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129 0505 Tran 11 Z

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No story about automatics is complete without some ragging about cooling, since heat will kill any juice tranny. Team Ramco offers this brazed aluminum Dana Tru-Cool unit, measuring 22.75x8.5x1.25 inches. It has a 40,000-pound GVW rating and reportedly managed to lower tranny temperature by 100 degrees (from 285 to 185) in a motorhome climbing a hill. And that vehicle used to have a factory secondary cooler.