I was told by the transmission shop that i should never four wheel with my tranny and its alread week from the 35's i have on it. Its an 02.Any input to build it up or anything?

 

They arent the strongest trannies. I had mine built, $1800 later, I can pretty much do anything with it.

 

how can i do that? what parts would i use?

 

I would take it to someone and have it totally gone through. I had all redline clutch plates put in it, extra wide bands, transgo shift kit (supposed to strengthen the valve body up for low end torque). Pretty much just all top of the line stuff. Also upgraded the convertor.

 

so just red line clutches and a torque converter? i just had them install a factory tech valve body will that work instead of the transgo?

 

if you ask me the tranny is pretty tuff, i tow regularly, and offroad twice a week (when i am not in Iraq) and the tranny has never gave me any problems i installed a factory tech valve body for shift improvement. when running larger tires it is a must to regear, it will get your tranny running at the RPMs it was desighned to run. any info let me know.

 

The biggest thing is keepin it cool. These means a large aftermarket stacked plate cooler, and if you want the insurance, a tranny temp gauge. Keep it under 225ish and you should be fine even stock. (although upgraded goodies are nice too!)

Adrianspeeder

 

I forgot about the cooler. I also upgraded that.

 

A trans temp gauge is not extra insurance, its more of a necessity. I toasted 1 4R70W in my 97 between the 35s and offroad. It didn't even make it to 75k, and the new trans was on its way out in a year. Though in its defense I had it done by Aamco, which is a mistake I'll never make again. As was stated, heat kills it, and when you're wheeling you're not typically moving that fast. Without air moving over the trans cooler you have effectively little to no cooling.

To make it live do the following.

Unplug the trans from the stock oil to water cooler (radiator). Because if you overheat offroad, guess what your trans oil temp does. Yep, thats right, it goes up to the same temp as the water. This happened on mine and led to its downfall.

Run a very large stacked plate cooler. I got mine from summit, but you may also want to look at a V10 cooler. Most of the guys with built trannies behind PSDs are running them.

Install a small fan on the cooler that is run by a thermostat with a manual disconnect switch in line. This will save you because you can be going slow, but the fan will still pull air across the cooler to get the effect you want.

Install a trans temp gauge and watch it like a hawk. Anything below 200* and you're golden. Above that you might think about letting it cool. At 220* you should have stopped about 10min prior to let it cool. Plan on doing a fluid flush asap. Above 230*, get out the yellow pages and let your fingers do the walking. You just toasted the thing and run a good chance to have slipped/burned clutchs.


Also one other thing to do, and this will actually help out more than anything. Though I'd still do the above regardless. Regear the truck!!!! Either 4.10s or 4.56s (4.56s will be make you much happier) will get the job done. Trying to turn 35s with either 3.55s or 3.73s puts a very heavy strain on that transmission. After I put on my 35s on windy days I could not run in OD. The same with hills or towing. That is ALOT of abuse for that thing.