[bobcowan]

It's all about stall speed on the torque converter. If you're fighting the brakes, then you didn't go high enough. Mine is rated at 3,200-3,400, and it works well. But I think I could have gone a little higher, say 3,400-3,600.

Also, remember that with a higher stall, you'll generate more heat at low speeds. Make sure your cooler is up to the task.