A good tranny shop should be able to get rid of it.

cst .. I knew what an Okie was. I used to have to go to a little podunkt town, worse than my town, to do some work up around Tulsa. There was NOTHING there except the industrial park and a couple hole in the wall resturaunts.

 

A looser converter will make the shifts softer at part throttle, but they should be quick and firm @ WOT. I wouldn't do that washer, but hey that's me. The nature of big stall and small case is to soften low throttle shifts and not to have tire barking ones at WOT.

If you think about how hard you are tryin to get that 4L60E to shift w/ a high stall with huge feed holes and extra washers remember the stock internals suck. Steel input shaft to aluminum drum...

 

What's your reasoning? I figured it would help get the transmission to operating temp but Art Carr, the man, not the company currently selling transmissions under his name, and TCI both suggest using only a properly sized external cooler.

Look at the TCI FAQ.

 

The fact heat exchanger will pull a lot of heat out first...that's what it's supposed to do. Then dump the temps down more with an external cooler. I don't know about you but my trans temps aren't being overly heated via the cooling system. My truck's coolant runs around 180-190* tops. Trans temp with the fact cooler stay around 160-180*.

The cooler you are talking about trying to run off the tranny only would be huge...read will not fit easy. Besides that, ATF like motor oil is best at a certain temp... it is not as effective when cold. I think normal temps for the tranny are supposed to be like 150-200.

Yeah the real Art Carr is Cali Performance Transmission now...

 

I feel that way too but when Art asked me to ditch the factory cooler and run the setrab oil cooler exclusively I felt obliged to listen to his many years of experience.
With that said, I bought a Denali cluster so I would have a transmission temperature gauge on the dash.

Just curious why you had emphasized DO NOT.

 

With that said, I bought a Denali cluster so I would have a transmission temperature gauge on the dash.



Where did you mount the temprature sending unit? Or is there a connector near the transmission or under the dash?

 

It's already there ... just plug up the other gauge cluster and it works.

I wouldn't bypass the radiator either ... unless maybe you are seeing temps less than 100 after everything gets up to op temps, but at that point, the engine coolant may be warming the fluid up so that it is getting that high .... I still wouldn't bypass the radiator. Maybe he meant ditch the little POS tranny cooler. I would bet that's what he meant.

 

Ah the other voice of reason on the transmissions. I have never, never seen anyone not use the factory heat exchanger in the radiator. That gets your temps down the most. I am no engineer by any means but if you think of heat transfer of fluids, I'd assume that the larger volume of liquid could drop the temps more with a 28-34" core and like 17" tall (that's your heat transfer medium) the little built in cooler is like 12" tall... better than a little 7x14x1/2" one could ever by itself.

Acutally...I remember a thread about this in the Auto Forum on this site a few months back. Go do a search or post up there and see what everyone says... Some guy did that and his temps were actually a lot higher w/o the stock exchanger.

Maybe ArtCarr's recommendation was for a drag setup only not a stop+go street scenario.

Eitherway, sit and think about what we've said. It makes perfect sense to me...still don't believe it? Go ATAP temps with and without after sustained driving to get the facts. If not, don't **** and moan about an overheated trans to us.

The factory engineers stuff (not always the best) but adequatly for stuff. If the stock heat exchanger was bad, why don't you see all cars with external ATF coolers? Oh...my Z71 has the factory HD towing package that utilizes both coolers... radiator and small aux cooler.

I hope I don't come off as a dick or anything but I am trying to explain this as clear as possible.

 

I don't think that was directed to me .. but I wanna add something to mine.

My given scenario where the ATF was being heated by the coolant was under extreme freezing, massive shrinkage from walking to the front door to the truck kind of weather. I was in no way saying to bypass your radiator. I think maybe he meant run through the radiator, and not the factory little POS cooler AND the Setrab one, just run through the radiator and then the Setrab one.

Was I not clear about it? I did have a long day yesterday.

 

Flyer... I was trying to say you were right. Sorry for any mix up thurr...