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Here’s something important to know: Since the 4L70E was designed with hot rodders in mind, it is the only SuperMatic kit that does not include a stock torque converter. The idea is to encourage matching the stall speed to the engine package; GMPP recommended a 2,500-stall for our package. We pursued the many options at Summit Racing.com since they had the best prices and fastest shipping around, and chose a 2,400-stall TCI Breakaway converter. View Related Article
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