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I do believe if someone took a stock computer controlled 46RE that was shifting at 4500 rpm, or when it felt like it (as they seem to do) and swapped in a built 727 with a manual valve body, the results would be surprising.



If the shift rpm is all that's holding you back I wouldn't be giving all the credit to a 727 if you shifted it higher and went quicker. Why can't you shift your 46RE manually if you need higher shift points?

As for the 1 1/2 second claims by SMR....I've dealt with SMR in the past. In my (lengthy and very expensive) experience, there is certainly no lack of BS from that operation!