We tried the manual with an RPM built T56. They failed miserably which led me to the TH400 from a different vendor I have now. Nothing wrong with the transmission at all. It is a convertor issue. You can compute the slip at nearly 40% @ 6300. MPH doesn't rise between 6300 and 6900. I have a local guy who has been very successful and has agreed to help us get the stall right. Otherwise I am looking hard at Twist and a couple of others.
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