I was just wondering if someone could post the actual specs for the torqueshift transmission. Stuff like the power and torque capabilities, gvw, gcw ratings, just a general chart. Thanks!!

 

It's a helluva lot more than the Allison and Dodge's tranny in stock form!! I'm not sure about specifics, but I've read reports that it can handle somewhere around 900 ft.lbs of torque in stock form. Someone will be along shortly to answer with specifics. I just threw in the bit about the Allison because we tried throwing a little more torque at my dad's Allison and it instantly went into limp mode.

IMHO, the TorqueShift is the best tranny in a light duty truck right now!! And I'd love to see somebody prove otherwise!

 

I don't know the actuals either, but from what I've read, it's called a 5r110 and the 110 means 1100ft-lbs torque. That sounds a bit much, but with all the mods I had on my truck (still listed in sig) I was only running a performance torque converter and it handled everything I could throw at it without going into limp mode.

 

I do not believe that Ford has ever officially released specifications on the trans. However I have been told the same thing about the 3 number designation after the "R". It is supposed to represent the transmissions maximum torque at the input shaft. 5R110 being 1100 ft. lbs. and the older 4R100 being 1000 ft. lbs. If this is true, the upcoming 6R140 should be a beast.

 

Some specs are here:

http://www.charlietranny.com/5R110.htm

 

thanks for the replies everyone, my friend just wanted to compare it with specs on his allison, he got bashed pretty good for asking if ours is tougher than his on the dieselplace site

 

The 1100 lb-ft is correct, but that's AFTER the torque converter multiplies engine torque by 1.9:1. That means it can take about 580 lb-ft of engine torque.

 

Mark, where did you get those numbers? I'd always heard the 1100 lb.ft of torque ( It just seemed high), but I'd never heard that it's after the t.c. multiplication. I'm just curious because there are a lot of guys on here running much more than 580 lb.ft of engine torque and they don't have a single problem....myself included.

As for the comparison of the Allison, just remember that GM "owned" Allison and their namebadge. I've yet to meet a real GM guru who will admit that the Allison behind the Duramax is a real Allison tranny. They'll all admit that you'll have to bulk-up the Allison tranny prior to putting any real power to the Duramax motor. In all fairness, it's a good enough tranny if you're running stock power.

 

There are some mistakes in the information at this link:

The Torqueshift was installed in 2003 PSD trucks equipped with the 6.0.

The transmission is really a 6-speed

1st = 3.09:1
2nd = 2.20:1
3rd = 1.54:1
4th = 1.09:1
5th = 1.00:1
6th = 0.71:1

The transmission only uses 5 gears at a time depending on engine temperature.

Cold Engine Temps = 1,2,3,4,6
Warm Engine Temps = 1,2,3,5,6

 

Just remember the 580Lb ft number is the rating of the transmission by FMC. You can usually exceed the manufactures ratings, but you will shorten the life of the transmission. How quickly this is shortened will be determined by your field testing. Just because it has not failed with increased Torque numbers does not mean that you are not prematurely wearing parts and shortening the life of the transmission.

 

I know from experience a 4R100 in stock form can't handle 600 lb-ft of torque!

 

I got these numbers from my years as a Ford trans engineer. Three of those years I worked on the Torqshift.

Exceeding that number usually won't break it. The trans was designed to last a lot of miles. Running more torque will probably reduce it's life. Also, unless the truck is only used on a drag strip or truck pull, it won't be running any more torque than stock. It only has more torque when your foot's on the floor.

 

Blackhat, do you know if there is a device I can install to select what ever gear I want to be in? How did you find out there are six gear ratio's? I've noticed while towing there seemed to be a gear between what I thought was 4 and 5. I thought it was the torque converter slipping.

 

Dieselmann's site has some Torqshift info:

http://www.intellidog.com/dieselmann/60psd.htm

 

There is not a device that will let you manually select each individual gear in the Torqueshift. If you will notice there is less than 10% difference between 4th & 5th gear ratio. When the cold strategy is used by the PCM & TCM it just holds slightly higher rpm's to warm the engine quicker. The small difference between 4th & 5th gear would gain you effectively no benefit in most circumstances.

The information on the Torqueshift i posted is from the Factory Service Manuals. They can be purchased from www.Helminc.com

The feeling you may be getting between 4th & 6th or 5th & 6th is probably the TC locking & unlocking. In Tow Haul mode the TC locks in all gears, locks sooner and stays locked longer, and also provides engine braking in all gears.