GENERAL Home Ford Index

Trans Cooler Lines Location and Fittings

As with any new project you always seem to run into stuff that you knew at one time but forgot exactly where you found it or put it. Well, I was installing a trans cooler in my 54 and needed to know which lines were in and out. I also needed to fabricate new lines so I also needed the fitting sizes. So after some quick searching on the web this is what I came up with.

GM Trans Cooler Lines
Transmission Line Size Cooler Out Cooler Return
Powerglide 1/8 NPT Lower Upper
Powerglide (Dedenbear) 1/4 NPT Lower  Upper 
TH200C Metric, 200R4 1/4 NPT Upper  Lower 
TH250/350/350C 1/8 NPT Lower  Upper 
TH400/700R4/4L60/4L60E/
4L65E/4L80E(up to 97)
1/4 NPT Lower  Upper 
4L80E/4L85E(97 on) 1/4 NPT Front  Rear 
TH425      Outer - Farthest from
the torque converter
4T80E   Main case  
FORD Trans Cooler Lines
Transmission Line Size Cooler Out Cooler Return
C3/C4/C5/C6/E40D 1/4 NPT Front  Rear 
AOD/FIOD  1/4 NPT Upper  Lower 
AODE/4R70W 1/4 NPT Lower  Upper 
ATX      Line nearest the pump
AXOD-E/A4XN/A4XS     Lower
E40D/4R100 1/4 NPT Front  Rear 
FMX     Rear
MoPar Trans Cooler Lines
Transmission Line Size Cooler Out Cooler Return
All Torqueflites 1/8 NPT Front  Rear 
A500/518/618     Rear
A404/413/470/670     Upper
Build Note - This MoPar setup can be used on other trans. There is an in-line transmission filter that mounts along the side of the oil pan in front of the starter on 62/63 MoPars. There is no internal transmission filter in this version of the 727 Torqueflite, just a screen. The original Fram number was P1651PL, that crosses to Chrysler #2400124 and #J3168060 and GM #715102 and #5579826. A NAPA #4755 miscellaneous filter base and #1320 oil filter can be used instead with a bit of fabrication. A pair of brass elbow fittings to fit the inlet and outlet ports on the filter base will work as a substitute.