Teans cooler help

[onebadasscutlass]

I need help figuring out what size trans cooler I need for a th350. I just got ahold of a aluminum radiator but it does not have a built in trans cooler what size cooler would work? Its going to be mostly street driven. it does have a b&m 2400 Hole shot converter in it.

 

[thrasher]

I don't know if you're going to find the perfect answer to what you're looking for. Just people telling you what they run.
If you had a temp gauge for your trans it would better help tell you what you needed.

I've run that converter in my daily driver car for the last two years.
TH350 trans with a 3.08 rear gear and 26 tall tires.

My cooler is 15 to 5 1/2 inches long and the line passes through it four times.
I've had the lines hooked up to just the cooler but I'm thinking of running the return line from the cooler to the radiator to keep heat in the trans during the winter.

You might want to take that radiator to a shop and have them flush it cause that rust coloring don't look so good.

 

[LS1GN]

You might not like reading this. Liquid cools wayyyyyyyyyyyyy better than air so it is common to run the trans fluid in series, through the radiator (wet) then to an external cooler. A manual trans radiator is not recommended for your application and that converter will make it run even hotter than normal.

 

[online170]

You don't need a very big one. With a big stall the fluid heats up a lot, so choose accordingly. And make sure you mount it in a location with lots of air flow.

Two styles of cooler.
1) Stacked Plate (more efficient, more expensive).
2) Tube and fin. (not as efficient, but OK for street Duty. WAAAAAAAAAAAY cheaper).


I ran a Tube and Fin on a street car with 1800 stall rated torque converter (about 15x6), and it did fine. On my other car, im using a stacked plate (about 12x12), but the trans did get hot a few times with the 3500 stall rated converter. Im going to add an air damn to cure the problem, or failing that a fan on the trans cooler.



The downside to running a trans cooler in the rad is that the trans will never be cooler than your engine. Your engine gets pretty hot sometimes.

 

[onebadasscutlass]

Yeah, I'm going to flush that radiator. It came out of my uncle tube chassis s10. All it ever seen was water so I expected it to be a little rusty. I was just a little worried that if I buy something that it was not going to be as good as the stock radiator and burn up my trans

 

[onebadasscutlass]

Thanks for the info guys much appreciated.

 

[pontiacgp]

You might not like reading this. Liquid cools wayyyyyyyyyyyyy better than air so it is common to run the trans fluid in series, through the radiator (wet) then to an external cooler

One reason the transmission rad is housed in the radiator is so the transmission fluid gets up to temp quicker and maintains it temp. Transmission fluid is useless if it's not hot enough and will damage the transmission

 

[onebadasscutlass]

So if i get a cooler that's too big I can damaged the trans?

 

[onebadasscutlass]

Does anybody know what the operating temp on the trans should be?

 

[pontiacgp]

since the temp should be the same or slightly than the coolant temp in your rad so at least 180º to 200º