I was reading a post yesterday from someone who had googled a question, and discovered a several-year-old eGullet post where she had posted the same question. So it was for me as I was looking to find time/temp to sous vide corned beef, and found this post!
60 hours at 135F produced a corned beef that was moist and luscious. Easily cut with a fork. 😎
Edited to add that I did not brine the roast. It had been frozen though.