT's Spec PI TC.. Other Companies believe different.. Who knows.. But From my point of view go with something has worked well for many..

Input on this Topic is Greatly Appreciated!!

Thanks,
QWK

 

Stay with 2800 stall. With 3.76 ratio even 2800 stall TC will fry your rear tires. But if you go even lower, why bother just use the stock one( 1800 stall). I have 2800 stall TC and 3.27 ratio LSD, I'm happy. Normal driving is just as "normal" as it should be

 

1QWK – I feel your pain – I also got some conflicting information directly from Precision Industries.

My situation was simpler than yours since I have the 3.27 stock ratio and didn’t expect to change. I called PI and talked to a guy that suggested 3200???? I wasn’t comfortable with that so I later e-mailed them asking the same question - and got a 2800 answer.

After searching CL for other experiences I also e-mailed Steve at Carson – he contacted PI and also got the 2800 response. Mo at SRT recommended 2800 for 3.27 and a number of guys here (including Jacob) all were pleased with the drivability of the 2800/3.27 combination, so I went for that and I’m also pleased with the way it responds.

That doesn’t help you with the 3.76 answer but does show that you can’t necessarily depend on some (possibly uninformed) individual at PI.

I’d expect to get some quality responses to your post if it can remain current for awhile – you might bump it every so often until some of the more knowledgeable members get a chance to see and respond. Sorry I can’t be more helpful, but a guess isn’t what you need.

 

I really appreciate both responses from JacobT and Garnet..
It has been disturbing not getting a straight answer from Precision Industries. The last time I talked to Mo, I asked him about the TC specifically for my application - he said "the 2800 is the best all around stall speed" But I had to do alittle research found that He was right..

I think I have seen on Club lexus a few members with TC 2800 with 3.76 Combo rolling on 19 inch wheels like my setup..
I am pretty sure it was DEX and MeanGene..
I like to know what they thought and experienced with their own cars running 2800 Stall with 3.76 LSD..But I have not seen them on in awhile..


I appreciate all the response..

I'm pretty sure that SRT's Spec 2800 TC is for me.
I just want to be sure with other people that have it on their cars.
I know I have heard some members experience transmission problems or some king of check light on some GS4 and 430's..
Mines a 99 GS4. I hope I will not have any problems..

Thanks for the help..
Any Additional Input Is Appreciated...

QWK

 

Stall speed within ANY given TC is dependent on engine torque vs vehicle weight. Increase the engine torque and the stall increases, decrease the weight and the stall speed decreases. The weight is the mass or the resistance the engines torque must work against. Higher gears (higher number, shorter ratio) have the effect of reducing the work the engine sees and therefore would reduce the stall speed slightly. I think the 2800 rated TC would be just fine and with the LSD give you a VERY quick car!

 

Hey dude,
Thanks for the info, I'm pretty sure i am gonna really be happy!!
BTW-Great Kill on that SS Spining too much. Did you read my Story where I killed a Saleen Mustang with Traction problems..

Gotta Luv Lexus!

QWK

 

In that post, you implied that there was a TC currently in your car which, along with the 3.76 LSD, helped "kill" the Mustangs in your town:

I am not sure which TC you referred to in that post, but I can tell you that the Swift / PI 2800 stall feels "seamless" and is certainly a siginifcant performance improvement vs. stock after riding in two GS400's with this TC installed. I think it would be an excellent choice for you and should reduce ET's when you get it installed and to the track. I know it will be one of (if not) the first performance mods I make to my future GS4.

 

Actually Tom he said that "It was last summer before I had modded my car. The only thing I had on my car with Borla Exhaust and Bodykit and 19 inch wheels lowered with Eiabachs.." and that ..."but recently I have the Supra LSD and PI TC I'm putting in soon". Let's cut 1QWK a little slack, ok?

The second point Tom makes is a good one - both Dex and I have the PI TC with 2800 stall; mine with TRD LSD and stock gears and his with Supra Torsen 3.76 gears. You won't be disappointed with driveability (or newfound launch power) with the 2800 stall unit. Dex has 19's in the rear (factory 17s right now) and I have 18's.

 

My apologies to 1QWK for the the misinterpretation.

 

1QWKGS4: In the "'99 GS400 Vs. 2001 Saleen Mustang," you posted that you already have a TC. That post was made on the 27th and this post was started on the 22nd. I am assuming that you didn't have one on the 22nd (hence this post) but you say you do have one now. How did you manage that?? I am not doubting you, just wondering. That was extremely fast. I have been waiting on my PI TC for 3 weeks now.

 

Not to speak for 1qwk, but I think his wording in that post (just happened to cut and paste it above) "but recently I have the Supra LSD and PI TC I'm putting in soon". Meaning:

he has the Supra LSD now
- and -
PI TC he's going to get soon.

Just the way I read it; I could be wrong. We'll let him confirm .

 

Ya, I found the section you are referring to hard to follow also, but I am talking about another post. In the post made on the 27th, it says that he already has the TC.

 

ahhh the " But now I have TC and 3.76 LSD and more.. " reply.

Hmmmmmm. OK 1QWK, time for some digital pics of your ride and today's paper

 

Who are you getting yours from? There's a group buy in classifieds that seems to have died.

 

Bitkahuna, I PMed you.