Question about trans cooler for 727
#2214753
12/15/16 11:01 PM
12/15/16 11:01 PM
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Joined: Dec 2010
Posts: 53 Middle of Illinois
Ski 61701
OP
member
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OP
member
Joined: Dec 2010
Posts: 53
Middle of Illinois
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I figured I would post this question here since there are quite a few racers who hopefully will give me some insight. I have a 1965 727 that was rebuilt and it has a 4 quart aluminum deep pan. The trans is going into my 64 Polara with a 3 core 22in radiator. The torque convertor is a PTC 3500 stall, and the rear gears are 3.55 and a 28 tall tire. The convertor was recommended to me by the trans builder. Since I plan on making some trips which are about 100 mi away, I did some preliminary math and I am around 3000 rpm at 65mph. So needless to say I dont want to cook my trans, and I want to add an additional cooler. I came across these 2 from Derale, and they are quite large (11 in across)and I am concerned that since I am blocking half the width of my radiator, could I run into engine overheat problems in town? Or is this over kill for a trans cooler, would I be ok in using either or? Or does someone have a different option of what I can use. http://derale.com/products/fluid-coolers...elay-kit-detailhttp://derale.com/products/fluid-coolers...ermostat-detailI was at my local Napa today and they had their house brand of Dextron III/Mercon fluid on sale. Since I cant find plain Dextron anywhere, and I was told NOT to use synthetic fluid, is this ok to use? Thanks for the input.
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Re: Question about trans cooler for 727
[Re: Ski 61701]
#2214798
12/15/16 11:53 PM
12/15/16 11:53 PM
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Joined: Aug 2003
Posts: 43,230 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,230
Bend,OR USA
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If your NOT planning on running the fluid through a stock type tranny heater in the radiator you should run a good trans. temp gauge so you can monitor the actual tranny fluid temps, it is real easy to keep the fluids to cool(under 160F) If you have that problem block the cooler off to make it get it to 160 to 240 F driving temps As far as which tranny fluids to use go to Wal-Mart an buy their type F fluid and run that BTW, do you know the correct way to adjust the shift cable on that push button trans? If not learn first that before driving the car and burning up the new parts
Last edited by Cab_Burge; 12/15/16 11:55 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Question about trans cooler for 727
[Re: Ski 61701]
#2214857
12/16/16 01:28 AM
12/16/16 01:28 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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You shouldnt have any problems with the trans temp with that cooler... move it over to the side and space it off the radiator a couple of inches..I run a cooler about the same size with out any radiator cooling, 5000 stall conv and OD with 4.10 gears.. at 75 mph I turn 2900 rpm and I have no issue with heat.. with the OD and turning less rpm I have more slippage than you will so dont worry about temp
Last edited by MR_P_BODY; 12/16/16 01:30 AM.
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Re: Question about trans cooler for 727
[Re: Ski 61701]
#2214914
12/16/16 02:49 AM
12/16/16 02:49 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If you mount it sideways just put the return line on the top.. that will keep any air moving back to the pan(the return line is the one near the rear of the trans)
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Re: Question about trans cooler for 727
[Re: Ski 61701]
#2214915
12/16/16 02:51 AM
12/16/16 02:51 AM
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Joined: Jul 2004
Posts: 19,318 State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,318
State of confusion
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I run a B&M honeycomb trans cooler I bought many years ago at Kragens and is it's just tied into the trans not the rad. In hot Vegas/Calif. summer heat it never sees above 180 but generally runs cold and is hard to get above 140-145 and it's mounted in the lower ft. valance behind the lic. plate.............
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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