[jedclampitt]

Hey Guys, I have an auto that seems to be in pretty good shape. I've had my truck since feb, and put 10k miles on it. Right now it sits at 132k miles, and my tranny seems pretty strong. I was just wondering how these trannys typically fail and what some symptoms are so when mine starts to go, I know what's going on.

 

[me78569]

The tc going out is pretty common.

If you are worried about it follow the first level on this page.
http://www.cumminsforum.com/forum/r...e-stock-transmission-upgrade-list-sticky.html

 

[jedclampitt]

The tc going out is pretty common.

If you are worried about it follow the first level on this page.
http://www.cumminsforum.com/forum/r...e-stock-transmission-upgrade-list-sticky.html

Sweet thanks. I tried looking for this but I guess I overlooked it. I was just curious as to whether it was typical for clutches to go out or more like shearing input shafts and gear teeth

 

[dozer12216]

Soft parts (clutches, bands) are most frequent failures. However generally a loss of pressure in a particular clutch preceedes it's failure. Gotta fix that also....

 

[jedclampitt]

Soft parts (clutches, bands) are most frequent failures. However generally a loss of pressure in a particular clutch preceedes it's failure. Gotta fix that also....

Ok, I think I can handle that a little better. I mean I don't plan on making ridiculous amounts of power and pulling or anything. Just want a truck with some pep and enough to pull itself and a trailer out of the way. So an $8k built tranny swap isn't necessary then I guess.

 

[me78569]

if you stay under 350-400 a good single disc tc upgrade and vb does wonders.

clutches wear, bands wear, nothing out of the norm there.


The problem isn't the 47re. paired with a stock Cummins the 47re works fine. Sure some fail, but there are a lot of stock powered Cummins out there with stock 47re's working fine behind them.

We just get spoiled with how easy it is to add power. People tend to forget that a "small 65 hp tuner" is actually upping the power by %25. That's not a small increase in power when it has to do with what the engineer at dodge had in mind. They cannot be to blame for not designing a tranny that holds that much over stock reliably.

 

[jedclampitt]

if you stay under 350-400 a good single disc tc upgrade and vb does wonders.

clutches wear, bands wear, nothing out of the norm there.


The problem isn't the 47re. paired with a stock Cummins the 47re works fine. Sure some fail, but there are a lot of stock powered Cummins out there with stock 47re's working fine behind them.

We just get spoiled with how easy it is to add power. People tend to forget that a "small 65 hp tuner" is actually upping the power by %25. That's not a small increase in power when it has to do with what the engineer at dodge had in mind. They cannot be to blame for not designing a tranny that holds that much over stock reliably.

I gotcha. That makes me feel a lot better. From what I've been told, planetary transmissions are a good setup for power transmission. But I totally understand that. I run into that problem quite a lot in my designs at school haha