5R55S Transmission Rebuild Cold Start Valve
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The cold-start valve is disassembled on the bench and modified to remain locked. The valve regulates transmission fluid flow from the valvebody to the trans-cooler in an attempt to bring it up to operating temperature in extreme cold weather. According to Barrett, he would rather have the fluid flowing all the time so you can pull into the burnout box with full fluid flow. View Related Article
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