i did have it backwards sorry, leave the torque reduction on, im putting mine back in my program

 

Ok St. Elmo.. so you are saying to leave the torque reduction "on" Meaning keep the fart shift. Why? I thought in your original post that greg was telling you that this helped fuse the clutches?

Lets get to the bottom of it, but i thought the tranny was a lot stronger than this.. i didn't think we needed a "fart shift". I was under the impression that the tranny did better without it.

Plus, the ultra cool 1-2 shift rear tire bark!!

 

I love greg and I stick up for him all the time from reading posts like this Funny thing is I don't own any of his products yet. I will once the money piles in although

 

Torque reduction is a loop in the PCM programming that under WOT on the 1-2 shift "cuts" the engine a) fuel or b) timing (I've heard both and I'm honestly not sure which one it is) for a few milliseconds to reduce the shock to the geartrain during the shift. The intermediate clutch is the weak link in a 4R100, and a very hard one to make any better, too. It's designed more or less for diesels, which actually make more torque than the L, but not at the RPMs, someone determined that the high RPM shift at pretty near peak torque would cause some long term problems, and from what I've seen, they were right. I pretty much think if you brought me 10 boxes, 5 which had it disabled, 5 stock, I could tell you which were which, almost all the chipped trannies I work on have moderate to sever wear on the intemedaite clutches.
For almost all clutches, it's possible to add more plates, either you get a thinner pressure plate or modify the drum, but the intermediate clutch splines to the case, so the drum option is out, and the splines in the case have a void at the bottom of the clutch, so cutting the pressure plate is out, the only solution was to just put real good plates in it and hope. I mostly use BLue Plates, much better than the factory plates, but no increase in surface area. I have now some single sided plates, which through decreased gage of steel allow 4 instead of three plates (well, 9 actually, four interior and 4 exterior with a pressure plate) and being single sides they throw the heat off much better, so they work a lot better, with single sides you can remove the torque reduction and it'll last a lot longer. But if you don't want to rebuild the geartrain, I think you should leave the torque reduction in the program, it's there for a very good reason.

G

 

Greg,

Should I leave torque reduction on even with a monster box?

--Steele

 

That kind of depends. When it was built, (I've made some major changes in the last year or so) how much power, a few other things, but it should be fine. I've still never had anyone burn one up from too much power, even with the blues, or not that I know of anyway. I think it'll be okay, but when I started looking to make improvments, the intermediate was the place that needed it most. The single sides I'm sure are okay, the blues I think are. If you blow it up we'll figure something out.

G

 

I'm only running a little over 500 torque on the street tune with your 2nd generation box. I'll give you a call when I put in a PSP powerplant.

--Steele

 

you won't have any problems, 500 lbs isn't even pushing it.

G

 

Well.. so much for my theory. I was convinced the torque reduction being off would actualy help. Oh well...

I think i will leave mine off though gregg.. the 1-2 shift bark is way too addictiing!!

 

I have the single sided plates, don't I, Gregg? But doggone it, why won't you tell me how to get one of your cooler kits?

 

I'm pretty sure you do, your build sheet will tell you, look under the line that says "Intermediate"and see if it says "SS' or Single Sides. Shoot me an e-mail for the cooler, I have them in stock now.

G

GBEvans@peoplepc.com both for E-mail and PayPal

 

Gregg, I got my box from you back in early 2002. I have put 12 K miles on it since April when I got the Kennebell blower and dyno 567 rwhp and 640 lb ft with the race side of the chip. That is with no nitrous. I'm guessing I have the old plates. They seem to be holding up well. I'm not an easy driver.

 

but it's pushing factory tranny right? whats the limit at the wheels for torque on stock tranny? little under 500#'s? thanks, Shane

 

The factory transmission will take 500 lb/ft at the flywheel, and the margin of error is about 1 pound. The stock L is just barely able to handle it more or less.

Gat the flywheel